EVPN Type-2 NLRI with unsupported IP address length 3

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  • Updated 1 year ago
I try to test EVPN connection to Brocade VDX, but when I activate the EVPN AFI, The BGP keep flapping.

I check /var/log/quagga/quagga.log, this message keep repeating.

2017/04/26 09:45:08.467743 BGP: %NOTIFICATION: sent to neighbor 10.10.10.1 3/9 (UPDATE Message Error/Optional Attribute Error) 0 bytes
2017/04/26 09:45:08.467793 BGP: %ADJCHANGE: neighbor 10.10.10.1(Unknown) in vrf Default Down BGP Notification send
2017/04/26 09:45:10.498732 BGP: %ADJCHANGE: neighbor 10.10.10.1(Unknown) in vrf Default Up
2017/04/26 09:45:10.540654 BGP: 0:10.10.10.1 - Rx EVPN Type-2 NLRI with unsupported IP address length 32
2017/04/26 09:45:10.540675 BGP: 0:10.10.10.1 - Error in processing EVPN type-2 NLRI size 37
2017/04/26 09:45:10.540683 BGP: 10.10.10.1 [Error] Error parsing NLRI

Could anybody ever see this? or what I could possibly need to check.

Thanks,
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chairul manalu

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Posted 1 year ago

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Rama Darbha, Employee

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Chairul,

Can you gather a packet capture of the NLRI exchange?

As of CL 3.3, we only support NLRI Type-2 messages for MAC address exchange. IP address exchange is projected for CL 3.4. I believe this may be your issue as I see the log message:
2017/04/26 09:45:10.540654 BGP: 0:10.10.10.1 - Rx EVPN Type-2 NLRI with unsupported IP address length 32
https://docs.cumulusnetworks.com/display/DOCS/Ethernet+Virtual+Private+Network+-+EVPN
Specifically:
  • Exchange of MACs learned on local bridge ports using the EVPN type-2 (MAC/IP Advertisement) route.
  • Type 2 route: [type]:[ESI]:[ET]:[MAC length]:[MAC]
  • Type 2 route with ARP suppression: [type]:[ESI]:[ET]:[MAC length]:[MAC]:[IP length]:[IP]
    • The Ethernet Segment Id (ESI) and Ethernet Tag (ET) are always 0.

- Rama