Re: BGP routes don't show up in BGP table

From: Huy Luu (hluu@xxxxxxxxxxxx)
Date: Wed Mar 20 2002 - 16:16:05 GMT-3


   
I also had the same problem. I'm running ios 12.1.10 on 2524 router. I
tried no sync, no auto-summary, but unsuccessful. Routes that are learned
from static, dynamic, or connected are not advertised using the network
statement? Has anyone else experience this?

                    Lab Candidate

                    <labccie@yahoo To: ccielab@groupstudy.com

                    .com> cc:

                    Sent by: Subject: BGP routes don't show up
in BGP table
                    nobody@groupst

                    udy.com

                    03/20/02 01:47

                    PM

                    Please respond

                    to Lab

                    Candidate

Here is a basic BGP setup with r1 and r2:
   r1 AS100 r2 AS200
     s0----------------s0
  lo0 1.1.1.1 lo0 2.2.2.2
I am advertising both r1's and r2's loopbacks lo0 by putting under a
network statement.
but somehow they never showed up in the other's BGP table. What am I doing
wrong?
here is the configs and output from both r1 and r2:

r1#
1d00h: BGP: 192.168.1.2 went from Idle to Active
1d00h: BGP: 192.168.1.2 open active, delay 15324ms
1d00h: BGP: 192.168.1.2 open active, local address 192.168.1.1
1d00h: BGP: scanning routing tables
1d00h: BGP: nettable_scan: invalidate local path for 1.0.0.0/8
1d00h: BGP: nettable_scan: invalidate sourced path for 1.0.0.0/8
1d00h: BGP: no valid path for 1.0.0.0/8
1d00h: BGP: nettable_walker 1.0.0.0/8 no best path

r1#sh ip ro
Codes: C - connected, S - static, I - IGRP, 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, E - EGP
       i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, * - candidate
default
       U - per-user static route, o - ODR

Gateway of last resort is not set

     1.0.0.0/24 is subnetted, 1 subnets
C 1.1.1.0 is directly connected, Loopback0
C 192.168.1.0/24 is directly connected, Serial0

r1#sh ip bgp
    {blank}
r1#

r1#sh run
Building configuration...

Current configuration:
!
version 12.0
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname r1
!
!
ip subnet-zero
!
!
!
interface Loopback0
 ip address 1.1.1.1 255.255.255.0
 no ip directed-broadcast
!
interface Ethernet0
 no ip address
 no ip directed-broadcast
 shutdown
!
interface Serial0
 ip address 192.168.1.1 255.255.255.0
 no ip directed-broadcast
 clockrate 64000
!
interface Serial1
 no ip address
 no ip directed-broadcast
 shutdown
!
router bgp 100
 network 1.1.1.1
 neighbor 192.168.1.2 remote-as 200
!
ip classless
!
!
line con 0
 exec-timeout 0 0
 logging synchronous
 transport input none
line aux 0
line vty 0 4
!
end

r1#
r1#sh ip bgp nei
BGP neighbor is 192.168.1.2, remote AS 200, external link
 Index 1, Offset 0, Mask 0x2
  BGP version 4, remote router ID 2.2.2.2
  BGP state = Established, table version = 25, up for 00:03:02
  Last read 00:00:03, hold time is 180, keepalive interval is 60 seconds
  Minimum time between advertisement runs is 30 seconds
  Received 6 messages, 0 notifications, 0 in queue
  Sent 6 messages, 0 notifications, 0 in queue
  Prefix advertised 0, suppressed 0, withdrawn 0
  Connections established 1; dropped 0
  Last reset never
  0 accepted prefixes consume 0 bytes
  0 history paths consume 0 bytes
Connection state is ESTAB, I/O status: 1, unread input bytes: 0
Local host: 192.168.1.1, Local port: 11000
Foreign host: 192.168.1.2, Foreign port: 179

Enqueued packets for retransmit: 0, input: 0 mis-ordered: 0 (0 bytes)

Event Timers (current time is 0x545E3C0):
Timer Starts Wakeups Next
Retrans 19 12 0x0
TimeWait 0 0 0x0
AckHold 6 2 0x0
SendWnd 0 0 0x0
KeepAlive 0 0 0x0
GiveUp 0 0 0x0
PmtuAger 0 0 0x0
DeadWait 0 0 0x0

iss: 278568032 snduna: 278568157 sndnxt: 278568157 sndwnd: 16260
irs: 2897909981 rcvnxt: 2897910106 rcvwnd: 16260 delrcvwnd: 124

