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<p>Hi!</p>
<p>Thanks for the clarifications. I understand. But I'm still trying
to find a solution with ECMP on my network. And so far I can't
find an elegant solution. I want to use OSPF and "merge external
on" to form an IGP table in which the local interfaces of all
routers were equivalent on links between cities (ECMP). To do
this, I added static routes /32 with BFD checks of local
interfaces neighboring routers. Below I have given the output of
OSPF state on the router 10.10.97.72.</p>
<p>I expected to get a mixed route on router 10.10.97.72 to the
network 10.10.97.33/32 through "router 10.10.97.33" and through
"router 10.10.97.73" since this subnet (10.10.97.33/32) is in LSA5
of both of these routers and the weight (distance) and
OSPF.metric1/2 to these routers are the same. But it didn't
happen. Something went wrong?! Although the route 10.10.8.0/21
worked and is available through all 6 links.</p>
<p>Why this LSA5 wasn't merge?</p>
<p>LSA5 router 10.10.97.73 (<span style="color: #333333;">distance </span><span
style="color: #9c5d27;">2000</span>): external 10.10.97.33/32
metric2 10000 via 10.112.0.12<br>
LSA5 router 10.10.97.33 (<span style="color: #333333;">distance </span><span
style="color: #9c5d27;">2000</span>): external 10.10.97.33/32
metric2 10000</p>
<div style="color: #333333;background-color: #f5f5f5;font-family: 'Droid Sans Mono', 'monospace', monospace;font-weight: normal;font-size: 14px;line-height: 19px;white-space: pre;"><div><span style="color: #333333;">bird</span><span style="color: #777777;">></span><span style="color: #333333;"> show route </span><span style="color: #4b69c6;">for</span><span style="color: #333333;"> </span><span style="color: #9c5d27;">10.10</span><span style="color: #777777;">.</span><span style="color: #333333;">97</span><span style="color: #777777;">.</span><span style="color: #333333;">33</span><span style="color: #777777;">/</span><span style="color: #9c5d27;">32</span><span style="color: #333333;"> </span><span style="color: #aa3731;font-weight: bold;">all</span><span style="color: #333333;"> table igpcoret4</span></div><div><span style="color: #333333;">Table igpcoret4</span><span style="color: #777777;">:</span></div><div><span style="color: #9c5d27;">10.10</span><span style="color: #777777;">.</span><span style="color: #333333;">97</span><span style="color: #777777;">.</span><span style="color: #333333;">33</span><span style="color: #777777;">/</span><span style="color: #9c5d27;">32</span><span style="color: #333333;"> unicast </span><span style="color: #777777;">[</span><span style="color: #333333;">igpcore4 </span><span style="color: #9c5d27;">22</span><span style="color: #777777;">:</span><span style="color: #9c5d27;">53</span><span style="color: #777777;">:</span><span style="color: #9c5d27;">27</span><span style="color: #777777;">]</span><span style="color: #333333;"> </span><span style="color: #777777;">*</span><span style="color: #333333;"> E2 </span><span style="color: #777777;">(</span><span style="color: #9c5d27;">150</span><span style="color: #777777;">/</span><span style="color: #9c5d27;">2000</span><span style="color: #777777;">/</span><span style="color: #9c5d27;">10000</span><span style="color: #777777;">)</span><span style="color: #333333;"> </span><span style="color: #777777;">[</span><span style="color: #9c5d27;">10.10</span><span style="color: #777777;">.</span><span style="color: #333333;">97</span><span style="color: #777777;">.</span><span style="color: #333333;">33</span><span style="color: #777777;">]</span></div><div><span style="color: #333333;"> via </span><span style="color: #9c5d27;">10.112</span><span style="color: #777777;">.</span><span style="color: #333333;">0</span><span style="color: #777777;">.</span><span style="color: #333333;">1 on A2</span><span style="color: #777777;">.</span><span style="color: #333333;">1 weight </span><span style="color: #9c5d27;">10</span></div><div><span style="color: #333333;"> via </span><span style="color: #9c5d27;">10.112</span><span style="color: #777777;">.</span><span style="color: #333333;">0</span><span style="color: #777777;">.</span><span style="color: #333333;">3 on A2</span><span style="color: #777777;">.</span><span style="color: #333333;">2 weight </span><span style="color: #9c5d27;">10</span></div><div><span style="color: #333333;"> via </span><span style="color: #9c5d27;">10.112</span><span style="color: #777777;">.</span><span style="color: #333333;">0</span><span style="color: #777777;">.</span><span style="color: #333333;">5 on A3</span><span style="color: #777777;">.</span><span style="color: #333333;">1 weight </span><span style="color: #9c5d27;">10</span></div><div><span style="color: #333333;"> via </span><span style="color: #9c5d27;">10.112</span><span style="color: #777777;">.</span><span style="color: #333333;">0</span><span style="color: #777777;">.</span><span style="color: #333333;">7 on A3</span><span style="color: #777777;">.</span><span style="color: #333333;">2 weight </span><span style="color: #9c5d27;">10</span></div><div><span style="color: #333333;"> Type</span><span style="color: #777777;">:</span><span style="color: #333333;"> </span><span style="color: #9c5d27;">OSPF</span><span style="color: #777777;">-</span><span style="color: #333333;">E2 univ</span></div><div><span style="color: #333333;"> </span><span style="color: #9c5d27;">OSPF</span><span style="color: #777777;">.</span><span style="color: #333333;">metric1</span><span style="color: #777777;">:</span><span style="color: #333333;"> </span><span style="color: #9c5d27;">2000</span></div><div><span style="color: #333333;"> </span><span style="color: #9c5d27;">OSPF</span><span style="color: #777777;">.</span><span style="color: #333333;">metric2</span><span style="color: #777777;">:</span><span style="color: #333333;"> </span><span style="color: #9c5d27;">10000</span></div><div><span style="color: #333333;"> </span><span style="color: #9c5d27;">OSPF</span><span style="color: #777777;">.