I am thinking number 2 assuming R2 has IP of 10.0.24.2 on the R2 - R4 link. May need next-hop-self neighbor command on R4 peering with R3.
________________________________ From: [email protected] [mailto:[email protected]] On Behalf Of Dani Arisandy Sent: Thursday, April 01, 2010 12:37 AM To: Taqdir Singh; [email protected] Subject: Re: [OSL | CCIE_RS] bgp weight Hi Taqdir, A couple of things i want to point out. Don't know wether it's related to the problem or no. 1. No iBGP session between R1 and R2 2. What IGP routing protocol did you use? Have you checked the next hop reachability for the second entry? May it helps! J Regards, Dani A. From: [email protected] [mailto:[email protected]] On Behalf Of Taqdir Singh Sent: 01 April 2010 12:14 To: [email protected] Subject: [OSL | CCIE_RS] bgp weight Hi all, Please see my attached diagram.. where I am advertising 10.0.12.0/24 on R1 and R2. Assume R1 and R2 are ISP and R3 and R4 are customer routers on R3... I want to divert the internal traffic to R4 using weight...but even after clearing session so many times.. BGP next hop still points to R1.. I even used local pref on R4...but still doesnt work...is there anything wrong in my config...or I m missing any step..! R3#sh ip bgp BGP table version is 2, local router ID is 10.0.35.3 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 *> 10.0.12.0/24 10.0.13.1 0 0 100 i * i 10.0.24.2 0 200 100 100 i R3# R1#sh run | s bgp router bgp 100 no synchronization bgp log-neighbor-changes network 10.0.12.0 network 10.0.12.0 mask 255.255.255.0 neighbor 10.0.13.3 remote-as 200 no auto-summary R1# ======================== R2#sh run | s bgp router bgp 100 no synchronization bgp log-neighbor-changes network 10.0.12.0 mask 255.255.255.0 neighbor 10.0.12.1 remote-as 100 neighbor 10.0.24.4 remote-as 200 no auto-summary R2# ========================== R3#sh run | s bgp router bgp 200 no synchronization bgp log-neighbor-changes neighbor 10.0.13.1 remote-as 100 neighbor 10.0.34.4 remote-as 200 neighbor 10.0.34.4 weight 100 no auto-summary R3# ============================== R4#sh run | s bgp router bgp 200 no synchronization bgp default local-preference 200 bgp log-neighbor-changes neighbor 10.0.24.2 remote-as 100 neighbor 10.0.34.3 remote-as 200 no auto-summary R4# -- TAQDIR SINGH +91 -9911709496 +91 -8010415988 -An expert is a man who has made all the mistakes which can be made ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Anheuser-Busch InBev Email Disclaimer www.ab-inbev.com
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