From: Adel Abouchaev (adel@netmasterclass.net)
Date: Wed Mar 17 2004 - 16:51:47 GMT-3
This is a forwarded message
From: Adel Abouchaev <adel@netmasterclass.net>
To: "Mark Rushby" <mark@tisolutions.biz>
Date: Wednesday, March 17, 2004, 2:49:48 PM
Subject: bgp local-as
===8<==============Original message text===============
Hello Mark,
Wednesday, March 17, 2004, 2:27:23 PM, you wrote:
MR> Hi Group
MR> I'm having an issue with local-as in BGP.
MR> r2
MR> |
MR> |
MR> r5
MR> R2 and R5 are connected via a serial p2p which has layer 3
MR> connectivity. I basically trying to get r2 to form adj with r5
MR> using a local-as of 5 instead of as 5678. I have done this before
MR> without any problems. I cannot seem to find the fault.
MR> TIA
MR> Mark
MR> R2
MR> router bgp 12
MR> no synchronization
MR> bgp router-id 192.168.2.2
MR> bgp log-neighbor-changes
MR> neighbor 192.168.1.1 remote-as 12
MR> neighbor 192.168.1.1 update-source Loopback0
MR> neighbor 192.168.5.5 remote-as 5
MR> neighbor 192.168.5.5 ebgp-multihop 5
MR> neighbor 192.168.5.5 update-source Loopback0
MR> no auto-summary
MR> R2#
MR> 00:09:01: %BGP-3-NOTIFICATION: received from neighbor
MR> 192.168.5.5 2/3 (BGP identifier wron
MR> g) 4 bytes C0A80202
MR> R2#sh ver
MR> Cisco Internetwork Operating System Software
MR> IOS (tm) 2500 Software (C2500-JS-L), Version 12.2(7a), RELEASE SOFTWARE (fc2)
MR> Copyright (c) 1986-2002 by cisco Systems, Inc.
MR> Compiled Thu 21-Feb-02 01:22 by pwade
MR> Image text-base: 0x03079498, data-base: 0x00001000
MR> ROM: System Bootstrap, Version 5.2(8a), RELEASE SOFTWARE
MR> BOOTLDR: 3000 Bootstrap Software (IGS-RXBOOT), Version
MR> 10.2(8a), RELEASE SOFTWARE (fc1)
MR> R2 uptime is 15 minutes
MR> System returned to ROM by power-on
MR> System image file is "flash:/c2500-js-l.122-7a.bin"
MR> cisco 2516 (68030) processor (revision B) with 16384K/2048K bytes of memory.
MR> Processor board ID 02006311, with hardware revision 00000000
MR> Bridging software.
MR> X.25 software, Version 3.0.0.
MR> SuperLAT software (copyright 1990 by Meridian Technology Corp).
MR> TN3270 Emulation software.
MR> Basic Rate ISDN software, Version 1.1.
MR> 1 Ethernet/IEEE 802.3 interface(s)
MR> 14 Ethernet/IEEE 802.3 repeater port(s)
MR> --More--
MR> 00:15:30: %BGP-3-NOTIFICATION: received from neighbor
MR> 192.168.5.5 2/3 (BGP identifier wron
MR> g) 4 bytes C0A80202
MR> 2 Serial network interface(s)
MR> 1 ISDN Basic Rate interface(s)
MR> 32K bytes of non-volatile configuration memory.
MR> 16384K bytes of processor board System flash (Read ONLY)
MR> Configuration register is 0x2102
MR> R5
MR> router bgp 5678
MR> no synchronization
MR> bgp router-id 192.168.2.2
MR> bgp cluster-id 3232236805
MR> bgp log-neighbor-changes
MR> neighbor 5678 peer-group
MR> neighbor 5678 remote-as 5678
MR> neighbor 5678 update-source Loopback0
MR> neighbor 192.168.2.2 remote-as 12
MR> neighbor 192.168.2.2 local-as 5
MR> neighbor 192.168.2.2 ebgp-multihop 2
MR> neighbor 192.168.2.2 update-source Loopback0
MR> neighbor 192.168.4.4 remote-as 4
MR> neighbor 192.168.4.4 ebgp-multihop 5
MR> neighbor 192.168.4.4 update-source Loopback0
MR> neighbor 192.168.6.6 peer-group 5678
MR> neighbor 192.168.7.7 peer-group 5678
MR> no auto-summary
MR> !
MR> 00:10:32: %BGP-3-NOTIFICATION: sent to neighbor 192.168.2.2 2/3 (BGP identifier wrong) 4 b
MR> ytes C0A80202
MR> R5#sh vers
MR> Cisco Internetwork Operating System Software
MR> IOS (tm) 2500 Software (C2500-JS-L), Version 12.2(7a), RELEASE SOFTWARE (fc2)
MR> Copyright (c) 1986-2002 by cisco Systems, Inc.
MR> Compiled Thu 21-Feb-02 01:22 by pwade
MR> Image text-base: 0x03079498, data-base: 0x00001000
MR> ROM: System Bootstrap, Version 11.0(10c), SOFTWARE
MR> BOOTLDR: 3000 Bootstrap Software (IGS-BOOT-R), Version
MR> 11.0(10c), RELEASE SOFTWARE (fc1)
MR> R5 uptime is 15 minutes
MR> System returned to ROM by power-on
MR> System image file is "flash:/c2500-js-l.122-7a.bin"
MR> cisco 2500 (68030) processor (revision N) with 14336K/2048K bytes of memory.
MR> Processor board ID 06177069, with hardware revision 00000001
MR> Bridging software.
MR> X.25 software, Version 3.0.0.
MR> SuperLAT software (copyright 1990 by Meridian Technology Corp).
MR> TN3270 Emulation software.
MR> Basic Rate ISDN software, Version 1.1.
MR> 1 Ethernet/IEEE 802.3 interface(s)
MR> 2 Serial network interface(s)
MR> 1 ISDN Basic Rate interface(s)
MR> 32K bytes of non-volatile configuration memory.
MR> 16384K bytes of processor board System flash (Read ONLY)
MR> Configuration register is 0x2102
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Your BGP RID's are equal, they MUST be different.
-- Best regards, Adel, CCIE# 12037 mailto:adel@netmasterclass.net
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