[c-nsp] BFD

[Kristian Larsson]

On Sun, Oct 15, 2006 at 04:34:18PM +0200, Arie Vayner (avayner) wrote:
> Can you please share platform/IOS version/config?
Apologize for not including it at first, I must be
tired ;)


Let's start from the beginning:
Topology is AA <-> BB <-> CC
AA and BB is running 12.2(18)SXF4. CC ran 12.2(18)SXF4 until quite 
recently when we switched to 12.2(33)SRA1. Change of IOS had no impact
on this, it was not working before the switch either.
All the routers are cisco 6500 with a Sup32.

---- AA ----------------------------------
AA# sh isis nei
System Id      Type Interface IP Address      State Holdtime Circuit Id
BB             L2   Gi1/2     85.195.62.69    UP    26       00
XX             L2   Gi1/1     85.195.62.50    UP    25       00

AA# sh bfd nei
OurAddr       NeighAddr     LD/RD RH  Holdown(mult)  State     Int
85.195.62.49  85.195.62.50   9/2  1   658  (5 )      Up        Gi1/1          
85.195.62.70  85.195.62.69   10/3  1   650  (5 )      Up        Gi1/2    

AA# sh run inte gig 1/2
interface GigabitEthernet1/2
 description AA <-> BB
 dampening
 ip address 85.195.62.70 255.255.255.252
 no ip redirects
 no ip proxy-arp
 ip pim sparse-mode
 ip router isis NAO
 load-interval 30
 carrier-delay msec 0
 ipv6 address 2001:4DB8:FFFF:FFFF:1:0:2:1/112
 ipv6 enable
 no ipv6 redirects
 ipv6 router isis NAO
 mls netflow sampling
 bfd interval 150 min_rx 150 multiplier 5
 isis circuit-type level-2-only
 isis network point-to-point
 isis metric 67 level-2
 isis bfd
 isis ipv6 metric 67 level-2
end


---- BB ----------------------------------
BB# sh isis nei
System Id      Type Interface IP Address      State Holdtime Circuit Id
AA             L2   Vl2201    85.195.62.70    UP    25       03
CC             L2   Vl2110    85.195.62.105   UP    24       00

BB# sh bfd nei
OurAddr       NeighAddr     LD/RD RH  Holdown(mult)  State     Int
85.195.62.69  85.195.62.70   3/10  1   726  (5 )      Up        Vl2201         

BB# sh run inte vlan 2201
interface Vlan2201
 description BB <-> AA
 dampening
 ip address 85.195.62.69 255.255.255.252
 no ip redirects
 no ip proxy-arp
 ip pim sparse-mode
 ip router isis NAO
 load-interval 30
 carrier-delay msec 0
 ipv6 address 2001:4DB8:FFFF:FFFF:1:0:2:2/112
 ipv6 enable
 no ipv6 redirects
 ipv6 router isis NAO
 mls netflow sampling
 bfd interval 150 min_rx 150 multiplier 5
 isis circuit-type level-2-only
 isis network point-to-point 
 isis metric 67 level-2
 isis bfd
 isis ipv6 metric 67 level-2
end

BB# sh run inte vlan 2110
interface Vlan2110
 description BB <-> CC
 dampening
 mtu 9216
 ip address 85.195.62.106 255.255.255.252
 no ip redirects
 no ip proxy-arp
 ip pim sparse-mode
 ip router isis NAO
 load-interval 30
 carrier-delay msec 0
 ipv6 address 2001:4DB8:FFFF:FFFF:1:0:3:1/112
 ipv6 enable
 no ipv6 redirects
 ipv6 router isis NAO
 mpls label protocol ldp
 tag-switching ip
 mls netflow sampling
 bfd interval 150 min_rx 150 multiplier 5
 isis circuit-type level-2-only
 isis network point-to-point 
 isis metric 13 level-2
 isis bfd
 isis ipv6 metric 13 level-2
end

BB was the machine that the debug output is from, pasted here for completion:
Oct 15 17:09:23.154 CEST: ISIS-Adj: Rec serial IIH from 0015.c720.5580 (Vlan2110), cir type L2, cir id 00, length 9212
Oct 15 17:09:23.154 CEST: ISIS-Adj: rcvd state UP, old state UP, new state UP
Oct 15 17:09:23.154 CEST: ISIS-Adj: Action = ACCEPT
Oct 15 17:09:23.154 CEST: ISIS-Adj: Register nbr 85.195.62.105, off interface Vlan2110 to BFD
Oct 15 17:09:23.154 CEST: BFD: bfd_neighbor - action:CREATE, proc:1024, idb:Vlan2110, neighbor:85.195.62.105
Oct 15 17:09:23.154 CEST: ISIS-Adj: register to BFD failed


---- CC ----------------------------------
CC# sh isis nei
System Id      Type Interface IP Address      State Holdtime Circuit Id
BB             L2   Vl2110    85.195.62.106   UP    29       01

CC# sh bfd nei
OurAddr       NeighAddr     LD/RD RH  Holdown(mult)  State     Int
85.195.62.105  85.195.62.106   6/0  0   0    (0 )      Fail      Vl2110

CC# sh run inte vlan 2110
interface Vlan2110
 description CC <-> BB
 dampening
 mtu 9216
 ip address 85.195.62.105 255.255.255.252
 no ip redirects
 no ip proxy-arp
 ip pim sparse-mode
 ip router isis NAO
 load-interval 30
 carrier-delay msec 0
 ipv6 address 2001:4DB8:FFFF:FFFF:1:0:3:2/112
 ipv6 enable
 ipv6 router isis NAO
 no ipv6 redirects
 mls netflow sampling
 mpls label protocol ldp
 mpls ip
 bfd interval 150 min_rx 150 multiplier 5
 isis circuit-type level-2-only
 isis network point-to-point 
 isis metric 13 level-2
 isis bfd 
 isis ipv6 metric 13 level-2
end



Hope I didn't forgot anything this time.

Regards,
   Kristian.

-- 
Kristian Larsson                                   KLL-RIPE
Network Engineer                      Net at Once [AS35706]
+46 704 910401			     kristian at spritelink.se