[c-nsp] ASR9k: BGP state = Idle (No route to multi-hop neighbor)

[David Prall]

What happens if you install a static /32. I believe that multi-hop requires
a /32 for the neighbor.

David

--
http://dcp.dcptech.com

> -----Original Message-----
> From: cisco-nsp-bounces at puck.nether.net [mailto:cisco-nsp-
> bounces at puck.nether.net] On Behalf Of Jason Lixfeld
> Sent: Friday, December 28, 2012 4:58 PM
> To: <cisco-nsp at puck.nether.net> NSP
> Subject: [c-nsp] ASR9k: BGP state = Idle (No route to multi-hop neighbor)
> 
> Hi there,
> 
> 
> Unless I'm doing something really silly, I can't seem to get a multi-hop
ebgp
> session up on an ASR9k.  I'm wondering if anyone can spot something I
> might have overlooked or am just not aware of :
> 
> The neighbor reports:
> 
> BGP state = Idle (No route to multi-hop neighbor)
> 
> Which is odd because there is a route for this in the BGP table already.
It's
> pingable, etc.
> 
> RP/0/RSP0/CPU0:asr9k#show route vrf Inetv4 1.1.1.254
> Fri Dec 28 16:49:58.718 EST
> 
> Routing entry for 1.1.1.252/30
>   Known via "bgp 1", distance 200, metric 1, type internal
>   Installed Dec 21 16:54:49.859 for 6d23h
>   Routing Descriptor Blocks
>     2.2.2.2, from 3.3.3.3
>       Nexthop in Vrf: "default", Table: "default", IPv4 Unicast, Table Id:
> 0xe0000000
>       Route metric is 1
>   No advertising protos.
> RP/0/RSP0/CPU0:asr9k#
> 
> !
> router bgp 1
>  vrf Inetv4
>   neighbor 1.1.1.254
>    remote-as 65535
>    ebgp-multihop 255
>    update-source Loopback1
>    ignore-connected-check
>    address-family ipv4 unicast
>     remove-private-AS
>    !
>   !
>  !
> !
> 
> RP/0/RSP0/CPU0:asr9k#sh bgp vrf Inetv4 neighbors 1.1.1.254
> Fri Dec 28 16:47:11.630 EST
> 
> BGP neighbor is 1.1.1.254, vrf Inetv4
>  Remote AS 65535, local AS 1, external link
>  Remote router ID 0.0.0.0
>   BGP state = Idle (No route to multi-hop neighbor)
>   Last read 00:00:00, Last read before reset 00:00:00
>   Hold time is 180, keepalive interval is 60 seconds
>   Configured hold time: 180, keepalive: 60, min acceptable hold time: 3
>   Last write 00:00:00, attempted 0, written 0
>   Second last write 00:00:00, attempted 0, written 0
>   Last write before reset 00:00:00, attempted 0, written 0
>   Second last write before reset 00:00:00, attempted 0, written 0
>   Last write pulse rcvd  not set last full not set pulse count 0
>   Last write pulse rcvd before reset 00:00:00
>   Socket not armed for io, not armed for read, not armed for write
>   Last write thread event before reset 00:00:00, second last 00:00:00
>   Last KA expiry before reset 00:00:00, second last 00:00:00
>   Last KA error before reset 00:00:00, KA not sent 00:00:00
>   Last KA start before reset 00:00:00, second last 00:00:00
>   Precedence: internet
>   Graceful restart is enabled
>   Restart time is 120 seconds
>   Stale path timeout time is 360 seconds
>   Enforcing first AS is enabled
>   Multi-protocol capability not received
>   Received 0 messages, 0 notifications, 0 in queue
>   Sent 0 messages, 0 notifications, 0 in queue
>   Minimum time between advertisement runs is 0 secs
> 
>  For Address Family: IPv4 Unicast
>   BGP neighbor version 0
>   Update group: 0.6 Filter-group: 0.0  No Refresh request being processed
>   eBGP neighbor with no inbound or outbound policy; defaults to 'drop'
>   Private AS number removed from updates to this neighbor
>   AF-dependent capabilities:
>     Graceful Restart capability advertised
>       Local restart time is 120, RIB purge time is 600 seconds
>       Maximum stalepath time is 360 seconds
>   Route refresh request: received 0, sent 0
>   0 accepted prefixes, 0 are bestpaths
>   Cumulative no. of prefixes denied: 0.
>   Prefix advertised 0, suppressed 0, withdrawn 0
>   Maximum prefixes allowed 1048576
>   Threshold for warning message 75%, restart interval 0 min
>   An EoR was not received during read-only mode
>   Last ack version 0, Last synced ack version 0
>   Outstanding version objects: current 0, max 0
>   Additional-paths operation: None
> 
>   Connections established 0; dropped 0
>   Local host: 0.0.0.0, Local port: 0
>   Foreign host: 1.1.1.254, Foreign port: 0
>   Last reset 00:00:00
>   External BGP neighbor may be up to 255 hops away.
> RP/0/RSP0/CPU0:asr9k#
> 
> Thanks in advance.
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