[rbak-nsp] strange BGP printouts...

Ronald Voermans r.voermans at global-datacenter.nl
Fri Jan 13 08:36:16 EST 2012


What does your config look like for this peer?

Op 13 jan. 2012, om 14:09 heeft Marcin Kuczera het volgende geschreven:

> Ronald Voermans wrote:
>> Hi Marcin,
>> the first one is seen as an internal neighbour (ibgp), hence the 'i' in the path. No as-path is neccessary with ibgp!
> 
> The problem is that this is an external peer !
> [bgp1]R0_SE600#show bgp neighbor 91.195.159.6
> BGP neighbor: 91.195.159.6, remote AS: 30799, external link
>  Version: 4, router identifier: 80.238.64.1
>  State: Established for 01:43:23
>  Description: peering Internetia-Dworek
>  Last read 00:00:32, last send 00:00:07
>  Hold time: configured 180, negotiated 180
>  Keepalive time: configured 60, negotiated 60
>  Local restart timer 120 sec, stale route retain timer 180 sec
>  Received restart timer 0 sec, flag 0x0
>  Number of hops external BGP neighbor may be away: 1
>  Minimum time between advertisement runs: 30 secs
>  Source (local) IP address: 91.195.159.5
>  Received messages: 109 (2238 bytes), notifications: 0, in queue: 0
>  Sent messages: 121 (3928 bytes), notifications: 0, out queue: 0
>  Reset count: 1, last reset time: 01:43:34, reset reason: User action
> 
>  CapSent: refresh, 4byteAS, unicast, restart
>  CapRcvd: refresh, unicast
> 
>  Address family: ipv4 unicast
>    BGP table version: 24930765, neighbor version: 24930645
>    Prefix maximum limit: 100
>    Route map in   : direct-peering-rix-in
>    Route map out  : direct-peering-rix-out
>    Routes: rcvd 4, imported 0, active 1, history 0, dampend 0, sent 274
> [bgp1]R0_SE600#
> 
> So, bug ?
> 
> Regards,
> Marcin
> 
> 
> 
>> Regards,
>> Ronald
>> Op 13 jan. 2012, om 13:53 heeft Marcin Kuczera het volgende geschreven:
>>> look here, I have 2 peers with exacly the same route-maps
>>> 
>>> Neighbor              AS  MsgRcvd  MsgSent    TblVer  InQ OutQ Rst Up/Down  PfxRcvd/Sent  RstNeeded
>>> 91.195.159.6       30799       91      102  24923197    0    0   1 01:24:59      4    274        No
>>> 91.195.159.10     196858    18964    18991  24923213    0    0   2 1w6d      3    272        No
>>> 
>>> 
>>> Now, look at example of advertised routes:
>>> 
>>> 
>>> [bgp1]R0_SE600#show bgp route neighbor 91.195.159.6 advertised
>>> Address Family: ipv4 unicast
>>> BGP table version is 24923469, local router ID is 195.66.73.250
>>> Status codes: d damped, h history, > best, i internal
>>> Origin codes: i - IGP, e - EGP, ? - incomplete
>>> 
>>>  Network            Next Hop                Metric  LocPrf  Weight Path
>>>> 31.11.128.0/17     91.195.159.5                 0     600     100 i
>>>> 37.8.192.0/18      91.195.159.5                 0     600     100 i
>>>> 77.222.224.0/21    91.195.159.5                 0     600     100 i
>>>> 77.222.232.0/21    91.195.159.5                 0     600     100 i
>>>> 77.222.240.0/20    91.195.159.5                 0     600     100 i
>>>> 78.31.136.0/21     91.195.159.5                 0     600     100 i
>>>> 78.88.0.0/20       91.195.159.5                 0     600     100 i
>>>> 78.88.16.0/22      91.195.159.5                 0     600     100 i
>>>> 78.88.20.0/23      91.195.159.5                 0     600     100 i
>>>> 78.88.22.0/23      91.195.159.5                 0     600     100 i
>>>> 78.88.24.0/21      91.195.159.5                 0     600     100 i
>>>> 78.88.32.0/21      91.195.159.5                 0     600     100 i
>>>> 78.88.40.0/23      91.195.159.5                 0     600     100 i
>>>> 78.88.43.0/24      91.195.159.5                 0     600     100 i
>>>> 78.88.48.0/21      91.195.159.5                 0     600     100 i
>>>> 78.88.56.0/21      91.195.159.5                 0     600     100 i
>>>> 78.88.64.0/21      91.195.159.5                 0     600     100 i
>>>> 78.88.72.0/21      91.195.159.5                 0     600     100 i
>>>> 78.88.80.0/22      91.195.159.5                 0     600     100 i
