From: EDL (r.s.cciestudy@gmail.com)
Date: Sat Jan 19 2008 - 00:08:00 ARST
Just advertise 155.1.0.2 in OSPF on R2, then everything will be fine.
On Fri, 18 Jan 2008 2:29 pm, uyota oyearone wrote:
> R3#sh ip bgp
>
> Network Next Hop Metric LocPrf Weight Path
> *> 155.1.3.0/24 0.0.0.0 0 32768 i
> * 155.1.5.0/24 155.1.0.5 0 100 0 (65002) 1
> i
>
> There must be something wrong with my frameSwitch. The next hop cannot
> possibly
> be 155.1.0.5. since r3 & r5 are not directly connected. and # no frame
> inverse-arp # is enabled on r5.
> ***
> From your suggestion, r5 is not running ospf. its only peeing with R2.
> ***
> when i do a #sho ip route , on r3, i was hoping to see something
> like...
>
> [B 155.1.5.0 [200/0] via 155.1.23.2, 00:....], but this does not show
> up on the
> routing table on r3.
>
> hmmm... This tells me r2 is no advertising the network to R3.
>
> from R3#show ip bgp nei [r3] advertised-routes, this comes up..
>
> *> 155.1.5.0/24 155.1.0.5 0 0 1 i
>
> What else......????
>
> Thanks
>
>> From: r.s.cciestudy@gmail.com
>
>> To: spycharlies@hotmail.com; ccielab@groupstudy.com
>> Subject: Re: troubleshooting bgp confederation, HELP!!
>> Date: Fri, 18 Jan 2008 12:20:28 -0800
>>
>> Hey,
>>
>> Just do a show ip bgp on R3. Look at the next-hop for R5's route.
>> That is
>> your problem area. You did not advertise it to OSPF.
>>
>> HTH,
>> Ed
>>
>>
>> ----- Original Message -----
>> From: "uyota oyearone" <spycharlies@hotmail.com>
>> To: "CCIE" <ccielab@groupstudy.com>
>> Sent: Wednesday, January 16, 2008 4:15 PM
>> Subject: troubleshooting bgp confederation, HELP!!
>>
>>
>> > Hi Engineers;
>> >
>> > Am having problems pinging and tracing an advertised network via BGP
>> > Confederation. Here is the basic config. let me know if am missing
>> > something
>> > OR how i can troubleshooting this problem.
>> >
>> > ***
>> > [R3(as 65013)]s1/3-->s1/1[r2(as
>> 65002)]s1/0-->frameRelay-->s1/0[r5(as
>> > 1)]--r3
>> > & R2 Directly connected, r2 & R5 thru. Frame Relay***
>> > --R3#
>> > interface Ethernet0/0 ip address 155.1.3.3 255.255.255.0!router
>> ospf 1
>> > router-id 3.3.3.3 log-adjacency-changes network 155.1.23.3 0.0.0.0
>> area
>> > 0!router bgp 65013 no synchronization bgp log-neighbor-changes bgp
>> > confederation identifier 2 bgp confederation peers 65002 network
>> 155.1.3.0
>> > mask 255.255.255.0 neighbor 155.1.23.2 remote-as 65002 no
>> auto-summary
>> > --R2#
>> > interface Ethernet0/1 ip address 155.1.5.5 255.255.255.0!interface
>> > Serial1/0
>> > ip address 155.1.0.2 255.255.255.0 encapsulation frame-relay ip ospf
>> > network
>> > broadcast serial restart-delay 0 no dce-terminal-timing-enable
>> frame-relay
>> > map
>> > ip 155.1.0.5 205 broadcast no frame-relay inverse-arp!router ospf 1
>> > router-id
>> > 2.2.2.2 log-adjacency-changes network 155.1.23.2 0.0.0.0 area
>> 0!router bgp
>> > 65002 no synchronization bgp log-neighbor-changes bgp confederation
>> > identifier
>> > 2 bgp confederation peers 65013 network 155.1.2.0 mask 255.255.255.0
>> > neighbor
>> > 155.1.0.5 remote-as 1 neighbor 155.1.23.3 remote-as 65013 no
>> > auto-summary--R5#
>> > interface Ethernet0/1 ip address 155.1.5.5 255.255.255.0!interface
>> > Serial1/0
>> > ip address 155.1.0.5 255.255.255.0 encapsulation frame-relay ip ospf
>> > network
>> > broadcast serial restart-delay 0 no dce-terminal-timing-enable
>> frame-relay
>> > map
