point to point connection but no routes imported.
Benoit Chesneau
benoitc at enki-multimedia.eu
Sat Feb 17 00:12:32 CET 2024
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}
];
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
—
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