</span><span style="color: #333333;">tag</span><span style="color: #777777;">:</span><span style="color: #333333;"> </span><span style="color: #7a3e9d;">0x</span><span style="color: #9c5d27;">00000000</span></div><div><span style="color: #333333;"> </span><span style="color: #9c5d27;">OSPF</span><span style="color: #777777;">.</span><span style="color: #333333;">router_id</span><span style="color: #777777;">:</span><span style="color: #333333;"> </span><span style="color: #9c5d27;">10.10</span><span style="color: #777777;">.</span><span style="color: #333333;">97</span><span style="color: #777777;">.</span><span style="color: #333333;">33</span></div><div><span style="color: #333333;"> unicast </span><span style="color: #777777;">[</span><span style="color: #333333;">static4 </span><span style="color: #9c5d27;">22</span><span style="color: #777777;">:</span><span style="color: #9c5d27;">53</span><span style="color: #777777;">:</span><span style="color: #9c5d27;">12</span><span style="color: #777777;">]</span><span style="color: #333333;"> </span><span style="color: #777777;">(</span><span style="color: #9c5d27;">140</span><span style="color: #777777;">)</span></div><div><span style="color: #333333;"> via </span><span style="color: #9c5d27;">10.112</span><span style="color: #777777;">.</span><span style="color: #333333;">0</span><span style="color: #777777;">.</span><span style="color: #333333;">1 on A2</span><span style="color: #777777;">.</span><span style="color: #333333;">1 weight </span><span style="color: #9c5d27;">1</span></div><div><span style="color: #333333;"> via </span><span style="color: #9c5d27;">10.112</span><span style="color: #777777;">.</span><span style="color: #333333;">0</span><span style="color: #777777;">.</span><span style="color: #333333;">3 on A2</span><span style="color: #777777;">.</span><span style="color: #333333;">2 weight </span><span style="color: #9c5d27;">1</span></div><div><span style="color: #333333;"> via </span><span style="color: #9c5d27;">10.112</span><span style="color: #777777;">.</span><span style="color: #333333;">0</span><span style="color: #777777;">.</span><span style="color: #333333;">5 on A3</span><span style="color: #777777;">.</span><span style="color: #333333;">1 weight </span><span style="color: #9c5d27;">1</span></div><div><span style="color: #333333;"> via </span><span style="color: #9c5d27;">10.112</span><span style="color: #777777;">.</span><span style="color: #333333;">0</span><span style="color: #777777;">.</span><span style="color: #333333;">7 on A3</span><span style="color: #777777;">.</span><span style="color: #333333;">2 weight </span><span style="color: #9c5d27;">1</span></div><div><span style="color: #333333;"> Type</span><span style="color: #777777;">:</span><span style="color: #333333;"> static univ</span></div><div><span style="color: #333333;">bird</span><span style="color: #777777;">></span><span style="color: #333333;"> show route </span><span style="color: #4b69c6;">for</span><span style="color: #333333;"> </span><span style="color: #9c5d27;">10.10</span><span style="color: #777777;">.</span><span style="color: #333333;">8</span><span style="color: #777777;">.</span><span style="color: #333333;">0</span><span style="color: #777777;">/</span><span style="color: #9c5d27;">21</span><span style="color: #333333;"> </span><span style="color: #aa3731;font-weight: bold;">all</span><span style="color: #333333;"> table igpcoret4</span></div><div><span style="color: #333333;">Table igpcoret4</span><span style="color: #777777;">:</span></div><div><span style="color: #9c5d27;">10.10</span><span style="color: #777777;">.</span><span style="color: #333333;">8</span><span style="color: #777777;">.</span><span style="color: #333333;">0</span><span style="color: #777777;">/</span><span style="color: #9c5d27;">21</span><span style="color: #333333;"> unicast </span><span style="color: #777777;">[</span><span style="color: #333333;">igpcore4 </span><span style="color: #9c5d27;">22</span><span style="color: #777777;">:</span><span style="color: #9c5d27;">53</span><span style="color: #777777;">:</span><span style="color: #9c5d27;">27</span><span style="color: #777777;">]</span><span style="color: #333333;"> </span><span style="color: #777777;">*</span><span style="color: #333333;"> E2 </span><span style="color: #777777;">(</span><span style="color: #9c5d27;">150</span><span style="color: #777777;">/</span><span style="color: #9c5d27;">2000</span><span style="color: #777777;">/</span><span style="color: #9c5d27;">10000</span><span style="color: #777777;">)</span><span style="color: #333333;"> </span><span style="color: #777777;">[</span><span style="color: #9c5d27;">10.10</span><span style="color: #777777;">.</span><span style="color: #333333;">97</span><span style="color: #777777;">.</span><span style="color: #333333;">73</span><span style="color: #777777;">]</span></div><div><span style="color: #333333;"> via </span><span style="color: #9c5d27;">10.112</span><span style="color: #777777;">.</span><span style="color: #333333;">0</span><span style="color: #777777;">.</span><span style="color: #333333;">1 on A2</span><span style="color: #777777;">.</span><span style="color: #333333;">1 weight </span><span style="color: #9c5d27;">10</span></div><div><span style="color: #333333;"> via </span><span style="color: #9c5d27;">10.112</span><span style="color: #777777;">.</span><span style="color: #333333;">0</span><span style="color: #777777;">.</span><span style="color: #333333;">3 on A2</span><span style="color: #777777;">.</span><span style="color: #333333;">2 weight </span><span style="color: #9c5d27;">10</span></div><div><span style="color: #333333;"> via </span><span style="color: #9c5d27;">10.112</span><span style="color: #777777;">.</span><span style="color: #333333;">0</span><span style="color: #777777;">.</span><span style="color: #333333;">5 on A3</span><span style="color: #777777;">.</span><span style="color: #333333;">1 weight </span><span style="color: #9c5d27;">10</span></div><div><span style="color: #333333;"> via </span><span style="color: #9c5d27;">10.112</span><span style="color: #777777;">.