>>>> 78.88.84.0/22      91.195.159.5                 0     600     100 i
>>>> 78.88.88.0/23      91.195.159.5                 0     600     100 i
>>>> 78.88.90.0/23      91.195.159.5                 0     600     100 i
>>>> 78.88.92.0/24      91.195.159.5                 0     600     100 i
>>>> 78.88.93.0/24      91.195.159.5                 0     600     100 i
>>>> 78.88.96.0/21      91.195.159.5                 0     600     100 i
>>>> 78.88.106.0/23     91.195.159.5                 0     600     100 i
>>>> 78.88.108.0/24     91.195.159.5                 0     600     100 i
>>>> 78.88.109.0/24     91.195.159.5                 0     600     100 i
>>>> 78.88.110.0/23     91.195.159.5                 0     600     100 i
>>>> 78.88.112.0/21     91.195.159.5                 0     600     100 i
>>> [bgp1]R0_SE600#show bgp route neighbor 91.195.159.10 advertised
>>> Address Family: ipv4 unicast
>>> BGP table version is 24923504, local router ID is 195.66.73.250
>>> Status codes: d damped, h history, > best, i internal
>>> Origin codes: i - IGP, e - EGP, ? - incomplete
>>> 
>>>  Network            Next Hop                Metric  LocPrf  Weight Path
>>>> 31.11.128.0/17     91.195.159.9                 0     600     100 13000 29314 i
>>>> 37.8.192.0/18      91.195.159.9                 0     600     100 13000 29314 i
>>>> 77.222.224.0/21    91.195.159.9                 0     600     100 13000 29314 i
>>>> 77.222.232.0/21    91.195.159.9                 0     600     100 13000 29314 i
>>>> 77.222.240.0/20    91.195.159.9                 0     600     100 13000 29314 i
>>>> 78.31.136.0/21     91.195.159.9                 0     600     100 13000 44124 i
>>>> 78.88.0.0/20       91.195.159.9                 0     600     100 13000 29314 i
>>>> 78.88.16.0/22      91.195.159.9                 0     600     100 13000 29314 i
>>>> 78.88.20.0/23      91.195.159.9                 0     600     100 13000 29314 i
>>>> 78.88.22.0/23      91.195.159.9                 0     600     100 13000 29314 i
>>>> 78.88.24.0/21      91.195.159.9                 0     600     100 13000 29314 i
>>>> 78.88.32.0/21      91.195.159.9                 0     600     100 13000 29314 i
>>>> 78.88.40.0/23      91.195.159.9                 0     600     100 13000 29314 i
>>>> 78.88.43.0/24      91.195.159.9                 0     600     100 13000 29314 i
>>>> 78.88.48.0/21      91.195.159.9                 0     600     100 13000 29314 i
>>>> 78.88.56.0/21      91.195.159.9                 0     600     100 13000 29314 i
>>>> 78.88.64.0/21      91.195.159.9                 0     600     100 13000 29314 i
>>>> 78.88.72.0/21      91.195.159.9                 0     600     100 13000 29314 i
>>>> 78.88.80.0/22      91.195.159.9                 0     600     100 13000 29314 i
>>>> 78.88.84.0/22      91.195.159.9                 0     600     100 13000 29314 i
>>>> 78.88.88.0/23      91.195.159.9                 0     600     100 13000 29314 i
>>>> 78.88.90.0/23      91.195.159.9                 0     600     100 13000 29314 i
>>>> 78.88.92.0/24      91.195.159.9                 0     600     100 13000 29314 i
>>>> 78.88.93.0/24      91.195.159.9                 0     600     100 13000 29314 i
>>>> 78.88.96.0/21      91.195.159.9                 0     600     100 13000 29314 i
>>>> 78.88.106.0/23     91.195.159.9                 0     600     100 13000 29314 i
>>>> 78.88.108.0/24     91.195.159.9                 0     600     100 13000 29314 i
>>>> 78.88.109.0/24     91.195.159.9                 0     600     100 13000 29314 i
>>>> 78.88.110.0/23     91.195.159.9                 0     600     100 13000 29314 i
>>>> 78.88.112.0/21     91.195.159.9                 0     600     100 13000 29314 i
>>> [bgp1]R0_SE600#
>>> 
>>> 
>>> the first one is strange, because it looks like AS path is missing.
>>> Is it a random bug ?
>>> 
>>> Regards,
>>> Marcin
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>>> redback-nsp at puck.nether.net
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>>> 
> 
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