RE: BFD over OSPF & NSF/SSO Catalyst 6500

From: David Prall <dcp_at_dcptech.com>
Date: Mon, 3 Oct 2011 18:15:12 -0400

What happens if you remove "ip ospf bfd" from the interface configuration.
You have already told it to run on all interfaces that have BFD configured.
I've never needed it on an individual interface.

David

--
http://dcp.dcptech.com
> -----Original Message-----
> From: nobody_at_groupstudy.com [mailto:nobody_at_groupstudy.com] On Behalf Of
> JuanF
> Sent: Monday, October 03, 2011 4:17 PM
> To: ccielab_at_groupstudy.com
> Subject: BFD over OSPF & NSF/SSO Catalyst 6500
> 
> Hi all,
> 
> I am trying to enable BFD over OSPF between 2 catalyst 6509 switches,
> but i can
> not see clearly why the bfd session is always on AdminDown state:
> 
> My hw:
> 
> 2 x catalyst6509-E, with dual Sup720-10G +DFC +MSFC3. Ospf interfaces
> running
> BFD are on 6748 line card + CFC. I am using NSF/SSO config, extended to
> OSPF
> process.
> 
> My sw: IOS 12.2.33SXI4 avdipservices
> 
> My configs (on each router)
> 
> ------ROUTER_1------------
> 
> interface GigabitEthernet3/4
>  description CONEXION_1
>  ip address 10.20.254.17 255.255.255.248
>  no ip redirects
>  no ip proxy-arp
>  ip pim sparse-dense-mode
>  ip ospf bfd
>  bfd interval 50 min_rx 50 multiplier 5
> 
> ....
> router ospf 1
>  router-id 10.20.60.129
>  log-adjacency-changes
>  auto-cost reference-bandwidth 10000
>  nsf
>  area 2 nssa default-information-originate no-summary
>  summary-address 10.20.48.0 255.255.240.0
>  summary-address 10.20.64.0 255.255.240.0
>  redistribute connected metric-type 1 subnets
>  redistribute static metric-type 1 subnets
>  network 10.20.60.129 0.0.0.0 area 0
>  network 10.20.60.128 0.0.0.127 area 0
>  network 10.20.83.92 0.0.0.0 area 2
>  network 10.20.83.124 0.0.0.0 area 2
>  network 10.20.254.6 0.0.0.0 area 0
>  network 10.20.254.9 0.0.0.0 area 0
>  network 10.20.254.16 0.0.0.7 area 0
>  network 10.20.254.33 0.0.0.0 area 0
>  network 10.20.254.100 0.0.0.0 area 0
>  network 10.20.254.109 0.0.0.0 area 0
>  bfd all-interfaces
> ...
> 
> -----------ROUTER2------------
> 
> ....
> 
> interface GigabitEthernet1/4
>  description CONEXION_1
>  ip address 10.20.254.18 255.255.255.248
>  no ip redirects
>  no ip proxy-arp
>  ip pim sparse-dense-mode
>  load-interval 30
>  ip ospf bfd
>  bfd interval 50 min_rx 50 multiplier 5
> 
> ----
> 
> router ospf 1
>  router-id 10.20.29.131
>  log-adjacency-changes detail
>  auto-cost reference-bandwidth 10000
>  nsf
>  area 1 nssa default-information-originate no-summary
>  summary-address 10.20.16.0 255.255.240.0
>  redistribute connected subnets
>  redistribute static metric-type 1 subnets
>  network 10.20.29.92 0.0.0.0 area 1
>  network 10.20.29.124 0.0.0.0 area 1
>  network 10.20.29.131 0.0.0.0 area 0
>  network 10.20.254.5 0.0.0.0 area 0
>  network 10.20.254.16 0.0.0.7 area 0
>  network 10.20.254.25 0.0.0.0 area 0
>  network 10.20.254.49 0.0.0.0 area 0
>  network 10.20.254.100 0.0.0.0 area 0
>  network 10.20.254.105 0.0.0.0 area 0
>  bfd all-interfaces
> 
> 
> The OSPF adjacency becomes FULL on the ospf interface BFD is
> configured, but
> BFD is always "AdminDown". If you display the "show bfd nei det", you
> can see
> that each end sends BFD control packets, but no receives (it is
> strange, i do
> not have any type of filter or similar)
> 
> Looking at the BFD 6500s restrictions exposed at:
> http://www.cisco.com/en/US/docs/ios/iproute_bfd/configuration/guide/irb
> _bfd_ps6441_TSD_Products_Configuration_Guide_Chapter.html
> 
> , i am not sure if BFD not stablish because i have CFC on the line
> cards...
> 
> Anyone can help ?
> 
> TIA & Best Regards.
> 
> 
> Blogs and organic groups at http://www.ccie.net
> 
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Received on Mon Oct 03 2011 - 18:15:12 ART

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