</span><span style="color: #333333;">0</span><span style="color: #777777;">.</span><span style="color: #333333;">7 on A3</span><span style="color: #777777;">.</span><span style="color: #333333;">2 weight </span><span style="color: #9c5d27;">10</span></div><div><span style="color: #333333;"> via </span><span style="color: #9c5d27;">10.112</span><span style="color: #777777;">.</span><span style="color: #333333;">0</span><span style="color: #777777;">.</span><span style="color: #333333;">9 on A1</span><span style="color: #777777;">.</span><span style="color: #333333;">1 weight </span><span style="color: #9c5d27;">10</span></div><div><span style="color: #333333;"> via </span><span style="color: #9c5d27;">10.112</span><span style="color: #777777;">.</span><span style="color: #333333;">0</span><span style="color: #777777;">.</span><span style="color: #333333;">11 on A1</span><span style="color: #777777;">.</span><span style="color: #333333;">2 weight </span><span style="color: #9c5d27;">10</span></div><div><span style="color: #333333;"> Type</span><span style="color: #777777;">:</span><span style="color: #333333;"> </span><span style="color: #9c5d27;">OSPF</span><span style="color: #777777;">-</span><span style="color: #333333;">E2 univ</span></div><div><span style="color: #333333;"> </span><span style="color: #9c5d27;">OSPF</span><span style="color: #777777;">.</span><span style="color: #333333;">metric1</span><span style="color: #777777;">:</span><span style="color: #333333;"> </span><span style="color: #9c5d27;">2000</span></div><div><span style="color: #333333;"> </span><span style="color: #9c5d27;">OSPF</span><span style="color: #777777;">.</span><span style="color: #333333;">metric2</span><span style="color: #777777;">:</span><span style="color: #333333;"> </span><span style="color: #9c5d27;">10000</span></div><div><span style="color: #333333;"> </span><span style="color: #9c5d27;">OSPF</span><span style="color: #777777;">.</span><span style="color: #333333;">tag</span><span style="color: #777777;">:</span><span style="color: #333333;"> </span><span style="color: #7a3e9d;">0x</span><span style="color: #9c5d27;">00000000</span></div><div><span style="color: #333333;"> </span><span style="color: #9c5d27;">OSPF</span><span style="color: #777777;">.</span><span style="color: #333333;">router_id</span><span style="color: #777777;">:</span><span style="color: #333333;"> </span><span style="color: #9c5d27;">10.10</span><span style="color: #777777;">.</span><span style="color: #333333;">97</span><span style="color: #777777;">.</span><span style="color: #333333;">73</span></div>
</div>
<div style="color: #333333;background-color: #f5f5f5;font-family: 'Droid Sans Mono', 'monospace', monospace;font-weight: normal;font-size: 14px;line-height: 19px;white-space: pre;"><div><span style="color: #7a3e9d;">bird</span><span style="color: #777777;">></span><span style="color: #7a3e9d;"> show</span><span style="color: #333333;"> ospf state igpcore4</span></div>
<div><span style="color: #333333;">area </span><span style="color: #9c5d27;">0.0.0.0</span></div>
<div><span style="color: #333333;"> router </span><span style="color: #9c5d27;">10.10.97.33</span></div><div><span style="color: #333333;"> distance </span><span style="color: #9c5d27;">2000</span></div><div><span style="color: #333333;"> router </span><span style="color: #9c5d27;">10.10.97.72</span><span style="color: #333333;"> metric </span><span style="color: #9c5d27;">2000</span></div><div><span style="color: #333333;"> router </span><span style="color: #9c5d27;">10.10.97.72</span><span style="color: #333333;"> metric </span><span style="color: #9c5d27;">2000</span></div><div><span style="color: #333333;"> router </span><span style="color: #9c5d27;">10.10.97.72</span><span style="color: #333333;"> metric </span><span style="color: #9c5d27;">2000</span></div><div><span style="color: #333333;"> router </span><span style="color: #9c5d27;">10.10.97.72</span><span style="color: #333333;"> metric </span><span style="color: #9c5d27;">2000</span></div><div><span style="color: #333333;"> router </span><span style="color: #9c5d27;">10.10.97.73</span><span style="color: #333333;"> metric </span><span style="color: #9c5d27;">10</span></div><div><span style="color: #333333;"> router </span><span style="color: #9c5d27;">10.10.97.67</span><span style="color: #333333;"> metric </span><span style="color: #9c5d27;">300</span></div><div><span style="color: #333333;"> router </span><span style="color: #9c5d27;">10.10.97.66</span><span style="color: #333333;"> metric </span><span style="color: #9c5d27;">300</span></div><div><span style="color: #333333;"> router </span><span style="color: #9c5d27;">10.10.97.68</span><span style="color: #333333;"> metric </span><span style="color: #9c5d27;">65535</span></div><div><span style="color: #333333;"> stubnet </span><span style="color: #9c5d27;">10.112.0.0</span><span style="color: #333333;">/</span><span style="color: #9c5d27;">31</span><span style="color: #333333;"> metric </span><span style="color: #9c5d27;">2000</span></div><div><span style="color: #333333;"> stubnet </span><span style="color: #9c5d27;">10.112.0.2</span><span style="color: #333333;">/</span><span style="color: #9c5d27;">31</span><span style="color: #333333;"> metric </span><span style="color: #9c5d27;">2000</span></div><div><span style="color: #333333;"> stubnet </span><span style="color: #9c5d27;">10.112.0.4</span><span style="color: #333333;">/</span><span style="color: #9c5d27;">31</span><span style="color: #333333;"> metric </span><span style="color: #9c5d27;">2000</span></div><div><span style="color: #333333;"> stubnet </span><span style="color: #9c5d27;">10.112.0.6</span><span style="color: #333333;">/</span><span style="color: #9c5d27;">31</span><span style="color: #333333;"> metric </span><span style="color: #9c5d27;">2000</span></div><div><span style="color: #333333;"> stubnet </span><span style="color: #9c5d27;">10.112.0.12</span><span style="color: #333333;">/</span><span