SRTT: 614 ms, RTTO: 4262 ms, RTV: 1517 ms, KRTT: 0 ms
minRTT: 24 ms, maxRTT: 300 ms, ACK hold: 200 ms
Flags: higher precedence, nagle

Datagrams (max data segment is 1460 bytes):
Rcvd: 11 (out of order: 0), with data: 6, total data bytes: 124
Sent: 10 (retransmit: 12), with data: 6, total data bytes: 124
r1#

=================== r2 config and debug =================
r2#sh run
Building configuration...

Current configuration:
!
version 12.0
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname r2
!
!
ip subnet-zero
!
!
!
interface Loopback0
 ip address 2.2.2.2 255.255.255.0
 no ip directed-broadcast
!
interface Ethernet0
 no ip address
 no ip directed-broadcast
 shutdown
!
interface Serial0
 ip address 192.168.1.2 255.255.255.0
 no ip directed-broadcast
!
interface Serial1
 no ip address
 no ip directed-broadcast
 shutdown
!
router bgp 200
 network 2.2.2.2
 neighbor 192.168.1.1 remote-as 100
!
ip classless
!
!
line con 0
 transport input none
line aux 0
line vty 0 4
!
end

r2#
r2#sh ip int b
Interface IP-Address OK? Method Status
Protocol

Ethernet0 unassigned YES unset administratively down
down

Loopback0 2.2.2.2 YES manual up up

Serial0 192.168.1.2 YES manual up up

Serial1 unassigned YES unset administratively down
down

r2#sh ip ro
Codes: C - connected, S - static, I - IGRP, 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, E - EGP
       i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, * - candidate
default
       U - per-user static route, o - ODR

Gateway of last resort is not set

     2.0.0.0/24 is subnetted, 1 subnets
C 2.2.2.0 is directly connected, Loopback0
C 192.168.1.0/24 is directly connected, Serial0

r2#sh ip bgp
   {blank}
r2#

r2#sh ip bgp nei
r2#sh ip bgp neighbors
BGP neighbor is 192.168.1.1, remote AS 100, external link
 Index 1, Offset 0, Mask 0x2
  BGP version 4, remote router ID 1.1.1.1
  BGP state = Established, table version = 23, up for 00:00:17
  Last read 00:00:16, hold time is 180, keepalive interval is 60 seconds
  Minimum time between advertisement runs is 30 seconds
  Received 3 messages, 0 notifications, 0 in queue
  Sent 3 messages, 0 notifications, 0 in queue
  Prefix advertised 0, suppressed 0, withdrawn 0
  Connections established 1; dropped 0
  Last reset never
  0 accepted prefixes consume 0 bytes
  0 history paths consume 0 bytes
Connection state is ESTAB, I/O status: 1, unread input bytes: 0
Local host: 192.168.1.2, Local port: 179
Foreign host: 192.168.1.1, Foreign port: 11000

Enqueued packets for retransmit: 0, input: 0 mis-ordered: 0 (0 bytes)

Event Timers (current time is 0xF02CC):
Timer Starts Wakeups Next
Retrans 4 0 0x0
TimeWait 0 0 0x0
AckHold 3 2 0x0
SendWnd 0 0 0x0
KeepAlive 0 0 0x0
GiveUp 0 0 0x0
PmtuAger 0 0 0x0
DeadWait 0 0 0x0

iss: 2897909981 snduna: 2897910049 sndnxt: 2897910049 sndwnd: 16317
irs: 278568032 rcvnxt: 278568100 rcvwnd: 16317 delrcvwnd: 67

SRTT: 710 ms, RTTO: 4442 ms, RTV: 1511 ms, KRTT: 0 ms
minRTT: 16 ms, maxRTT: 300 ms, ACK hold: 200 ms
Flags: passive open, nagle, gen tcbs

Datagrams (max data segment is 1460 bytes):
Rcvd: 6 (out of order: 0), with data: 3, total data bytes: 67
Sent: 6 (retransmit: 0), with data: 3, total data bytes: 67
r2#sh ip bgp neighbors ?
  A.B.C.D Neighbor to display information about
  <cr>



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