>> > ip 155.1.0.2 502 broadcast no frame-relay inverse-arp!router bgp 1
>> no
>> > synchronization bgp log-neighbor-changes network 155.1.5.0 mask
>> > 255.255.255.0
>> > neighbor 155.1.0.2 remote-as 2 no auto-summary
>> > ===r5# sh ip bgp
>> > Network Next Hop Metric LocPrf Weight Path*>
>> > 155.1.2.0/24 155.1.0.2 0 0 2 i*>
>> > 155.1.3.0/24
>> > 155.1.0.2 0 2 i*> 155.1.5.0/24 0.0.0.0
>> > 0 32768 i
>> > r5#ping 155.1.0.2 (**frame connection workin fine)
>> > Type escape sequence to abort.Sending 5, 100-byte ICMP Echos to
>> 155.1.0.2,
>> > timeout is 2 seconds:!!!!!Success rate is 100 percent (5/5),
>> round-trip
>> > min/avg/max = 40/68/120 ms
>> > --r5#ping 155.1.2.2 so e0/1 (** directly connected adv. netw
>> working fine)
>> > Type escape sequence to abort.Sending 5, 100-byte ICMP Echos to
>> 155.1.2.2,
>> > timeout is 2 seconds:Packet sent with a source address of
>> > 155.1.5.5!!!!!Success rate is 100 percent (5/5), round-trip
>> min/avg/max =
>> > 32/64/92 ms
>> > --r5#ping 155.1.3.3 so e0/1
>> > Type escape sequence to abort.Sending 5, 100-byte ICMP Echos
>> tPacket sent
>> > with
>> > a source addres.....Success rate is 0 percent (0/5)
>> >
>> > ***We would assume the problem is btw r2 & r3***
>> > R2#sh ip bgp
>> > Network Next Hop Metric LocPrf Weight Path*>
>> > 155.1.2.0/24 0.0.0.0 0 32768 i*> 155.1.3.0/24
>> > 155.1.23.3 0 100 0 (65013) i*> 155.1.5.0/24
>> > 155.1.0.5 0 0 1 i
>> > *> 155.1.5.0/24 155.1.0.5 0 0 1 i--r2#sh ip
>> > bgp
>> > su
>> > Neighbor V AS MsgRcvd MsgSent TblVer InQ OutQ Up/Down
>> > State/PfxRcd155.1.0.5 4 1 84 86 5 0 0
>> > 01:19:10 1155.1.23.3 4 65013 84 84 5 0
>> > 0
>> > 01:18:34 2
>> >
>> > R2#ping 155.1.3.3 so fa0/0
>> > Type escape sequence to abort.Sending 5, 100-byte ICMP Echos to
>> 155.1.3.3,
>> > timeout is 2 seconds:Packet sent with a source address of
>> > 155.1.2.2!!!!!Success rate is 100 percent (5/5), round-trip
>> min/avg/max =
>> > 24/52/84 ms
>> > *****R3#clea ip bgp 155.1.2.2Debug on R3******Mar 1 04:00:51.003:
>> > %BGP-5-ADJCHANGE: neighbor 155.1.23.2 Up*Mar 1 04:00:51.019: BGP(0):
>> > 155.1.23.2 send UPDATE (format) 155.1.3.0/24, next 155.1.23.3,
>> metric 0,
>> > path
>> > Local*Mar 1 04:00:51.023: BGP(0): 155.1.23.2 NEXT_HOP part 1 net
>> > 155.1.4.0/24, next155.1.13.1*Mar 1 04:00:51.027: BGP(0): 155.1.23.2
>> send
>> > UPDATE (format) 155.1.4.0/24, next 155.1.13.1, metric 0, path 3*Mar
>> 1
>> > 04:00:51.047: BGP(0): 155.1.23.2 rcvd UPDATE w/ attr: nexthop
>> 155.1.23.2,
>> > origin i, localpref 100, metric 0, path (65002)*Mar 1 04:00:51.055:
>> > BGP(0):
>> > 155.1.23.2 rcvd 155.1.2.0/24*Mar 1 04:00:51.063: BGP(0): 155.1.23.2
>> rcvd
>> > UPDATE w/ attr: nexthop 155.1.0.5, origin i, localpref 100, metric
>> 0, path
>> > (65002) 1*Mar 1 04:00:51.071: BGP(0): 155.1.23.2 rcvd 155.1.5.0/24
>> > ******This shows R3 received the network 155.1.5.0/24. **No access
>> list,
>> > community etc. has been configured***
>> >
>> > What other troubleshooting step do i take to enable me know y I'm
>> unable
>> > to
>> > ping of trace this network.
>> > Regards
>> >
>> >
>> >
>> >
>> >
>> >
>> >
>> >
>> >
>> >
>> > _________________________________________________________________
>> >
>> >
>> _______________________________________________________________________
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>> >
>>
>
> --------------------
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