Hi, 2 ideas. 1) do a "show ip local policy", 2) after having shut down the interface watch a debug with "debug ip icmp" and look for a redirect.
Kim On Mon, Feb 27, 2012 at 2:44 PM, Benny Sumardy <[email protected]> wrote: > > Hi Guys, > > These are the output of : > > IGP (RIPv2 for connecting BGP links) : > R4#sr | s router rip > router rip > version 2 > network 10.0.0.0 > no auto-summary > R4# > > show ip bgp : > > > R4#sib > BGP table version is 8, local router ID is 4.4.4.4 > 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 > *> 1.0.0.0 10.1.14.1 0 400 0 100 i > *>i2.0.0.0 10.1.23.2 0 100 0 i > *>i3.0.0.0 10.1.34.3 0 100 0 i > *> 4.0.0.0 0.0.0.0 0 32768 i > * 11.0.0.0 10.1.14.1 0 0 100 i > *>i 10.1.12.1 0 400 0 100 i > R4# > > > show ip route 11.1.1.1 & longer : > > R4#sir 11.1.1.1 > Routing entry for 11.0.0.0/8 > Known via "bgp 200", distance 200, metric 0 > Tag 100, type internal > Last update from 10.1.12.1 00:07:16 ago > Routing Descriptor Blocks: > * 10.1.12.1, from 10.1.23.2, 00:07:16 ago > Route metric is 0, traffic share count is 1 > AS Hops 1 > Route tag 100 > MPLS label: none > R4#sir 11.1.1.1 longer > Codes: L - local, C - connected, S - static, R - RIP, M - mobile, B - BGP > D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area > N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2 > E1 - OSPF external type 1, E2 - OSPF external type 2 > i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2 > ia - IS-IS inter area, * - candidate default, U - per-user static route > o - ODR, P - periodic downloaded static route, + - replicated route > > Gateway of last resort is not set > > B 11.0.0.0/8 [200/0] via 10.1.12.1, 00:07:32 > R4# > > show ip cef : > > R4#sh ip cef > Prefix Next Hop Interface > 0.0.0.0/0 no route > 0.0.0.0/8 drop > 0.0.0.0/32 receive > 1.0.0.0/8 10.1.14.1 Ethernet0/0 > 2.0.0.0/8 10.1.34.3 Serial1/0.43 > 3.0.0.0/8 10.1.34.3 Serial1/0.43 > 4.0.0.0/8 attached Loopback0 > 4.0.0.0/32 receive Loopback0 > 4.4.4.4/32 receive Loopback0 > 4.255.255.255/32 receive Loopback0 > 10.1.12.0/24 10.1.14.1 Ethernet0/0 > 10.1.12.1/32 10.1.14.1 Ethernet0/0 > 10.1.14.0/24 attached Ethernet0/0 > 10.1.14.0/32 receive Ethernet0/0 > 10.1.14.1/32 attached Ethernet0/0 > 10.1.14.4/32 receive Ethernet0/0 > 10.1.14.255/32 receive Ethernet0/0 > 10.1.23.0/24 10.1.34.3 Serial1/0.43 > 10.1.23.2/32 10.1.34.3 Serial1/0.43 > 10.1.34.0/24 attached Serial1/0.43 > 10.1.34.0/32 receive Serial1/0.43 > 10.1.34.3/32 10.1.34.3 Serial1/0.43 > Prefix Next Hop Interface > 10.1.34.4/32 receive Serial1/0.43 > 10.1.34.255/32 receive Serial1/0.43 > 11.0.0.0/8 10.1.14.1 Ethernet0/0 > 127.0.0.0/8 drop > 224.0.0.0/4 drop > 224.0.0.0/24 receive > 240.0.0.0/4 drop > 255.255.255.255/32 receive > R4# > > Traceroute : > R4#trace 11.1.1.1 > > Type escape sequence to abort. > Tracing the route to 11.1.1.1 > > 1 10.1.14.1 4 msec * 0 msec > > > Did the sh ip route 11.1.1.1, it showed 10.1.12.1 as the next hop. But the > cef listed the next hop to 10.1.14.1 (which is directly connected) rather > than 10.1.12.1 (few hops away) as commanded by Local-Pref. > Absurd, still try to find what's goin on ... Let me know if i still missed > anything... > > > Brgds > Benny > > > >> Date: Mon, 27 Feb 2012 10:32:50 +0530 >> From: [email protected] >> To: [email protected] >> CC: [email protected] >> Subject: Re: [OSL | CCIE_RS] Local Preference issue. >> >> Yes, it would be more specific route directing traffic towards 14.1 as we >> believe. Can you check routing table and CEF table for the below one. >> >> show ip route 11.1.1.1 >> show ip cef .. >> >> venkee >> >> On 27 February 2012 00:26, Rob Pool <[email protected]> wrote: >> >> > If it had the same route in an igp an r would show up because the BGP >> > route would prevent it from being inserted in the rib. However, a more >> > specific route in an igp wouldn't prevent the less specific BGP route from >> > being inserted. >> > >> > Sent from my iPhone >> > >> > On Feb 26, 2012, at 1:49 PM, <[email protected]> wrote: >> > >> > > If it had a more specific route from another protocol, wouldn't a "r" >> > for "rib