[c-nsp] Unable to create BFD session on C6500

[Alessandro Braga]

Marco,

Are you using NSF/SSO on the C6500 devices? If yes, please check the
restrictions regarding the use of BFD and NSF.


Regards,
Alessandro


On Dec 9, 2014 5:49 PM, "Murat Kaipov" <mkkaipov at gmail.com> wrote:

> Hello Marco.
> Keep in mind that ME3600/ME3800 platforms doesn't support BFD offload, and
> all BFD packets processed by CPU.
>
> http://www.cisco.com/c/en/us/td/docs/switches/metro/me3600x_3800x/software/r
> elease/15-4_1_S/chassis/configuration/guide/3600x_24cxscg/swbfd.pdf
> <http://www.cisco.com/c/en/us/td/docs/switches/metro/me3600x_3800x/software/release/15-4_1_S/chassis/configuration/guide/3600x_24cxscg/swbfd.pdf>
> Show configuration on both sides please.
>
>
> -----Original Message-----
> From: cisco-nsp [mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of
> Marco Marzetti
> Sent: Tuesday, December 09, 2014 6:22 PM
> To: cisco-nsp at puck.nether.net
> Subject: [c-nsp] Unable to create BFD session on C6500
>
> Hello,
>
> We run BFD on all of our devices and we're currently having some problems
> between a pair of C6500/SUP720 and a ME3600X .
>
> The network diagram is as follows:
>
>                +-----------+
>                |           |
>       +--------+  C6500_1  |
>       |        |           |
>       |        +----+-+----+
> +----+----+        | |
> |         |        | |
> | ME3600X |        | |
> |         |        | |
> +----+----+        | |
>       |        +----+-+----+
>       |        |           |
>       +--------+  C6500_2  |
>                |           |
>                +-----------+
>
> Both the C6500 run the following software:
> s72033-adventerprisek9-mz.151-2.SY2.bin
> Both C6500 are SUP720-3B and there isn't any dCEF enabled card on them.
>
> The OSPF sessions on C6500_1 is in FULL state:
>
> C6500_1# show ip ospf neighbor | i 2/7
> 192.0.2.19    0   FULL/  -        00:00:32    192.0.2.173
> GigabitEthernet2/7
>
> and the relevant configuration is as follows:
>
> interface gigabitEthernet 2/7
>   ip ospf network point-to-point
>   ip ospf 1 area 0
>   bfd interval 300 min_rx 300 multiplier 3
>   no bfd echo
> !
> router ospf 1
>   bfd all-interfaces
> !
>
> Anyway IOS is not able to start a BFD session on that interface:
>
> C6500_1# show ip ospf neighbor 212.183.160.19 | i BFD C6500_1#
>
> And returns an error when BFD debugging is on:
>
> C6500_1#show debugging
> BFD:
>    BFD event debugging is on for interface GigabitEthernet2/7
>    BFD packet debugging is on for interface GigabitEthernet2/7 C6500_1#conf
> t Enter configuration commands, one per line.  End with CNTL/Z.
> C6500_1(config)#int gi2/7
> C6500_1(config-if)#no bfd interval
> C6500_1(config-if)#bfd interval 300 min_rx 300 multi 3 C6500_1(config-if)#
> Dec  9 16:07:42.737: BFD-DEBUG EVENT: bfd_session_create failed, 6
> C6500_1(config-if)#
>
> At the same time there are running BFD sessions on other interfaces
> configured with the very same statements:
>
> For instance the following interface is connected to another ME3600X that
> is
> running the same software version:
>
> C6500_1#show bfd neighbors | i 2/6
> 192.0.2.109                       294/3          Up        Up        Gi2/6
> C6500_1#
>
> Can anyone help?
>
> Thank You
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