CDP neighbor problem with Cisco 1721 (IOS 12.3)

kevintang · ‎11-06-2003

Hi,

I just had a new Cisco 1721 with IOS version 12.3. The problem is that the router see themself as CDP neighbor.

Is it a bug in this new IOS?

Show ver, show interface and sh cdp nei det are here.

Router#sh ver

Cisco Internetwork Operating System Software

IOS (tm) C1700 Software (C1700-Y7-M), Version 12.3(1a), RELEASE SOFTWARE (fc1)

Compiled Fri 06-Jun-03 19:50 by dchih

Image text-base: 0x80008120, data-base: 0x80AFBAA0

ROM: System Bootstrap, Version 12.2(7r)XM1, RELEASE SOFTWARE (fc1)

Router uptime is 1 week, 1 day, 23 hours, 32 minutes

System returned to ROM by power-on

System restarted at 11:15:41 NZDT Wed Oct 29 2003

System image file is "flash:c1700-y7-mz.123-1a.bin"

cisco 1721 (MPC860P) processor (revision 0x200) with 54917K/10619K bytes of memo

ry.

Processor board ID FOC073712VS (1401315277), with hardware revision 0000

MPC860P processor: part number 5, mask 2

Bridging software.

X.25 software, Version 3.0.0.

1 FastEthernet/IEEE 802.3 interface(s)

1 Serial(sync/async) network interface(s)

32K bytes of non-volatile configuration memory.

32768K bytes of processor board System flash (Read/Write)

Configuration register is 0x2102

=======================================

Router#sh run int f0

interface FastEthernet0

ip address 10.154.140.1 255.255.255.0

speed 10

half-duplex

=======================================

Router#sh cdp nei det

-------------------------

Device ID: Router

Entry address(es):

IP address: 10.154.140.1

Platform: cisco 1721, Capabilities: Router

Interface: FastEthernet0, Port ID (outgoing port): FastEthernet0

Holdtime : 143 sec

Version :

Cisco Internetwork Operating System Software

IOS (tm) C1700 Software (C1700-Y7-M), Version 12.3(1a), RELEASE SOFTWARE (fc1)

Compiled Fri 06-Jun-03 19:50 by dchih

advertisement version: 2

Duplex: half

Router#

Georg Pauwen · ‎11-07-2003

Hello Kevin,

I checked for a bug but there is none describing your problem. Is the entry still there after you do a clear cdp table ?

Regards,

Georg

kevintang · ‎11-09-2003

Hi, Georg

I disabled the cdp enable on that interface for last two days. After I saw you reply, then I enabled the cdp for F0 interface. Now I do not have cdp neighbor problem, I did clear cdp table, still OK.

That interface connects to customer LAN PCs. I will keep monitoring it for a few days.

Thank you very much , Georg.

kevintang · ‎11-11-2003

Hi, Georg

I have been monitoring the router for last a few days. No more CDP neighbor problem. All is working OK now.

Kevin

Georg Pauwen · ‎11-11-2003

Hi Kevin,

sounds good, I started thinking that the router might have psychological problems, seeing himself as his own neighbor :)

Regards,

Georg