RE: [nsp] EIGRP flapping

From: Stephane Perez (perezs@nortelnetworks.com)
Date: Thu Apr 11 2002 - 06:55:30 EDT


Hi Florian,

 Just a quick question, have you Keepalive enabled on only one side, because
according to your logs, the EIGRP is bouncing because of the Serial
interface does.

 Please do not hesitate to contact me for any further informations.

regards

----------------------------------------------------------------------------
----------------------------------------------------------------------------
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PEREZ Stephane
Carrier IP Specialist, Shasta GTS
Nortel Networks
ATS IP Core Infrastructure
25, allee Pierre Ziller
06560 Valbonne, FRANCE
Phone: +33 4 92 96 18 05 Mail : mailto:perezs@nortelnetworks.com
Fax : +33 4 92 96 16 68 www : http://www.nortelnetworks.com
Esn : 296-1805 Intranet :
http://hector.europe.nortel.com
ICQ : 120356046

-----Original Message-----
From: Florin Florian [mailto:florin@Cluj.RoEdu.Net]
Sent: Thursday, April 11, 2002 12:39 PM
To: cisco-nsp@puck.nether.net
Subject: [nsp] EIGRP flapping

Hi ,

My router communicate with another router over serial link, with EIGRP.
The problem consist in EIGRP flapping and my backbone interface is up and
down, frecvently...

Apr 7 12:25:13 router 272: 01:07:26: %LINEPROTO-5-UPDOWN: Line protocol
on Interface Serial0/1/0, changed state to down
Apr 7 12:25:14 router 273: 01:07:27: %LINK-3-UPDOWN: Interface
Serial0/1/0, changed state to up
Apr 7 12:25:14 router 274: 01:07:28: %LINEPROTO-5-UPDOWN: Line protocol
on Interface Serial0/1/0, changed state to up
Apr 7 12:26:02 router 275: 01:08:15: %DUAL-5-NBRCHANGE: IP-EIGRP my AS:
Neighbor x.x.x.x (Serial0/1/0) is down: peer restarted
Apr 7 12:26:02 router 276: 01:08:15: %DUAL-5-NBRCHANGE: IP-EIGRP my AS:
Neighbor x.x.x.x (Serial0/1/0) is up: new adjacency
Apr 7 12:26:13 router 277: 01:08:26: %LINEPROTO-5-UPDOWN: Line protocol
on Interface Serial0/1/0, changed state to down
Apr 7 12:26:14 router 278: 01:08:27: %LINK-3-UPDOWN: Interface
Serial0/1/0, changed state to up
Apr 7 12:26:14 router 279: 01:08:28: %LINEPROTO-5-UPDOWN: Line protocol
on Interface Serial0/1/0, changed state to up
Apr 7 12:31:02 router 282: 01:13:15: %DUAL-5-NBRCHANGE: IP-EIGRP my AS:
Neighbor x.x.x.x (Serial0/1/0) is down: peer restarted
Apr 7 12:31:04 router 283: 01:13:16: %DUAL-5-NBRCHANGE: IP-EIGRP my AS:
Neighbor x.x.x.x (Serial0/1/0) is up: new adjacency
Apr 7 12:31:13 router 284: 01:13:26: %LINEPROTO-5-UPDOWN: Line protocol
on Interface Serial0/1/0, changed state to down

Last week I introduced a new VIP 4-80 controller in the router CISCO
7513(module 0) :
1 VIP4-80 RM7000 controller (1 FastEthernet)(4 Serial)(2 E1).
 Controller Memory Size: 128 MBytes DRAM, 65536 KBytes SRAM
                Fast-Ethernet PA, 1 ports, 100BaseTX-ISL
                Fast-Serial PA, 4 ports (attention:PA 4T not PA 4T+)

This controllers not function properly with System Bootstrap, Version
11.1(8)CA1, and I proceed to install another bootstrap.
Now I have a new bootloader version 12.2(1) and with work much better.

IOS (tm) RSP Software (RSP-JK9SV-M), Version 12.2(3), RELEASE SOFTWARE
(fc1)
ROM: System Bootstrap, Version 11.1(8)CA1, EARLY DEPLOYMENT RELEASE
SOFTWARE

BOOTLDR: RSP Software (RSP-BOOT-M), Version 12.2(1), RELEASE SOFTWARE
(fc2)

I forget mention it, the backbone line is very full(bandwidth 6M) every
day and night, and mrtg graph don't have Gauss inflection.

router eigrp AS
 variance 4
 redistribute connected route-map match-xxx
 redistribute static route-map match-xxx
 passive-interface FastEthernet5/0/0
 network x.x.x.x
 maximum-paths 6
 default-metric 10000 100 255 1 1500
 no auto-summary
 eigrp log-neighbor-changes

router bgp AS
 no synchronization
 no bgp fast-external-fallover
 bgp log-neighbor-changes
 bgp deterministic-med
 aggregate-address x.x.x.x
................
 redistribute connected route-map match-xxx
 redistribute static route-map match-xxx
 redistribute eigrp AS
 neighbor AS ....
............

Why not function properly the backbone links with VIP 4-80 with the PA
4T and the PA - 1FE ISL???
This PA 4T function with VIP 2-40

Thanks in advance.
fflorin



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