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[rare-dev] eBGP not always brings up

From: Maria Del Carmen Misa Moreira <>
To: "" <>
Subject: [rare-dev] eBGP not always brings up
Date: Wed, 4 Jan 2023 11:24:42 +0000
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Hi,

I have a full mesh topology RX configured with iBGP, OSPF, 3 VLANs and 3 VRFs (BGP is configured with the address of the loopbacks: 1 loopback per VLAN). Every router has a client RXX with OSPF passive, eBGP, a different AS number and 1 VRF.

(AS100) R11 ---- (AS10, AS20, AS30) R1 ---- (AS10, AS20, AS30) R4 ---- (AS400) R44

| |

(AS200) R22 ---- (AS10, AS20, AS30) R2 ---- (AS10, AS20, AS30) R3 ----(AS300) R33

The topology is working fine so I can ping each other, iBGP is up but eBGP is not completly up. I noted that R11 and R22 are always up but for R33 and R44 it depends... This is the behaviour that I'm seeing: I run the simulation and R11/R22 bring up and also R33 (not R44), then, I run again the simulation with exactly the same configuration and sometimes it happens that R44 brings up and not R33 or even worst none of them (R33, R44).

Any idea? I have no idea why only one of those (R33, R44) brings up and not the other and when you run it again it be opposite behaviour.

Cheers,

Camen Misa

[rare-dev] eBGP not always brings up, Maria Del Carmen Misa Moreira, 01/04/2023
- Re: [rare-dev] eBGP not always brings up, mc36, 01/04/2023

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[rare-dev] eBGP not always brings up