Re: MPLS VPN Route Target Rewrite

Carlos,
Thank you for your reply. My configuration is below, but basically i'm
trying to take the route 172.16.5.0/24 from VPN_A on R5, rewrite its
extended community route tag to 100:55 and have that route-tag imported into
VPN_B on R6. I have to say that it does work in terms that only VPN_B sees
it, but i don't understand why it shows that route in both BGP VPNv4 tables
for VPN_A and VPN_B.

R6#
ip vrf VPN_A
 rd 100:1
 route-target export 100:1
 route-target import 100:1
ip vrf VPN_B
 rd 100:2
  route-target export 100:2
 route-target import 100:2
* route-target import 100:55*

R5#
ip vrf VPN_A
 rd 100:1
 export map VPN-A-EXPORT
 route-target export 100:1
 route-target import 100:1
 route-target import 100:55
ip vrf VPN_B
 rd 100:2
 route-target export 100:2
 route-target import 100:2

R5#sh route-map VPN-A-EXPORT
route-map VPN-A-EXPORT, permit, sequence 10
  Match clauses:
    ip address prefix-lists: LO101
  Set clauses:
    extended community RT:100:55
  Policy routing matches: 0 packets, 0 bytes
route-map VPN-A-EXPORT, permit, sequence 100
  Match clauses:
  Set clauses:
    extended community RT:100:1
  Policy routing matches: 0 packets, 0 bytes

Thank you.

TK

On Sat, Jan 29, 2011 at 11:45 AM, Carlos G Mendioroz <tron_at_huapi.ba.ar>wrote:

> Sounds like a problem with the import RT for vrf VPN_A ?
> The route is there with RT 100:55. What are you importing ?
> -Carlos
>
> Tom Kacprzynski @ 29/01/2011 14:23 -0300 dixit:
>
>> Hello experts,
>> Doing a lab wiht MP-BGP and can't seem to figure out how is it possible to
>> get this output. When I do *show ip bgp vpnv4 vrf VPN_A *I don't see
>> 172.16.5.0/24 route, but when i do *show ip bgp vpnv4 all *I see that
>> same
>> route. Shouldn't both of them show the same information. I this lab (INE
>> 14.5) I'm asked to rewrite that prefix's route target and export it from
>> one VRF table to the VPN_A table.
>>
>> Rack1R6#*show ip bgp vpnv4 vrf VPN_A*
>> BGP table version is 41, local router ID is 150.1.6.6
>> 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: 100:1 (*default for vrf VPN_A*)
>> <----- no 172.16.5.0/24 route (see below)
>> *>i155.1.58.0/24 150.1.5.5 0 100 0 ?
>> *> 155.1.67.0/24 0.0.0.0 0 32768 ?
>> *> 172.16.7.0/24 155.1.67.7 0 32768 ?
>>
>>
>> Rack1R6#*show ip bgp vpnv4 all*
>> BGP table version is 41, local router ID is 150.1.6.6
>> 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: 100:1 (*default for vrf VPN_A*)
>> *>i155.1.58.0/24 150.1.5.5 0 100 0 ?
>> *> 155.1.67.0/24 0.0.0.0 0 32768 ?
>> **>i172.16.5.0/24 150.1.5.5 0 100 0 ?
>> <*---- 172.16.5.0/24
>> *> 172.16.7.0/24 155.1.67.7 0 32768 ?
>> Route Distinguisher: 100:2 (default for vrf VPN_B)
>> *>i155.1.5.0/24 150.1.5.5 0 100 0 ?
>> *> 155.1.76.0/24 0.0.0.0 0 32768 ?
>> **>i172.16.5.0/24 150.1.5.5 0 100 0 ?**
>> <*---- 172.16.5.0/24
>> *> 192.168.6.0 0.0.0.0 0 32768 ?
>> *> 192.168.7.0 155.1.76.7 0 32768 ?
>>
>>
>>
>>
>> Rack1R6#*show ip bgp vpnv4 all 172.16.5.0*
>> BGP routing table entry for 100:1:172.16.5.0/24, version 31
>> Paths: (1 available, best #1, *no table*)
>> Not advertised to any peer
>> Local
>> 150.1.5.5 (metric 66) from 150.1.4.4 (150.1.4.4)
>> Origin incomplete, metric 0, localpref 100, valid, internal, best
>> Extended Community: RT:100:55
>> Originator: 150.1.5.5, Cluster list: 150.1.4.4
>> mpls labels in/out nolabel/25
>> BGP routing table entry for 100:2:172.16.5.0/24, version 34
>> Paths: (1 available, best #1, table *VPN_B*)
>> Not advertised to any peer
>> Local, imported path from 100:1:172.16.5.0/24
>> 150.1.5.5 (metric 66) from 150.1.4.4 (150.1.4.4)
>> Origin incomplete, metric 0, localpref 100, valid, internal, best
>> Extended Community: RT:100:55
>> Originator: 150.1.5.5, Cluster list: 150.1.4.4
>> mpls labels in/out nolabel/25
>>
>>
>> Thank you for any help.. i'm really stuck on this and can't figure it out.
>> I
>> fee like i'm missing some piece of information.
>>
>>
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>>
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>>
>>
>>
> --
> Carlos G Mendioroz <tron_at_huapi.ba.ar> LW7 EQI Argentina

Blogs and organic groups at http://www.ccie.net
Received on Sun Jan 30 2011 - 09:49:46 ART