Re: point to point connection but no routes imported.

17 Feb 2024

      Hi,

Just to be sure. 1.1.1.1 and 1.1.1.2 are not in the single /31.
Please also provide more details. What protocol output do you show? What
route do you want from R2 to R1. Please look at things like these:
show route all <prefix>
show route all export <proto> <prefix>
show route all protocol <proto> <prefix>

On Sat, Feb 17, 2024, 00:21 Benoit Chesneau <benoitc@enki-multimedia.eu>
wrote:
...
Hi all,
I have an issue witth the route import onbetween two machine. They are
connected to each others  by a vlan and at each end ana /31 is setup. I can
ping between  each end.
R1: VLAN330(1.1.1.1) ----> R2 : VLAN330(1.1.1.2)
R2( 1.1.1.2)  is connected to upstreams transit  and collect correctly the
routes. But when I do the following config on this rouyer (R2):
R2 is showing some  exported routes but R1 received nothing:
```
    Route change stats:     received   rejected   filtered    ignored
 accepted
      Import updates:              1          0          0          0
    1
      Import withdraws:            0          0        ---          0
    0
      Export updates:         934590         27          0        ---
 934563
      Export withdraws:           18        ---        ---        ---
   18
```
What could be the issue ?
I have the following configuratiosn:
R1:
```
define AS65001_IPV4 = [    1.1.1.184/29{29,32}
<http://1.1.1.184/29%7B29,32%7D>
];
filter ebgp_home_as65001_import {
        if (net.type = NET_IP4 && ! (net ~ AS65001_IPV4)) then reject;
        accept;
}
filter ebgp_home_as65001_export {
protocol bgp home_65001_ipv4 {
  local 1.1.1.2 as 209823;
  neighbor 1.1.1.1 as 65001;
  default bgp_med 0;
  default bgp_local_pref 400;
  ipv4 {
    import keep filtered;
    import filter ebgp_home_as65001_import;
    export all;
    next hop self on;
  };
};
```
R2:
```
router id 1.1.1.1;
log syslog all;
log "/var/log/bird.log" all;
debug protocols all;
watchdog warning 5 s;
watchdog timeout 30 s;
protocol device {
  scan time 30;
}
protocol direct {
  ipv4;
  ipv6;
  check link yes;
}
protocol kernel kernel4 {
  ipv4 { import all; export where source != RTS_DEVICE; };
  learn off;
  scan time 300;
}
protocol kernel kernel6 {
  ipv6 { import all; export where source != RTS_DEVICE; };
  learn off;
  scan time 300;
}
protocol static static4 {
  ipv4 { export all; };
  # Reject default route
 route 0.0.0.0/0 unreachable;
# main route
  route 1.1.1.184/29 blackhole;
}
filter bgp_export {
  if (net.type = NET_IP4 && ! (net ~ [ 1.1.1.184/29 ])) then reject;
accept;
}
template bgp T_GW4 {
  local 1.1.1.1 as 65001;
  default bgp_med 0;
  default bgp_local_pref 400;
  multihop;
  ipv4 { import keep filtered; import all; export filter bgp_export; next
hop self on; };
}
protocol bgp ccre1_ipv4_1 from T_GW4 { neighbor 1.1.1.2 as <PUBLIC AS >; };
```
Benoît Chesneau, Enki Multimedia
—
t. +33608655490
Sent with Proton Mail secure email.

Re: point to point connection but no routes imported.

Alexander Zubkov