[j-nsp] RSVP neighbor sequence changes

[Alex Arseniev]

Duplicate IP on this shared segment?
Just my guess...
HTH
Thanks
Alex

On 04/02/2014 14:38, Eric Van Tol wrote:
> Hi all,
> Two sets of routers in my network keep logging the following message:
>
> rpd[1559]: RPD_RSVP_NBRDOWN: RSVP neighbor x.x.x.x down on interface ae0.1 nbr-type Direct, neighbor seq number change
>
> The interface is different on the two sets of routers, obviously.  All other RSVP sessions seem to work fine:
>
> RSVP neighbor: 6 learned
> Address       Idle Up/Dn LastChange HelloInt HelloTx/Rx MsgRcvd
> x.x.x.x          0  2/1  12w4d 21:39:06        9 1282869/1282869 376297
> x.x.x.x          0  2/1    19:29:02        9  7786/7786 18297
> x.x.x.x          0  1/0     3:19:29        9  1322/1322 11192
> x.x.x.x          5  2/1     2:54:20        9  1238/1220 1251
> x.x.x.x          0  1/0    19:39:33        9  7817/7817 41623
> x.x.x.x         10  0/0           8        9  1361/1361 16225
>
> It's that last one which keeps resetting every 9 seconds.  Communication between the opposing interfaces is fine with no errors that I can see.  I've tried disabling RSVP on both sides, but this doesn't resolve the issue when it's re-enabled.
>
> What type of situation can cause both neighbors to constantly change their sequence number?  RFC3209 shows:
>
> "This value MUST change when the sender is reset, when the node reboots, or when communication is lost to the neighboring node and otherwise remains the same."
>
> None of those conditions appear to be getting met, so I'm a bit puzzled.
>
> -evt
>
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