From: Bryan Bartik (bbartik@ipexpert.com)
Date: Sun Mar 15 2009 - 12:17:25 ART
Ok Deepak, Do you want R1 to be the preferred exit point for AS 100 to reach
those networks? You should be setting MEDs (outbound) or AS-path prepend on
R3 and R4.
On Sat, Mar 14, 2009 at 10:51 PM, Nitin Venugopal <nitinsworld@gmail.com>wrote:
> You can ignore the Pt 2., since R3 is orginating the 200.X.X.X route
>
>
>
> On Sun, Mar 15, 2009 at 8:44 AM, Nitin Venugopal <nitinsworld@gmail.com>wrote:
>
>> Hi,
>> 1. Why you have not set any MED on R2 ,
>> 2. Why there is no not community set on R4 ?
>>
>> By default R4 will be recieving MED 0 from R2 and hence INCOMING traffic
>> to AS 100 will prefer via R2. (Any value hIgher than 50 should have been
>> set on R2 )
>>
>> Regds
>> Nitin
>>
>> On Sun, Mar 15, 2009 at 8:22 AM, Deepak Ahuja <deeps.ccie@gmail.com>wrote:
>>
>>> Hi Bryan
>>>
>>> Thanks a lot for a quick reply
>>>
>>> Here are the configs
>>>
>>> R1
>>>
>>> router bgp 100
>>> bgp router-id 9.9.1.1
>>> no bgp default ipv4-unicast
>>> bgp log-neighbor-changes
>>> neighbor 9.9.2.2 remote-as 100
>>> neighbor 9.9.2.2 update-source Loopback0
>>> neighbor 9.9.13.3 remote-as 200
>>> !
>>> address-family ipv4
>>> neighbor 9.9.2.2activate
>>> neighbor 9.9.2.2 send-community
>>> neighbor 9.9.2.2 next-hop-self
>>> neighbor 9.9.13.3 activate
>>> neighbor 9.9.13.3 send-community
>>> neighbor 9.9.13.3 route-map MED out
>>> no auto-summary
>>> no synchronization
>>> exit-address-family
>>>
>>> ip community-list 1 permit 200:200
>>>
>>> route-map MED per 10
>>> match community 1
>>> set metric 50
>>> route-map MED per 20
>>>
>>> R2
>>>
>>> router bgp 100
>>> bgp router-id 9.9.2.2
>>> no bgp default ipv4-unicast
>>> bgp log-neighbor-changes
>>> neighbor 9.9.1.1 remote-as 100
>>> neighbor 9.9.1.1 update-source Loopback0
>>> neighbor 9.9.24.4 remote-as 200
>>> !
>>> address-family ipv4
>>> neighbor 9.9.1.1activate
>>> neighbor 9.9.1.1 send-community
>>> neighbor 9.9.1.1 next-hop-self
>>> neighbor 9.9.24.4 activate
>>> neighbor 9.9.24.4 send-community
>>> no auto-summary
>>> no synchronization
>>> exit-address-family
>>>
>>>
>>>
>>>
>>> R3
>>>
>>> router bgp 200
>>> bgp router-id 9.9.3.3
>>> no bgp default ipv4-unicast
>>> bgp log-neighbor-changes
>>> neighbor 9.9.4.4 remote-as 200
>>> neighbor 9.9.4.4 update-source Loopback0
>>> neighbor 9.9.13.1 remote-as 100
>>> !
>>> address-family ipv4
>>> neighbor 9.9.4.4 activate
>>> neighbor 9.9.4.4 send-community
>>> neighbor 9.9.4.4 next-hop-self
>>> neighbor 9.9.13.1 activate
>>> neighbor 9.9.13.1 send-community
>>> network 200.200.200.1 mask 255.255.255.255 route-map COMM
>>> network 200.200.201.2 mask 255.255.255.255 route-map COMM
>>> no auto-summary
>>> no synchronization
>>> exit-address-family
>>>
>>> route-map COMM
>>> set community 200:200
>>>
>>>
>>> R4
>>>
>>> router bgp 200
>>> bgp router-id 9.9.4.4
>>> no bgp default ipv4-unicast
>>> bgp log-neighbor-changes
>>> neighbor 9.9.3.3 remote-as 200
>>> neighbor 9.9.3.3 update-source Loopback0
>>> neighbor 9.9.24.2 remote-as 100
>>> !
