Re: BGP route injection

You posted that the 1.1.3.0/24 was in the BGP table with a next hop of
10.1.34.3, is that not R3? If you're using the summary-only keyword on your
aggregate, you will also need to use an unsupress map to release the more
specific routes, followed by a route map like you see below.
On Apr 19, 2011 8:10 PM, "Jacek" <q.192.168.1.0_at_gmail.com> wrote:
> Thanks for your answer but this will not work. R4 does not receive
> 1.1.3.0/24 from R3 and route map will not match anything. R3 only sends
> aggregate route /22 to R4. I have tested this.
>
>
> On Tue, Apr 19, 2011 at 5:51 PM, Steve Di Bias <sdibias_at_gmail.com> wrote:
>
>> With a route-map on the neighbor statement??
>>
>> router bgp 400
>> neighbor 10.1.34.3 remote-as 300
>> neighbor 10.1.34.3 route-map SET-LOCAL-PREF in
>>
>> route-map SET-LOCAL-PREF permit 10
>> match ip address 1
>> set local-preference 300
>>
>> access-list 1 permit 1.1.3.0 0.0.0.255
>>
>>
>> On Tue, Apr 19, 2011 at 2:09 PM, Jacek <q.192.168.1.0_at_gmail.com> wrote:
>>
>>> Hello Experts,
>>>
>>> I have a question regarding conditional route injection in BGP. Is it
>>> possible to set attributes on an injected route ? Here is scenario:
>>>
>>> R1(AS100)---R2(AS200)---R3(AS300)---R4(AS400)
>>>
>>> R1 advertises four routes: 1.1.0.0/24, 1.1.1.0/24, 1.1.2.0/24 and
>>> 1.1.3.0/24
>>> R3 <http://1.1.3.0/24R3> aggregates those routes as 1.1.0.0/22
>>> R4 injects specific route with command:
>>> # bgp inject-map INJECT exist-map EXIST
>>>
>>> As a result R4 sees aggregated route and more specific route:
>>> Network Next Hop Metric LocPrf Weight Path
>>> *> 1.1.0.0/22 10.1.34.3 0 300 200 100
>>> i
>>> *> 1.1.3.0/24 10.1.34.3 0 ?
>>>
>>> How can I set attributes on R4 on specific /24 route, like local
>>> preference,
>>> and how ?
>>>
>>>
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>>
>>
>> --
>> -Steve Di Bias

Blogs and organic groups at http://www.ccie.net
Received on Tue Apr 19 2011 - 20:21:24 ART