[c-nsp] BGP Flap Problem

[Alexandra Alvarado]

Hello,

 

 

I have configured MP-BGP but some networks go and come every 30 second. What
could be the reason to this behavior? The configuration is like this:

 

Router1 (10.101.11.233)

 

router bgp 65000

 bgp log-neighbor-changes

 neighbor 10.101.11.255 remote-as 65000

 neighbor 10.101.11.255 description gye_pe7200_t

 neighbor 10.101.11.255 update-source Loopback0

!

 address-family ipv4

 no neighbor 10.101.11.255 activate

 no auto-summary

 no synchronization

 exit-address-family

 !

 address-family vpnv4

 neighbor 10.101.11.255 activate

 neighbor 10.101.11.255 route-reflector-client

 neighbor 10.101.11.255 send-community extended

exit-address-family

!         

ip classless

no ip http server

 

Router2 (10.101.11.255)

 

router bgp 65000

 bgp router-id 10.101.11.255

 bgp log-neighbor-changes

 neighbor 10.101.11.233 remote-as 65000

 neighbor 10.101.11.233 description rrgyempls

 neighbor 10.101.11.233 update-source Loopback0

!

 address-family ipv4

 no neighbor 10.101.11.233 activate

 no auto-summary

 no synchronization

 exit-address-family

 !

 address-family vpnv4

 neighbor 10.101.11.233 activate

 neighbor 10.101.11.233 send-community extended

 exit-address-family

 !

 

 

lab_rrgyempls#show ip bgp vpnv4 all nei 10.101.11.255 rout

BGP table version is 271, local router ID is 10.101.11.233

Status codes: s suppressed, d damped, h history, * valid, > best, i -
internal,

              r RIB-failure, S Stale

Origin codes: i - IGP, e - EGP, ? - incomplete

 

   Network          Next Hop            Metric LocPrf Weight Path

Route Distinguisher: 19169:1

*>i10.10.51.0/27    10.101.11.255            0    100      0 ?

*>i10.101.12.248/32 10.101.11.255            0    100      0 19169 ?

*>i10.101.12.255/32 10.101.11.255            0    100      0 ?

*>i10.201.12.64/26  10.101.11.255            0    100      0 ?

*>i10.201.12.128/26 10.101.11.255            0    100      0 19169 ?

*>i200.93.195.0     10.101.11.255            0    100      0 19169 i

Route Distinguisher: 65000:1

*>i201.218.37.0     10.101.11.255            0    100      0 ?

 

Total number of prefixes 7 

 

lab_rrgyempls#show ip bgp vpnv4 all nei 10.101.11.255 rout

BGP table version is 274, local router ID is 10.101.11.233

Status codes: s suppressed, d damped, h history, * valid, > best, i -
internal,

              r RIB-failure, S Stale

Origin codes: i - IGP, e - EGP, ? - incomplete

 

   Network          Next Hop            Metric LocPrf Weight Path

Route Distinguisher: 19169:1

*>i10.10.51.0/27    10.101.11.255            0    100      0 ?

*>i10.101.12.255/32 10.101.11.255            0    100      0 ?

*>i10.201.12.64/26  10.101.11.255            0    100      0 ?

Route Distinguisher: 65000:1

*>i201.218.37.0     10.101.11.255            0    100      0 ?

 

Total number of prefixes 4 

 

lab_rrgyempls#

 

Thanks

 

 

A.A.A.A.