style="color: #9c5d27;">31</span><span style="color: #333333;"> metric </span><span style="color: #9c5d27;">10</span></div><div><span style="color: #333333;"> stubnet </span><span style="color: #9c5d27;">10.112.0.14</span><span style="color: #333333;">/</span><span style="color: #9c5d27;">31</span><span style="color: #333333;"> metric </span><span style="color: #9c5d27;">300</span></div><div><span style="color: #333333;"> stubnet </span><span style="color: #9c5d27;">10.112.0.18</span><span style="color: #333333;">/</span><span style="color: #9c5d27;">31</span><span style="color: #333333;"> metric </span><span style="color: #9c5d27;">300</span></div><div><span style="color: #333333;"> stubnet </span><span style="color: #9c5d27;">10.112.0.22</span><span style="color: #333333;">/</span><span style="color: #9c5d27;">31</span><span style="color: #333333;"> metric </span><span style="color: #9c5d27;">65535</span></div><div><span style="color: #333333;"> external </span><span style="color: #9c5d27;">0.0.0.0</span><span style="color: #333333;">/</span><span style="color: #9c5d27;">0</span><span style="color: #333333;"> metric2 </span><span style="color: #9c5d27;">10000</span></div><div><span style="color: #333333;"> external </span><span style="color: #9c5d27;">10.112.0.0</span><span style="color: #333333;">/</span><span style="color: #9c5d27;">31</span><span style="color: #333333;"> metric2 </span><span style="color: #9c5d27;">10000</span></div><div><span style="color: #333333;"> external </span><span style="color: #9c5d27;">10.112.0.2</span><span style="color: #333333;">/</span><span style="color: #9c5d27;">31</span><span style="color: #333333;"> metric2 </span><span style="color: #9c5d27;">10000</span></div><div><span style="color: #333333;"> external </span><span style="color: #9c5d27;">10.112.0.4</span><span style="color: #333333;">/</span><span style="color: #9c5d27;">31</span><span style="color: #333333;"> metric2 </span><span style="color: #9c5d27;">10000</span></div><div><span style="color: #333333;"> external </span><span style="color: #9c5d27;">10.112.0.6</span><span style="color: #333333;">/</span><span style="color: #9c5d27;">31</span><span style="color: #333333;"> metric2 </span><span style="color: #9c5d27;">10000</span></div><div><span style="color: #333333;"> external </span><span style="color: #9c5d27;">10.112.0.12</span><span style="color: #333333;">/</span><span style="color: #9c5d27;">31</span><span style="color: #333333;"> metric2 </span><span style="color: #9c5d27;">10000</span></div><div><span style="color: #333333;"> external </span><span style="color: #9c5d27;">10.112.0.14</span><span style="color: #333333;">/</span><span style="color: #9c5d27;">31</span><span style="color: #333333;"> metric2 </span><span style="color: #9c5d27;">10000</span></div><div><span style="color: #333333;"> external </span><span style="color: #9c5d27;">10.112.0.18</span><span style="color: #333333;">/</span><span style="color: #9c5d27;">31</span><span style="color: #333333;"> metric2 </span><span style="color: #9c5d27;">10000</span></div><div><span style="color: #333333;"> external </span><span style="color: #9c5d27;">10.112.0.22</span><span style="color: #333333;">/</span><span style="color: #9c5d27;">31</span><span style="color: #333333;"> metric2 </span><span style="color: #9c5d27;">10000</span></div><div><span style="color: #333333;"> external </span><span style="color: #9c5d27;">87.245.238.204</span><span style="color: #333333;">/</span><span style="color: #9c5d27;">31</span><span style="color: #333333;"> metric2 </span><span style="color: #9c5d27;">10000</span></div><div><span style="color: #333333;"> external </span><span style="color: #9c5d27;">10.10.8.0</span><span style="color: #333333;">/</span><span style="color: #9c5d27;">21</span><span style="color: #333333;"> metric2 </span><span style="color: #9c5d27;">10000</span></div><div><span style="color: #333333;"> external </span><span style="color: #9c5d27;">10.10.97.33</span><span style="color: #333333;">/</span><span style="color: #9c5d27;">32</span><span style="color: #333333;"> metric2 </span><span style="color: #9c5d27;">10000</span></div><div><span style="color: #333333;"> external </span><span style="color: #9c5d27;">10.10.97.66</span><span style="color: #333333;">/</span><span style="color: #9c5d27;">32</span><span style="color: #333333;"> metric2 </span><span style="color: #9c5d27;">10000</span><span style="color: #333333;"> via </span><span style="color: #9c5d27;">10.112.0.19</span></div><div><span style="color: #333333;"> external </span><span style="color: #9c5d27;">10.10.97.67</span><span style="color: #333333;">/</span><span style="color: #9c5d27;">32</span><span style="color: #333333;"> metric2 </span><span style="color: #9c5d27;">10000</span><span style="color: #333333;"> via </span><span style="color: #9c5d27;">10.112.0.15</span></div><div><span style="color: #333333;"> external </span><span style="color: #9c5d27;">10.10.97.72</span><span style="color: #333333;">/</span><span style="color: #9c5d27;">32</span><span style="color: #333333;"> metric2 </span><span style="color: #9c5d27;">10000</span><span style="color: #333333;"> via </span><span style="color: #9c5d27;">10.112.0.0</span></div><div><span style="color: #333333;"> external </span><span style="color: #9c5d27;">10.10.97.73</span><span style="color: #333333;">/</span><span style="color: #9c5d27;">32</span><span style="color: #333333;"> metric2 </span><span style="color: #9c5d27;">10000</span><span style="color: #333333;"> via </span><span style="color: #9c5d27;">10.112.0.13</span></div>
