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New Member

Serial interfaces problem after 7513 reboots

Hi all,

Everything started when we need to power down the network equipments for a electrical maintenance. We use a 7513 Cisco router to concentrate the majority of wan connections (serials). When the 7513 router starts one of T1 connections shows an intermittence communication with the remote location. A few days later this situation affected 3 more T1. At this point we found a problem related with the serial interfaces and moved the connection to a DS3 interface, although this affected DS3's T1s. Another day we had the same situation with other interfaces, in this case the serials showed up/downs.

what's going on? Exist a hardware/ software problem?

Here the config versio info. Any other info, please show me:

Cisco Internetwork Operating System Software

IOS (tm) RSP Software (RSP-ISV-M), Version 12.0(7)T, RELEASE SOFTWARE (fc2)

Copyright (c) 1986-1999 by cisco Systems, Inc.

Compiled Mon 06-Dec-99 18:30 by phanguye

Image text-base: 0x60010908, data-base: 0x60F5A000

ROM: System Bootstrap, Version 12.0(10r)S1, RELEASE SOFTWARE (fc1)

c7513 uptime is 4 days, 1 hour, 19 minutes

System returned to ROM by reload at 08:43:30 UTC Fri Nov 28 2003

System restarted at 08:42:57 UTC Fri Nov 28 2003

System image file is "slot0:rsp-isv-mz.120-7.T.bin"

cisco RSP4 (R5000) processor with 262144K/2072K bytes of memory.

R5000 CPU at 200Mhz, Implementation 35, Rev 2.1, 512KB L2 Cache

Last reset from power-on

G.703/E1 software, Version 1.0.

G.703/JT2 software, Version 1.0.

X.25 software, Version 3.0.0.

Bridging software.

Primary Rate ISDN software, Version 1.1.

Chassis Interface.

1 FSIP controller (8 Serial).

2 SMIP controllers (4 T1).

3 VIP2 controllers (8 Serial)(2 T1)(1 Fddi)(1 Channelized T3).

1 FEIP controller (2 FastEthernet).

2 FastEthernet/IEEE 802.3 interface(s)

66 Serial network interface(s)

1 FDDI network interface(s)

4 Channelized T1/PRI port(s)

1 Channelized T3 port(s)

123K bytes of non-volatile configuration memory.

16384K bytes of Flash PCMCIA card at slot 0 (Sector size 128K).

16384K bytes of Flash internal SIMM (Sector size 256K).

Slave in slot 6 is running Cisco Internetwork Operating System Software

IOS (tm) RSP Software (RSP-DW-M), Version 12.0(7)T, RELEASE SOFTWARE (fc2)

Copyright (c) 1986-1999 by cisco Systems, Inc.

Compiled Mon 06-Dec-99 18:44 by phanguye

Slave: Loaded from system

Slave: cisco RSP4 (R5000) processor with 262144K bytes of memory.

Configuration register is 0x102

3 REPLIES
Bronze

Re: Serial interfaces problem after 7513 reboots

It doesn't sound like a software problem. Either you have a hardware issue with the serial interfaces or a problem in the Telco network.

New Member

Re: Serial interfaces problem after 7513 reboots

We are a Telco too. The Toll room's guys don't see any problem. How can I test if there is a hardware or Telco issue? How can i'am certain to decide purchasing new serial interfaces.

I'm worry to reset the router again and have the same situation on the last channelized T3 ports we're using.

Thanks in advance.

New Member

Re: Serial interfaces problem after 7513 reboots

Hi,

Here are some useful links if you wanted to isolate the problem on the router's serial interface.

Troubleshooting serial lines:

http://www.cisco.com/univercd/cc/td/doc/cisintwk/itg_v1/tr1915.htm

Loopback tests for T-1/56k lines:

http://www.cisco.com/en/US/customer/tech/tk713/tk628/technologies_tech_note09186a00800a754b.shtml

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