>>> address-family ipv4
>>> neighbor 9.9.3.3 activate
>>> neighbor 9.9.3.3 send-community
>>> neighbor 9.9.3.3 next-hop-self
>>> neighbor 9.9.24.2 activate
>>> neighbor 9.9.24.2 send-community
>>> no auto-summary
>>> no synchronization
>>> exit-address-family
>>>
>>> Show ip bgp on any router does not show the change in metric
>>>
>>>
>>> Regards
>>> Deepak
>>>
>>>
>>>
>>> On Sat, Mar 14, 2009 at 11:30 AM, Bryan Bartik <bbartik@ipexpert.com>
>>> wrote:
>>>
>>> > Outbound route-map with AS-Path prepend or MED will work. Do you see
>>> the
>>> > prepend values or MED values on R1 and R2? Post your configs.
>>> >
>>> >
>>> > On Sat, Mar 14, 2009 at 11:31 AM, Deepak Ahuja <deeps.ccie@gmail.com
>>> >wrote:
>>> >
>>> >> Hi Ryan
>>> >>
>>> >> I have to use a OUTBOUND route-map
>>> >>
>>> >> On Sat, Mar 14, 2009 at 10:18 AM, Ryan DeBerry <rdeberry@gmail.com>
>>> >> wrote:
>>> >>
>>> >> > To manipulate outbound traffic use local pref applied inbound.
>>> >> >
>>> >> > On Sat, Mar 14, 2009 at 12:03 PM, Deepak Ahuja <
>>> deeps.ccie@gmail.com
>>> >> >wrote:
>>> >> >
>>> >> >> Hi Experts
>>> >> >>
>>> >> >> I know this is simple for you folks but I am really stucked
>>> >> >>
>>> >> >> Situation
>>> >> >>
>>> >> >> R 1----------BGP AS 100-----------------R2
>>> >> >> | |
>>> >> >> | |
>>> >> >> | |
>>> >> >> R3--------------------BGP AS 200---------R4
>>> >> >>
>>> >> >>
>>> >> >> I have following routes advertised to R1 and R2 from AS 200 with
>>> >> >> Community
>>> >> >> 200:200
>>> >> >>
>>> >> >> 1. 200.200.200.1/32
>>> >> >> 2. 200.200.200.2/32
>>> >> >>
>>> >> >> Condition
>>> >> >>
>>> >> >> I need to make R1 as the primary gateway for these routes using an
>>> >> >> outbound
>>> >> >> route-map and community
>>> >> >>
>>> >> >>
>>> >> >>
>>> >> >> I tried with the AS PATH And MED it doesnt work.
>>> >> >>
>>> >> >>
>>> >> >> Please help, any insight on that is appreciated
>>> >> >>
>>> >> >> Regards
>>> >> >> Deepak Ahuja
>>> >> >>
>>> >> >>
>>> >> >> Blogs and organic groups at http://www.ccie.net
>>> >> >>
>>> >> >>
>>> _______________________________________________________________________
>>> >> >> Subscription information may be found at:
>>> >> >> http://www.groupstudy.com/list/CCIELab.html
>>> >>
>>> >>
>>> >> Blogs and organic groups at http://www.ccie.net
>>> >>
>>> >>
>>> _______________________________________________________________________
>>> >> Subscription information may be found at:
>>> >> http://www.groupstudy.com/list/CCIELab.html
>>> >>
>>> >>
>>> >>
>>> >>
>>> >>
>>> >>
>>> >>
>>> >>
>>> >
>>> >
>>> > --
>>> > Bryan Bartik
>>> > CCIE #23707, CCNP
>>> > Sr. Support Engineer - IPexpert, Inc.
>>> > URL: http://www.IPexpert.com <http://www.ipexpert.com/>
>>>
>>>
>>> Blogs and organic groups at http://www.ccie.net
>>>
>>> _______________________________________________________________________
>>> Subscription information may be found at:
>>> http://www.groupstudy.com/list/CCIELab.html
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>
>
-- Bryan Bartik CCIE #23707, CCNP Sr. Support Engineer - IPexpert, Inc. URL: http://www.IPexpert.comBlogs and organic groups at http://www.ccie.net
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