<div><span style="color: #333333;"> router </span><span style="color: #9c5d27;">10.10.97.66</span></div><div><span style="color: #333333;"> distance </span><span style="color: #9c5d27;">2300</span></div><div><span style="color: #333333;"> router </span><span style="color: #9c5d27;">10.10.97.73</span><span style="color: #333333;"> metric </span><span style="color: #9c5d27;">300</span></div><div><span style="color: #333333;"> router </span><span style="color: #9c5d27;">10.10.97.33</span><span style="color: #333333;"> metric </span><span style="color: #9c5d27;">300</span></div><div><span style="color: #333333;"> router </span><span style="color: #9c5d27;">10.10.97.69</span><span style="color: #333333;"> metric </span><span style="color: #9c5d27;">65535</span></div><div><span style="color: #333333;"> router </span><span style="color: #9c5d27;">10.10.97.67</span><span style="color: #333333;"> metric </span><span style="color: #9c5d27;">10</span></div><div><span style="color: #333333;"> stubnet </span><span style="color: #9c5d27;">10.112.0.16</span><span style="color: #333333;">/</span><span style="color: #9c5d27;">31</span><span style="color: #333333;"> metric </span><span style="color: #9c5d27;">300</span></div><div><span style="color: #333333;"> stubnet </span><span style="color: #9c5d27;">10.112.0.18</span><span style="color: #333333;">/</span><span style="color: #9c5d27;">31</span><span style="color: #333333;"> metric </span><span style="color: #9c5d27;">300</span></div><div><span style="color: #333333;"> stubnet </span><span style="color: #9c5d27;">10.112.0.24</span><span style="color: #333333;">/</span><span style="color: #9c5d27;">31</span><span style="color: #333333;"> metric </span><span style="color: #9c5d27;">65535</span></div><div><span style="color: #333333;"> stubnet </span><span style="color: #9c5d27;">10.112.0.28</span><span style="color: #333333;">/</span><span style="color: #9c5d27;">31</span><span style="color: #333333;"> metric </span><span style="color: #9c5d27;">10</span></div><div><span style="color: #333333;"> external </span><span style="color: #9c5d27;">10.112.0.16</span><span style="color: #333333;">/</span><span style="color: #9c5d27;">31</span><span style="color: #333333;"> metric2 </span><span style="color: #9c5d27;">10000</span></div><div><span style="color: #333333;"> external </span><span style="color: #9c5d27;">10.112.0.18</span><span style="color: #333333;">/</span><span style="color: #9c5d27;">31</span><span style="color: #333333;"> metric2 </span><span style="color: #9c5d27;">10000</span></div><div><span style="color: #333333;"> external </span><span style="color: #9c5d27;">10.112.0.24</span><span style="color: #333333;">/</span><span style="color: #9c5d27;">31</span><span style="color: #333333;"> metric2 </span><span style="color: #9c5d27;">10000</span></div><div><span style="color: #333333;"> external </span><span style="color: #9c5d27;">10.112.0.28</span><span style="color: #333333;">/</span><span style="color: #9c5d27;">31</span><span style="color: #333333;"> metric2 </span><span style="color: #9c5d27;">10000</span></div><div><span style="color: #333333;"> external </span><span style="color: #9c5d27;">10.10.0.0</span><span style="color: #333333;">/</span><span style="color: #9c5d27;">21</span><span style="color: #333333;"> metric2 </span><span style="color: #9c5d27;">10000</span></div><div><span style="color: #333333;"> external </span><span style="color: #9c5d27;">10.10.97.33</span><span style="color: #333333;">/</span><span style="color: #9c5d27;">32</span><span style="color: #333333;"> metric2 </span><span style="color: #9c5d27;">10000</span><span style="color: #333333;"> via </span><span style="color: #9c5d27;">10.112.0.18</span></div><div><span style="color: #333333;"> external </span><span style="color: #9c5d27;">10.10.97.66</span><span style="color: #333333;">/</span><span style="color: #9c5d27;">32</span><span style="color: #333333;"> metric2 </span><span style="color: #9c5d27;">10000</span></div><div><span style="color: #333333;"> external </span><span style="color: #9c5d27;">10.10.97.67</span><span style="color: #333333;">/</span><span style="color: #9c5d27;">32</span><span style="color: #333333;"> metric2 </span><span style="color: #9c5d27;">10000</span><span style="color: #333333;"> via </span><span style="color: #9c5d27;">10.112.0.29</span></div><div><span style="color: #333333;"> external </span><span style="color: #9c5d27;">10.10.97.73</span><span style="color: #333333;">/</span><span style="color: #9c5d27;">32</span><span style="color: #333333;"> metric2 </span><span style="color: #9c5d27;">10000</span><span style="color: #333333;"> via </span><span style="color: #9c5d27;">10.112.0.16</span></div>
<div><span style="color: #333333;"> router </span><span style="color: #9c5d27;">10.10.97.67</span></div><div><span style="color: #333333;"> distance </span><span style="color: #9c5d27;">2300</span></div><div><span style="color: #333333;"> router </span><span style="color: #9c5d27;">10.10.97.33</span><span style="color: #333333;"> metric </span><span style="color: #9c5d27;">300</span></div><div><span style="color: #333333;"> router </span><span style="color: #9c5d27;">10.10.97.66</span><span style="color: #333333;"> metric </span><span style="color: #9c5d27;">10</span></div><div><span style="color: #333333;"> router </span><span style="color: #9c5d27;">10.10.97.69</span><span style="color: #333333;"> metric </span><span style="color: #9c5d27;">65535</span></div><div><span style="color: #333333;"> stubnet </span><span style="color: #9c5d27;">10.112.0.14</span><span style="color: #333333;">/</span><span style="color: #9c5d27;">31</span><span style="color: #333333;"> metric </span><span style="color: #9c5d27;">300</span></div><div><span style="color: #333333;"> stubnet </span><span style="color: #9c5d27;">10.112.0.28</span><span style="color: #333333;">/</span><span style="color: #9c5d27;">31</span><span style="color: #333333;"> metric </span><span style="color: #9c5d27;">10</span></div><div><span style="color: #333333;"> stubnet </span><span style="color: #9c5d27;">10.112.0.26</span><span style="color: #333333;">/</span><span style="color: #9c5d27;">31</span><span style="color: #333333;"> metric </span><span style="color: #9c5d27;">65535</span></div><div><span style="color: #333333;"> external </span><span style="color: #9c5d27;">10.112.0.14</span><span style="color: #333333;">/</span><span style="color: #9c5d27;">31</span><span style="color: #333333;"> metric2 </span><span style="color: #9c5d27;">10000</span></div><div><span style="color: #333333;"> external </span><span style="color: #9c5d27;">10.112.0.26</span><span style="color: #333333;">/</span><span style="color: #9c5d27;">31</span><span style="color: #333333;"> metric2 </span><span style="color: #9c5d27;">10000</span></div><div><span style="color: #333333;"> external </span><span style="color: #9c5d27;">10.112.0.28</span><span style="color: #333333;">/</span><span style="color: #9c5d27;">31</span><span style="color: #333333;"> metric2 </span><span style="color: #9c5d27;">10000</span></div><div><span style="color: #333333;"> external </span><span style="color: #9c5d27;">10.10.0.0</span><span style="color: #333333;">/</span><span style="color: #9c5d27;">21</span><span style="color: #333333;"> metric2 </span><span style="color: #9c5d27;">10000</span></div><div><span style="color: #333333;"> external </span><span style="color: #9c5d27;">10.10.97.33</span><span style="color: #333333;">/</span><span style="color: #9c5d27;">32</span><span style="color: #333333;"> metric2 </span><span style="color: #9c5d27;">10000</span><span style="color: #333333;"> via </span><span style="color: #9c5d27;">10.112.0.14</span></div><div><span style="color: #333333;"> external </span><span style="color: #9c5d27;">10.10.97.66</span><span style="color: #333333;">/</span><span style="color: #9c5d27;">32</span><span style="color: #333333;"> metric2 </span><span style="color: #9c5d27;">10000</span><span style="color: #333333;"> via </span><span style="color: #9c5d27;">10.112.0.28</span></div><div><span style="color: #333333;"> external </span><span style="color: #9c5d27;">10.10.97.67</span><span style="color: #333333;">/</span><span style="color: #9c5d27;">32</span><span style="color: #333333;"> metric2 </span><span style="color: #9c5d27;">10000</span></div>
<div><span style="color: #333333;"> router </span><span style="color: #9c5d27;">10.10.97.68</span></div><div><span style="color: #333333;"> distance </span><span style="color: #9c5d27;">67535</span></div><div><span style="color: #333333;"> router </span><span style="color: #9c5d27;">10.10.97.73</span><span style="color: #333333;"> metric </span><span style="color: #9c5d27;">65535</span></div><div><span style="color: #333333;"> router </span><span style="color: #9c5d27;">10.10.97.33</span><span style="color: #333333;"> metric </span><span style="color: #9c5d27;">65535</span></div><div><span style="color: #333333;"> stubnet </span><span style="color: #9c5d27;">10.112.0.20</span><span style="color: #333333;">/</span><span style="color: #9c5d27;">31</span><span style="color: #333333;"> metric </span><span style="color: #9c5d27;">65535</span></div><div><span style="color: #333333;"> stubnet </span><span style="color: #9c5d27;">10.112.0.22</span><span style="color: #333333;">/</span><span style="color: #9c5d27;">31</span><span style="color: #333333;"> metric </span><span style="color: #9c5d27;">65535</span></div><div><span style="color: #333333;"> external </span><span style="color: #9c5d27;">10.112.0.20</span><span style="color: #333333;">/</span><span style="color: #9c5d27;">31</span><span style="color: #333333;"> metric2 </span><span style="color: #9c5d27;">10000</span></div><div><span style="color: #333333;"> external </span><span style="color: #9c5d27;">10.112.0.22</span><span style="color: #333333;">/</span><span style="color: #9c5d27;">31</span><span style="color: #333333;"> metric2 </span><span style="color: #9c5d27;">10000</span></div><div><span style="color: #333333;"> external </span><span style="color: #9c5d27;">10.10.97.68</span><span style="color: #333333;">/</span><span style="color: #9c5d27;">32</span><span style="color: #333333;"> metric2 </span><span style="color: #9c5d27;">10000</span></div>
<div><span style="color: #333333;"> router </span><span style="color: #9c5d27;">10.10.97.69</span></div><div><span style="color: #333333;"> distance </span><span style="color: #9c5d27;">67835</span></div><div><span style="color: #333333;"> router </span><span style="color: #9c5d27;">10.10.97.66</span><span style="color: #333333;"> metric </span><span style="color: #9c5d27;">65535</span></div><div><span style="color: #333333;"> router </span><span style="color: #9c5d27;">10.10.97.67</span><span style="color: #333333;"> metric </span><span style="color: #9c5d27;">65535</span></div><div><span style="color: #333333;"> stubnet </span><span style="color: #9c5d27;">10.112.0.24</span><span style="color: #333333;">/</span><span style="color: #9c5d27;">31</span><span style="color: #333333;"> metric </span><span style="color: #9c5d27;">65535</span></div><div><span style="color: #333333;"> stubnet </span><span style="color: #9c5d27;">10.112.0.26</span><span style="color: #333333;">/</span><span style="color: #9c5d27;">31</span><span style="color: #333333;"> metric </span><span style="color: #9c5d27;">65535</span></div><div><span style="color: #333333;"> external </span><span style="color: #9c5d27;">10.112.0.24</span><span style="color: #333333;">/</span><span style="color: #9c5d27;">31</span><span style="color: #333333;"> metric2 </span><span style="color: #9c5d27;">10000</span></div><div><span style="color: #333333;"> external </span><span style="color: #9c5d27;">10.112.0.26</span><span style="color: #333333;">/</span><span style="color: #9c5d27;">31</span><span style="color: #333333;"> metric2 </span><span style="color: #9c5d27;">10000</span></div><div><span style="color: #333333;"> external </span><span style="color: #9c5d27;">10.10.97.69</span><span style="color: #333333;">/</span><span style="color: #9c5d27;">32</span><span style="color: #333333;"> metric2 </span><span style="color: #9c5d27;">10000</span></div>
