[quagga-users 13969] Re: Auth errors when adding OSPF routes fast

Timo Schöler timo at riscworks.net
Mon Apr 20 09:17:33 BST 2015


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On 04/20/2015 08:43 AM, Timo Schöler wrote:

> Hi,
> 
> I run quagga for doing some OSPF stuff on CentOS. MD5
> authentication is being used within the OSPF entity.
> 
> In total I have nine (ten, when I'm firing up one management host
> that only runs temporarily) machines in that setup. On CentOS 5 and
> 6 I run quagga 0.99.23.1 (built from source) now, before that
> 0.99.15 from repo, on CentOS 7 (the management machine) it's
> 0.99.22.4-4 from repo.
> 
> Four of those machines act as L2TP LNS for some ten thousand
> sessions. Certain DSL connections are disconnected every 24 hours
> (due to historical reasons), so that it happens from time to time
> that within a few seconds several hundret or even two to four
> thousand routes are being flushed and added *very* quickly when the
> CPEs return.
> 
> Only then I see this on several nodes running in that OSPF net:
> 
> 2015/04/20 08:35:02 OSPF: interface ens4:12.34.56.130:
> ospf_check_md5 bad sequence 1429526867 (expect 1429526869) 
> 2015/04/20 08:35:02 OSPF: interface ens4:12.34.56.130:
> ospf_check_md5 bad sequence 1429526868 (expect 1429526869) 
> 2015/04/20 08:35:17 OSPF: interface ens4:12.34.56.130:
> ospf_check_md5 bad sequence 1429513257 (expect 1429513258) 
> 2015/04/20 08:35:45 OSPF: interface ens4:12.34.56.130:
> ospf_check_md5 bad sequence 1429515808 (expect 1429515809)
> 
> Is that a known issue? How could I circumvent it?

Sorry for causing noise on the list, I filed this and my SPEC file
hassle in bugzilla.

Best,

Timo

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