4507R-E ethernet module problem

[mo shea]

Hi...

The problem suddenly started today, connecting any new Server/PC to  the 48 port Module (WS-X4648-RJ45V+E) makes the port flapping, but nothing shows on the  log. The flapping is not frequent. The port connects for almost 2  seconds, then stays offline for 1 minute, again connects for 2 seconds,  stays offline for 1 minute and so on. Even if we disconnect an already  working PC and connect it back, the problem occurs on its port.

There is no special configuration on the ports affected, only switchport mode access and the access vlan. We do not have any PoE devices as yet.

We tested by directly connecting a laptop to the switch via Ethernet and console ports

We did not reboot the module because some live servers  are connected and we are afraid that the problem might spread to the  other ports after the reset.

Relevant sho ver for this switch is  below

Cisco IOS Software, Catalyst 4500 L3 Switch Software (cat4500e-ENTSERVICESK9-M),
Version 12.2(44)SG1, RELEASE SOFTWARE (fc1)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2008 by Cisco Systems, Inc.
Compiled Wed 09-Jul-08 15:19 by prod_rel_team
Image text-base: 0x10000000, data-base: 0x122CB9C8

ROM: 12.2(44r)SG5
Darkside Revision 4, Jawa Revision 20, Tatooine Revision 140, Forerunner Revisio
n 1.74

INTERNET_CORE_4506 uptime is 42 weeks, 2 days, 23 hours, 8 minutes
Uptime for this control processor is 42 weeks, 2 days, 23 hours, 8 minutes
System returned to ROM by reload
System image file is "bootflash:cat4500e-entservicesk9-mz.122-44.SG1.bin"

cisco WS-C4507R-E (MPC8548) processor (revision 6) with 524288K bytes of memory.
Processor board ID FOX1302G9XW
MPC8548 CPU at 1.33GHz, Supervisor 6-E
Last reset from Reload
8 Virtual Ethernet interfaces
76 Gigabit Ethernet interfaces
2 Ten Gigabit Ethernet interfaces
511K bytes of non-volatile configuration memory.

Configuration register is 0x2101

And here is the sho module

Mod Ports Card Type                                                                 Model                              
---+-----+--------------------------------------                                        +------------------                        
1    24  1000BaseX (SFP)                                                      WS-X4624-SFP-E    
2    48  10/100/1000BaseT Premium POE E Series                 WS-X4648-RJ45V+E  
4     6  Sup 6-E 10GE (X2), 1000BaseX (SFP)                         WS-X45-SUP6-E 

And here is sho power

Power                                                                       Fan      Inline
Supply  Model No          Type                 Status        Sensor   Status
------  ----------------  ---------                            -----------         -------  -------
PS1     PWR-C45-2800AC    AC 2800W   good         good     good
PS2     PWR-C45-2800AC    AC 2800W   good         good     good

Power supplies needed by system    : 1
Power supplies currently available : 2

Power Summary                      Maximum
(in Watts)              Used     Available
----------------------   ----     ---------
System Power (12V)        537        1360
Inline Power (-50V)         0        1400
Backplane Power (3.3V)     40          40
----------------------   ----     ---------
Total                     577        2800

All help is appreciated

Thanks

[IAN WHITMORE]

Have you checked for bugs in Cisco?

Does it happen on any other port?

Could be a fault port or a bug. It's strange though that a bug would affect only 1 port so it's more likely a faulty port. Of course a restart and IOS upgrade might be in order so plan your downtime.

regards,

Ian

[Leo Laohoo]

How many ports are affected?

Have you tried using a TDR from the switch?  The commands combo are:

test cable tdr interface

... wait for 10 seconds ...

sh cable tdr interface

[mo shea]

Thanks for the replies,

Actually more than one port is affected. Any port that is disconnected and connected back doesnt come up at all. I tried to search for a bug for this specific module but could not find any. I have asked our Cisco partner to follow up with Cisco TAC (we have shared support).

I havent done TDR from the switch, but I have tried my best to eliminate any physical layer problems (change cables, laptops, direct switch connection, etc. )

Thanks again

[IAN WHITMORE]

Well the bug might not be the module (more than likely not because it would be a harware issue) but could be an IOS related bug. Or power perhaps?

Good luck with it.

Ian

[Shashank Singh]

Hi,

Please check CSCsv15915 and see if you may be hitting this.

http://tools.cisco.com/Support/BugToolKit/search/getBugDetails.do?method=fetchBugDetails&bugId=CSCsv15915

Regards,

Shashank

[mo shea]

I have guest account only, I will forward this bug ID to our partner.

Thanks again