From: GAURAV MADAN (gauravmadan1177@gmail.com)
Date: Wed Oct 22 2008 - 06:38:20 ARST
agree with what Reza said .
Probably the case that if (say) R1 is getting aggregate from R2 .. go
ahead and advertise aggregate + one of specific route .
route-map TEST
match ip address prefix-li <AGGREGATE>
match ip route source <SOURCE>
1 more thing to remmeber is that whatever we are injecting using
"inject map " is seen by all bgp peers . so we may need to filter the
specific route as desired .
HTH
Gaurav Madan
On Wed, Oct 22, 2008 at 1:05 PM, Reza Toghraee <reza@toghraee.com> wrote:
> Dear Dennis,
>
> I didn't test or lab-it-up , but according to your configuration I think :
> 1) bgp inject-map goal is to Conditionally Advertise sub-routes of an
> Aggregate. You can not use it to inject some prefixes from routing table to
> the bgp. Since you don't have any AGGREGATE. I think first you must create
> an AGGREGATE.
>
> 2) the route-map which you used is :
> route-map LEARNED_PATH permit 10
> match ip address prefix-list EXITSING_ROUTE ROUTE-SOURCE
> !
> I never seen this form, I think the correct way is :
>
> route-map LEARNED_PATH permit 10
> match ip address prefix-list EXITSING_ROUTE
> match ip route-source ROUTE-SOURCE
> !
>
>
> Regards
> Reza Toghraee
>
>
>
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
> Dennis Worth
> Sent: Wednesday, October 22, 2008 9:47 AM
> To: Cisco certification
> Subject: BGP Cond Route Injection
>
> I have spent the last 2 hours fumbling with this configure and understand
> it. Any help figuring out what I've done wrong would be awesome.
>
> Here are my configs.
>
> RSRack1R3(config-router)#do sh ip bgp
> BGP table version is 18, local router ID is 150.1.3.3
> 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
> *> 28.119.16.0/24 204.12.1.254 0 0 54 i
> * i 204.12.1.254 0 100 0 54 i
> * i 150.1.6.6 0 100 0 54 i
> *> 28.119.17.0/24 204.12.1.254 0 0 54 i
> * i 204.12.1.254 0 100 0 54 i
> * i 150.1.6.6 0 100 0 54 i
> *> 112.0.0.0 204.12.1.254 0 54 50 60 i
> * i 204.12.1.254 0 100 0 54 50 60 i
> * i 150.1.6.6 0 100 0 54 50 60 i
> *> 113.0.0.0 204.12.1.254 0 54 50 60 i
> * i 204.12.1.254 0 100 0 54 50 60 i
> * i 150.1.6.6 0 100 0 54 50 60 i
> *> 114.0.0.0 204.12.1.254 0 54 i
> * i 204.12.1.254 0 100 0 54 i
> * i 150.1.6.6 0 100 0 54 i
> *> 115.0.0.0 204.12.1.254 0 54 i
> * i 204.12.1.254 0 100 0 54 i
> Network Next Hop Metric LocPrf Weight Path
> * i 150.1.6.6 0 100 0 54 i
> *> 116.0.0.0 204.12.1.254 0 54 i
> * i 204.12.1.254 0 100 0 54 i
> * i 150.1.6.6 0 100 0 54 i
> *> 117.0.0.0 204.12.1.254 0 54 i
> * i 204.12.1.254 0 100 0 54 i
> * i 150.1.6.6 0 100 0 54 i
> *> 118.0.0.0 204.12.1.254 0 54 i
> * i 204.12.1.254 0 100 0 54 i
> * i 150.1.6.6 0 100 0 54 i
> *> 119.0.0.0 204.12.1.254 0 54 i
> * i 204.12.1.254 0 100 0 54 i
> * i 150.1.6.6 0 100 0 54 i
> *>i150.1.0.0/20 167.1.58.8 0 100 0 65078 i
> r>i167.1.4.0/24 150.1.4.4 0 100 0 i
> *>i167.1.5.0/24 167.1.135.5 0 100 0 i
> *>i205.90.31.0 192.10.1.254 0 100 0 254 ?
> *>i220.20.3.0 192.10.1.254 0 100 0 254 ?
> *>i222.22.2.0 192.10.1.254 0 100 0 254 ?
>
>
> RSRack1R3(config-router)# do sh run | b router bgp
> router bgp 100
> no synchronization
> bgp log-neighbor-changes
> bgp inject-map ORIGINATE exist-map LEARNED_PATH
> neighbor AS-100-PEER peer-group
> neighbor AS-100-PEER remote-as 100
> neighbor AS-100-PEER update-source Loopback0
> neighbor AS-100-PEER route-reflector-client
> neighbor AS-100-PEER next-hop-self
> neighbor AS-100-PEER send-community
> neighbor AS-100-PEER route-map TO_IBGP_PEERS out
> neighbor 150.1.1.1 peer-group AS-100-PEER
> neighbor 150.1.4.4 peer-group AS-100-PEER
> neighbor 150.1.6.6 peer-group AS-100-PEER
> neighbor 150.1.9.9 peer-group AS-100-PEER
> neighbor 150.1.9.9 shutdown
> neighbor 150.1.10.10 peer-group AS-100-PEER
> neighbor 150.1.10.10 shutdown
> neighbor 167.1.135.5 peer-group AS-100-PEER
> neighbor 204.12.1.254 remote-as 54
> neighbor 204.12.1.254 remove-private-AS
> neighbor 204.12.1.254 route-map PREPEND out
> no auto-summary
> !
> ip classless
> !
> ip http server
> no ip http secure-server
> !
> !
> ip prefix-list EXITSING_ROUTE seq 5 permit 150.1.0.0/20
> !
> ip prefix-list ROUTE-SOURCE seq 5 permit 167.1.135.5/32
> !
> ip prefix-list SPECIFIC-ROUTE seq 5 permit 150.1.8.0/24
> !
> ip prefix-list SW2_LOOP seq 5 permit 150.1.8.0/24
> !
> ip prefix-list VLAN_4_and_VLAN_5 seq 5 permit 167.1.4.0/24
> ip prefix-list VLAN_4_and_VLAN_5 seq 10 permit 167.1.5.0/24
> !
> route-map LEARNED_PATH permit 10
> match ip address prefix-list EXITSING_ROUTE ROUTE-SOURCE
> !
> route-map ORIGINATE permit 10
> set ip address prefix-list SW2_LOOP
> !
> route-map TO_IBGP_PEERS deny 10
> match ip address prefix-list SPECIFIC-ROUTE
> !
> route-map TO_IBGP_PEERS permit 1000
> !
> route-map PREPEND permit 10
> match ip address prefix-list VLAN_4_and_VLAN_5
> set as-path prepend 100 100
> !
> route-map PREPEND permit 1000
>
> RSRack1R3#sh ip bgp injected-paths
>>>>>BLANK<<<<
>
> Maybe I'm just tired!
> --
> Dennis Worth
>
>
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