From: uyota oyearone (spycharlies@hotmail.com)
Date: Fri Jan 18 2008 - 20:29:03 ARST
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
possiblybe 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> >> >> >> >> >> >> >> >> >> >> >
This archive was generated by hypermail 2.1.4 : Fri Feb 01 2008 - 10:38:00 ARST