failure"show up for the route in the "sh ip bgp" command? >> > > >> > > Could an ICMP redirect from 10.1.12.1 is causing this? >> > > >> > > Doug >> > > -------- Original Message -------- >> > > Subject: Re: [OSL | CCIE_RS] Local Preference issue. >> > > From: Rob Pool <[email protected]> >> > > Date: Sun, February 26, 2012 10:41 am >> > > To: Benny Sumardy <[email protected]> >> > > Cc: CCIE ONLINE STUDY LIST <[email protected]> >> > > >> > > My guess would be that you have a more specific route being provided by >> > an igp or static route. >> > > >> > > Sent from my iPhone >> > > >> > > On Feb 26, 2012, at 12:05 PM, Benny Sumardy <[email protected]> >> > wrote: >> > > >> > > > >> > > > Hi, >> > > > >> > > > Applied a local pref value for network 11.0.0.0 (as shown below), so >> > the best route will prefer 10.1.12.1 (3 hops) than 10.1.14.1 (1 hop). >> > > > But when I do a traceroute, the result still gone through 10.1.14.1. >> > Can anybody help on what's missing here? Thanks >> > > > >> > > > Rgds >> > > > Ben >> > > > >> > > > >> > > > R4(config-router)#do sib >> > > > BGP table version is 7, local router ID is 4.4.4.4 >> > > > 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 >> > > > *> 1.0.0.0 10.1.14.1 0 400 0 100 i >> > > > *>i2.0.0.0 10.1.23.2 0 100 0 i >> > > > *>i3.0.0.0 10.1.34.3 0 100 0 i >> > > > *> 4.0.0.0 0.0.0.0 0 32768 i >> > > > *>i11.0.0.0 10.1.12.1 0 400 0 100 i >> > > > * 10.1.14.1 0 0 100 i >> > > > R4(config-router)#do trace 11.1.1.1 >> > > > >> > > > Type escape sequence to abort. >> > > > Tracing the route to 11.1.1.1 >> > > > >> > > > 1 10.1.14.1 12 msec * 0 msec >> > > > R4(config-router)#do sir 11.0.0.0 >> > > > Routing entry for 11.0.0.0/8 >> > > > Known via "bgp 200", distance 200, metric 0 >> > > > Tag 100, type internal >> > > > Last update from 10.1.12.1 00:01:14 ago >> > > > Routing Descriptor Blocks: >> > > > * 10.1.12.1, from 10.1.23.2, 00:01:14 ago >> > > > Route metric is 0, traffic share count is 1 >> > > > AS Hops 1 >> > > > Route tag 100 >> > > > MPLS label: none >> > > > R4(config-router)# >> > > > R4(config-router)#do trace 11.1.1.1 >> > > > >> > > > Type escape sequence to abort. >> > > > Tracing the route to 11.1.1.1 >> > > > >> > > > 1 10.1.14.1 4 msec * 4 msec >> > > > R4(config-router)# >> > > > >> > > > _______________________________________________ >> > > > For more information regarding industry leading CCIE Lab training, >> > please visit www.ipexpert.com >> > > > >> > > > Are you a CCNP or CCIE and looking for a job? Check out >> > www.PlatinumPlacement.com >> > > > >> > > > http://onlinestudylist.com/mailman/listinfo/ccie_rs >> > > _______________________________________________ >> > > For more information regarding industry leading CCIE Lab training, >> > please visit www.ipexpert.com >> > > >> > > Are you a CCNP or CCIE and looking for a job? Check out >> > www.PlatinumPlacement.com >> > > >> > > http://onlinestudylist.com/mailman/listinfo/ccie_rs >> > _______________________________________________ >> > For more information regarding industry leading CCIE Lab training, please >> > visit www.ipexpert.com >> > >> > Are you a CCNP or CCIE and looking for a job? Check out >> > www.PlatinumPlacement.com >> > >> > http://onlinestudylist.com/mailman/listinfo/ccie_rs >> > >> _______________________________________________ >> For more information regarding industry leading CCIE Lab training, please >> visit www.ipexpert.com >> >> Are you a CCNP or CCIE and looking for a job? Check out >> www.PlatinumPlacement.com >> >> http://onlinestudylist.com/mailman/listinfo/ccie_rs > > _______________________________________________ > For more information regarding industry leading CCIE Lab training, please > visit www.ipexpert.com > > Are you a CCNP or CCIE and looking for a job? Check out > www.PlatinumPlacement.com > > http://onlinestudylist.com/mailman/listinfo/ccie_rs -- // Freedom Matters // CCIE #29189 // www.packet-forwarding.net _______________________________________________ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com http://onlinestudylist.com/mailman/listinfo/ccie_rs
