RE: BGP- Conditional attribute

I did , I m using dynamics do you think it causing issue ? I restarted couple
of times..

> Date: Mon, 7 Mar 2011 17:48:02 -0600
> Subject: Re: BGP- Conditional attribute
> From: nilsi2002_at_gmail.com
> To: i_sameer_at_hotmail.com
> CC: ccielab_at_groupstudy.com
>
> Try to debug bgp updates and also look at the sh ip bgp neighbor ..
>
> show ip bgp neighbor x.x.x.x | include Condition-map
>
> After a clear ip bgp * it might take a few minutes.
>
> -Rich
>
> On Mon, Mar 7, 2011 at 12:37 PM, sameer inam <i_sameer_at_hotmail.com> wrote:
> > I m just trying to use the below config which you gave me , its didn't
work
> > .. Same thing I can not see any 7.7.7.7 route on the AS200 router .. any
> > idea why ?
> >
> >
> >
> >
> >
> >> Date: Sun, 6 Mar 2011 18:51:59 -0600
> >> Subject: Re: BGP- Conditional attribute
> >> From: nilsi2002_at_gmail.com
> >> To: i_sameer_at_hotmail.com
> >> CC: ccielab_at_groupstudy.com
> >>
> >> Hi,
> >>
> >> I'm not sure if I understand the scenario exactly.
> >>
> >> But here is a conditional scenario where 7.7.7.7 will be in the AS300
> >> bgp table but won't be advertised to AS200 if there is no default
> >> route. The conditional syntax determines whether a network is
> >> announced or withdrawn from the neighbor in question.
> >>
> >> -Rich
> >>
> >> >>>>>>>>>>no default route<<<<<<<<<<<<<<<<<
> >> Router R1
> >>
> >>
> >>
> >> router bgp 200
> >> no synchronization
> >> bgp log-neighbor-changes
> >> neighbor 9.9.12.2 remote-as 300
> >> default-information originate
> >> no redistribute static
> >> no auto-summary
> >> !
> >> ip forward-protocol nd
> >> ip route 0.0.0.0 0.0.0.0 Null0
> >>
> >> R1#sh ip bgp
> >> BGP table version is 2, local router ID is 1.1.1.1
> >> 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
> >> *> 8.8.8.8/32 9.9.12.2 0 0 300 i
> >> R1#
> >>
> >>
> >> Router R2
> >>
> >>
> >>
> >> router bgp 300
> >> no synchronization
> >> bgp log-neighbor-changes
> >> network 7.7.7.7 mask 255.255.255.255
> >> network 8.8.8.8 mask 255.255.255.255
> >> neighbor 9.9.12.1 remote-as 200
> >> neighbor 9.9.12.1 advertise-map PC exist-map DEFAULT
> >> no auto-summary
> >> !
> >>
> >> !
> >> ip prefix-list DEFAULT seq 5 permit 0.0.0.0/0
> >> !
> >> ip prefix-list PC seq 5 permit 7.7.7.7/32
> >>
> >> !
> >> !
> >> !
> >> !
> >> route-map PC permit 10
> >> match ip address prefix-list PC
> >> !
> >> route-map DEFAULT permit 10
> >> match ip address prefix-list DEFAULT
> >> !
> >>
> >> R2#sh ip bgp
> >> BGP table version is 7, local router ID is 8.8.8.8
> >> 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
> >> *> 7.7.7.7/32 0.0.0.0 0 32768 i
> >> *> 8.8.8.8/32 0.0.0.0 0 32768 i
> >> R2#
> >>
> >>
> >>
> >>
> >> >>>Now if default is available from AS200<<<<
> >>
> >>
> >>
> >> R1#sh ip bgp
> >> BGP table version is 4, local router ID is 1.1.1.1
> >> 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
> >> *> 0.0.0.0 0.0.0.0 0 32768 ?
> >> *> 7.7.7.7/32 9.9.12.2 0 0 300 i
> >> *> 8.8.8.8/32 9.9.12.2 0 0 300 i
> >> R1#
> >>
> >> '
> >> R2#sh ip bgp
> >> BGP table version is 9, local router ID is 8.8.8.8
> >> 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
> >> *> 0.0.0.0 9.9.12.1 0 0 200 ?
> >> *> 7.7.7.7/32 0.0.0.0 0 32768 i
> >> *> 8.8.8.8/32 0.0.0.0 0 32768 i
> >> R2#
> >>
> >>
> >>
> >>
> >> On Sun, Mar 6, 2011 at 6:51 AM, sameer inam <i_sameer_at_hotmail.com>
wrote:
> >> > Dear expert,
> >> > I m trying to implement the conditional attribute Via EBGP . I put the
> >> > condition on router which has AS300 and other side is AS200 , its like
> >> > that
> >> > there is one PC connected in to AS300 network which has IP of 7.7.7.7
.
> >> >
> >> > condition is if AS200 router has default route then 7.7.7.7 network
can
> >> > show
> >> > into BGP routing table of that router otherwise NO . after I put the
> >> > condition
> >> > on AS300 router I cannot see 7.7.7.7 route on AS200 router BGP
routing
> >> > table
> >> > but issue is when I m trying to define the default route on AS200
router
> >> > its
> >> > show as static on normal routing table not in BGP routing table .
> >> > AS200 R2 > AS300 R3 >PC 7.7.7.7
> >> > can any one help me on that .
> >> > kind regards,
> >> > Sameer
> >> >
> >> >
> >> > Blogs and organic groups at http://www.ccie.net
> >> >
> >> >
Received on Tue Mar 08 2011 - 04:05:58 ART