From: Miguel Trejo (mike.trejo@gmail.com)
Date: Sat May 17 2008 - 08:59:39 ART
http://www.cisco.com/en/US/docs/ios/iproute/command/reference/irp_bgp3.html#wp1013044
Seems like only ACL are supported for this, try with a regular ACL instead
of prefix and let me know.
On Sat, May 17, 2008 at 12:34 AM, RoRo <cisconetman@gmail.com> wrote:
> Hi Robert,
>
> I have run into this same situation with my customer. What version of IOS
> are you running and on what platform?
>
>
> On 5/16/08, Robert Smith <thecure007@gmail.com> wrote:
> >
> > Hi experts,
> >
> > Here I come again with another question.
> >
> > r6-------------sw1------------------------sw2
> >
> > all of them are in bgp as 100
> > sw1 is the route reflector
> >
> > r6 is advertising network 1.1.1.0/24 to sw1 via bgp
> >
> > I am trying to have sw1 send a default network to sw2 only if
> > 1.1.1.0/24exists in its bgp table:
> >
> >
> > ip prefix-list EXIST seq 5 permit 1.1.1.0/24
> > !
> > route-map EXIST permit 10
> > match ip address prefix-list EXIST
> > !
> > router bgp 100
> > neighbor 172.16.78.8 default-originate route-map EXIST
> >
> > 1.1.1.0 is in sw1 bgp table:
> >
> > sw1# sh ip bgp
> > BGP table version is 4, local router ID is 172.16.78.7
> > 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
> > *>i1.1.1.0/24 172.16.67.6 0 100 0 i
> >
> > sw1#sh ip route
> > Codes: C - connected, S - static, R - RIP, M - mobile, B - BGP
> > D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
> > N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
> > E1 - OSPF external type 1, E2 - OSPF external type 2
> > i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS
> level-2
> > ia - IS-IS inter area, * - candidate default, U - per-user static
> > route
> > o - ODR, P - periodic downloaded static route
> >
> > Gateway of last resort is not set
> >
> > 1.0.0.0/24 is subnetted, 1 subnets
> > B 1.1.1.0 [200/0] via 172.16.67.6, 00:00:02
> >
> > However it is not generating a default route for sw2:
> >
> > sw2#sh ip bgp
> > BGP table version is 1, local router ID is 172.16.78.8
> > 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
> > * i1.1.1.0/24 172.16.67.6 0 100 0 i
> >
> > In the other hand, if I have r6 send 1.1.1.0 network to sw1 via ospf,
> then
> > it originates the default route to sw2:
> >
> > sw1#sh ip route os
> > 1.0.0.0/24 is subnetted, 1 subnets
> > O 1.1.1.0 [110/65] via 172.16.67.6, 00:00:00, Serial2/0
> > sw1#
> >
> > ========================================
> >
> > sw2#sh ip bgp
> > BGP table version is 3, local router ID is 172.16.78.8
> > 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
> > *>i0.0.0.0 172.16.78.7 100 0 i
> > *>i1.1.1.0/24 172.16.67.6 0 100 0 i
> > sw2#
> >
> > So here I am confused. Is the neighbor default-originate route-map
> command
> > meant to work only with igp advertised networks but not with bgp
> networks?
> >
> > Many thanks,
> >
> >
> > _______________________________________________________________________
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>
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