<div><span style="color: #333333;"> router </span><span style="color: #9c5d27;">10.10.97.72</span></div><div><span style="color: #333333;"> distance </span><span style="color: #9c5d27;">0</span></div><div><span style="color: #333333;"> router </span><span style="color: #9c5d27;">10.10.97.33</span><span style="color: #333333;"> metric </span><span style="color: #9c5d27;">2000</span></div><div><span style="color: #333333;"> router </span><span style="color: #9c5d27;">10.10.97.33</span><span style="color: #333333;"> metric </span><span style="color: #9c5d27;">2000</span></div><div><span style="color: #333333;"> router </span><span style="color: #9c5d27;">10.10.97.33</span><span style="color: #333333;"> metric </span><span style="color: #9c5d27;">2000</span></div><div><span style="color: #333333;"> router </span><span style="color: #9c5d27;">10.10.97.33</span><span style="color: #333333;"> metric </span><span style="color: #9c5d27;">2000</span></div><div><span style="color: #333333;"> router </span><span style="color: #9c5d27;">10.10.97.73</span><span style="color: #333333;"> metric </span><span style="color: #9c5d27;">2000</span></div><div><span style="color: #333333;"> router </span><span style="color: #9c5d27;">10.10.97.73</span><span style="color: #333333;"> metric </span><span style="color: #9c5d27;">2000</span></div><div><span style="color: #333333;"> stubnet </span><span style="color: #9c5d27;">10.112.0.0</span><span style="color: #333333;">/</span><span style="color: #9c5d27;">31</span><span style="color: #333333;"> metric </span><span style="color: #9c5d27;">2000</span></div><div><span style="color: #333333;"> stubnet </span><span style="color: #9c5d27;">10.112.0.2</span><span style="color: #333333;">/</span><span style="color: #9c5d27;">31</span><span style="color: #333333;"> metric </span><span style="color: #9c5d27;">2000</span></div><div><span style="color: #333333;"> stubnet </span><span style="color: #9c5d27;">10.112.0.4</span><span style="color: #333333;">/</span><span style="color: #9c5d27;">31</span><span style="color: #333333;"> metric </span><span style="color: #9c5d27;">2000</span></div><div><span style="color: #333333;"> stubnet </span><span style="color: #9c5d27;">10.112.0.6</span><span style="color: #333333;">/</span><span style="color: #9c5d27;">31</span><span style="color: #333333;"> metric </span><span style="color: #9c5d27;">2000</span></div><div><span style="color: #333333;"> stubnet </span><span style="color: #9c5d27;">10.112.0.8</span><span style="color: #333333;">/</span><span style="color: #9c5d27;">31</span><span style="color: #333333;"> metric </span><span style="color: #9c5d27;">2000</span></div><div><span style="color: #333333;"> stubnet </span><span style="color: #9c5d27;">10.112.0.10</span><span style="color: #333333;">/</span><span style="color: #9c5d27;">31</span><span style="color: #333333;"> metric </span><span style="color: #9c5d27;">2000</span></div><div><span style="color: #333333;"> external </span><span style="color: #9c5d27;">10.112.0.0</span><span style="color: #333333;">/</span><span style="color: #9c5d27;">31</span><span style="color: #333333;"> metric2 </span><span style="color: #9c5d27;">10000</span></div><div><span style="color: #333333;"> external </span><span style="color: #9c5d27;">10.112.0.2</span><span style="color: #333333;">/</span><span style="color: #9c5d27;">31</span><span style="color: #333333;"> metric2 </span><span style="color: #9c5d27;">10000</span></div><div><span style="color: #333333;"> external </span><span style="color: #9c5d27;">10.112.0.4</span><span style="color: #333333;">/</span><span style="color: #9c5d27;">31</span><span style="color: #333333;"> metric2 </span><span style="color: #9c5d27;">10000</span></div><div><span style="color: #333333;"> external </span><span style="color: #9c5d27;">10.112.0.6</span><span style="color: #333333;">/</span><span style="color: #9c5d27;">31</span><span style="color: #333333;"> metric2 </span><span style="color: #9c5d27;">10000</span></div><div><span style="color: #333333;"> external </span><span style="color: #9c5d27;">10.112.0.8</span><span style="color: #333333;">/</span><span style="color: #9c5d27;">31</span><span style="color: #333333;"> metric2 </span><span style="color: #9c5d27;">10000</span></div><div><span style="color: #333333;"> external </span><span style="color: #9c5d27;">10.112.0.10</span><span style="color: #333333;">/</span><span style="color: #9c5d27;">31</span><span style="color: #333333;"> metric2 </span><span style="color: #9c5d27;">10000</span></div><div><span style="color: #333333;"> external </span><span style="color: #9c5d27;">10.10.97.72</span><span style="color: #333333;">/</span><span style="color: #9c5d27;">32</span><span style="color: #333333;"> metric2 </span><span style="color: #9c5d27;">10000</span></div><div><span style="color: #333333;"> external </span><span style="color: #9c5d27;">100.105.99.0</span><span style="color: #333333;">/</span><span style="color: #9c5d27;">30</span><span style="color: #333333;"> metric2 </span><span style="color: #9c5d27;">10000</span></div>
<div><span style="color: #333333;"> router </span><span style="color: #9c5d27;">10.10.97.73</span></div><div><span style="color: #333333;"> distance </span><span style="color: #9c5d27;">2000</span></div><div><span style="color: #333333;"> router </span><span style="color: #9c5d27;">10.10.97.72</span><span style="color: #333333;"> metric </span><span style="color: #9c5d27;">2000</span></div><div><span style="color: #333333;"> router </span><span style="color: #9c5d27;">10.10.97.72</span><span style="color: #333333;"> metric </span><span style="color: #9c5d27;">2000</span></div><div><span style="color: #333333;"> router </span><span style="color: #9c5d27;">10.10.97.33</span><span style="color: #333333;"> metric </span><span style="color: #9c5d27;">10</span></div><div><span style="color: #333333;"> router </span><span style="color: #9c5d27;">10.10.97.66</span><span style="color: #333333;"> metric </span><span style="color: #9c5d27;">300</span></div><div><span style="color: #333333;"> router </span><span style="color: #9c5d27;">10.10.97.68</span><span style="color: #333333;"> metric </span><span style="color: #9c5d27;">65535</span></div><div><span style="color: #333333;"> stubnet </span><span style="color: #9c5d27;">10.112.0.8</span><span style="color: #333333;">/</span><span style="color: #9c5d27;">31</span><span style="color: #333333;"> metric </span><span style="color: #9c5d27;">2000</span></div><div><span style="color: #333333;"> stubnet </span><span style="color: #9c5d27;">10.112.0.10</span><span style="color: #333333;">/</span><span style="color: #9c5d27;">31</span><span style="color: #333333;"> metric </span><span style="color: #9c5d27;">2000</span></div><div><span style="color: #333333;"> stubnet </span><span style="color: #9c5d27;">10.112.0.12</span><span style="color: #333333;">/</span><span style="color: #9c5d27;">31</span><span style="color: #333333;"> metric </span><span style="color: #9c5d27;">10</span></div><div><span style="color: #333333;"> stubnet </span><span style="color: #9c5d27;">10.112.0.16</span><span style="color: #333333;">/</span><span style="color: #9c5d27;">31</span><span style="color: #333333;"> metric </span><span style="color: #9c5d27;">300</span></div><div><span style="color: #333333;"> stubnet </span><span style="color: #9c5d27;">10.112.0.20</span><span style="color: #333333;">/</span><span style="color: #9c5d27;">31</span><span style="color: #333333;"> metric </span><span style="color: #9c5d27;">65535</span></div><div><span style="color: #333333;"> external </span><span style="color: #9c5d27;">0.0.0.0</span><span style="color: #333333;">/</span><span style="color: #9c5d27;">0</span><span style="color: #333333;"> metric2 </span><span style="color: #9c5d27;">10000</span></div><div><span style="color: #333333;"> external </span><span style="color: #9c5d27;">10.112.0.8</span><span style="color: #333333;">/</span><span style="color: #9c5d27;">31</span><span style="color: #333333;"> metric2 </span><span style="color: #9c5d27;">10000</span></div><div><span style="color: #333333;"> external </span><span style="color: #9c5d27;">10.112.0.10</span><span style="color: #333333;">/</span><span style="color: #9c5d27;">31</span><span style="color: #333333;"> metric2 </span><span style="color: #9c5d27;">10000</span></div><div><span style="color: #333333;"> external </span><span style="color: #9c5d27;">10.112.0.12</span><span style="color: #333333;">/</span><span style="color: #9c5d27;">31</span><span style="color: #333333;"> metric2 </span><span style="color: #9c5d27;">10000</span></div><div><span style="color: #333333;"> external </span><span style="color: #9c5d27;">10.112.0.16</span><span style="color: #333333;">/</span><span style="color: #9c5d27;">31</span><span style="color: #333333;"> metric2 </span><span style="color: #9c5d27;">10000</span></div><div><span style="color: #333333;"> external </span><span style="color: #9c5d27;">10.112.0.20</span><span style="color: #333333;">/</span><span style="color: #9c5d27;">31</span><span style="color: #333333;"> metric2 </span><span style="color: #9c5d27;">10000</span></div><div><span style="color: #333333;"> external </span><span style="color: #9c5d27;">10.10.8.0</span><span style="color: #333333;">/</span><span style="color: #9c5d27;">21</span><span style="color: #333333;"> metric2 </span><span style="color: #9c5d27;">10000</span></div><div><span style="color: #333333;"> external </span><span style="color: #9c5d27;">10.10.97.33</span><span style="color: #333333;">/</span><span style="color: #9c5d27;">32</span><span style="color: #333333;"> metric2 </span><span style="color: #9c5d27;">10000</span><span style="color: #333333;"> via </span><span style="color: #9c5d27;">10.112.0.12</span></div><div><span style="color: #333333;"> external </span><span style="color: #9c5d27;">10.10.97.66</span><span style="color: #333333;">/</span><span style="color: #9c5d27;">32</span><span style="color: #333333;"> metric2 </span><span style="color: #9c5d27;">10000</span><span style="color: #333333;"> via </span><span style="color: #9c5d27;">10.112.0.17</span></div><div><span style="color: #333333;"> external </span><span style="color: #9c5d27;">10.10.97.72</span><span style="color: #333333;">/</span><span style="color: #9c5d27;">32</span><span style="color: #333333;"> metric2 </span><span style="color: #9c5d27;">10000</span><span style="color: #333333;"> via </span><span style="color: #9c5d27;">10.112.0.8</span></div><div><span style="color: #333333;"> external </span><span style="color: #9c5d27;">10.10.97.73</span><span style="color: #333333;">/</span><span style="color: #9c5d27;">32</span><span style="color: #333333;"> metric2 </span><span style="color: #9c5d27;">10000</span></div><div><span style="color: #333333;"> external </span><span style="color: #9c5d27;">188.170.160.52</span><span style="color: #333333;">/</span><span style="color: #9c5d27;">30</span><span style="color: #333333;"> metric2 </span><span style="color: #9c5d27;">10000</span></div>
</div>
<div class="moz-cite-prefix">On 26.06.2022 00:02, Ondrej Zajicek
wrote:<br>
</div>
<blockquote type="cite" cite="mid:Yrd36unrwiAShT2d@finarfin">
<pre class="moz-quote-pre" wrap="">On Sat, Jun 25, 2022 at 10:00:14PM +0300, Mikhail Mayorov wrote:
</pre>
<blockquote type="cite">
<pre class="moz-quote-pre" wrap="">Hello!
I would like use ECMP for 0.0.0.0/0. This route announced on 10.10.97.33,
10.10.97.72, 10.10.97.73 as LSA5. Below I have given the output of the
command on the router 10.10.97.67.
I expected to see a default route through 2 interfaces C3 to D1, but next
hops not merge.
Maybe I misunderstand the work "merge external on". I expected that the bird
would combine routes from different routers for the same destination
although OSPF.metric1 or OSPF.metric2.
</pre>
</blockquote>
<pre class="moz-quote-pre" wrap="">
Hello
Option "merge external" causes BIRD to combine external routes from
different routers, but only those that have the same metric (ECMP =
equal cost multipath).
In your example 0.0.0.0/0 from 10.10.97.33 has metric1 300 / metric2 10000,
while 0.0.0.0/0 from 10.10.97.73 has metric1 310 / metric2 10000.
Therefore, the only the first is used, which has only one next hop
(like the route to 10.10.97.33/32).
</pre>
</blockquote>
<div class="moz-signature">-- <br>
<div class="moz-signature">
<pre>Regards,
Mikhail V. Majorov
</pre>
</div>
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