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ISDN Probrem


I got the following massage and too many output.

Mar  9 01:39:46: BRI0 : start - timer T8 already running

Mar  9 01:39:46: BRI0 : start_t4 - timer T8 already running

Mar  9 01:39:46: BRI0 : start_t4 - timer T4 already running

What it's that massage mean?

In addition,infrequently L2 down on the same router.

The router is using "GRE ove IPsec" with "sa idletimeout" on the ISDN line.

Best Regards,


Hall of Fame Super Gold

Re: ISDN Probrem

The messages are only cosmetic, however which exact IOS are you running ?

Re: ISDN Probrem

Hi, p.bevilacqua

Thank you for your reply.

IOS version is 12.4(4)T3 as following.

Please do me a favor and tell me exactly what does the message mean?

Best Regards,


------------------ show version ------------------

Cisco IOS Software, C181X Software (C181X-ADVIPSERVICESK9-M), Version 12.4(4)T3, RELEASE SOFTWARE (fc3)
Technical Support:
Copyright (c) 1986-2006 by Cisco Systems, Inc.
Compiled Mon 22-May-06 14:25 by kellythw

ROM: System Bootstrap, Version 12.3(8r)YH8, RELEASE SOFTWARE (fc2)

RTB00512 uptime is 3 days, 1 hour, 17 minutes
System returned to ROM by power-on
System restarted at 17:38:53 jst Sat Mar 6 2010
System image file is "flash:c181x-advipservicesk9-mz.124-4.T3.bin"

This product contains cryptographic features and is subject to United
States and local country laws governing import, export, transfer and
use. Delivery of Cisco cryptographic products does not imply
third-party authority to import, export, distribute or use encryption.
Importers, exporters, distributors and users are responsible for
compliance with U.S. and local country laws. By using this product you
agree to comply with applicable laws and regulations. If you are unable
to comply with U.S. and local laws, return this product immediately.

A summary of U.S. laws governing Cisco cryptographic products may be found at:

If you require further assistance please contact us by sending email to

Cisco 1812-J (MPC8500) processor (revision 0x400) with 118784K/12288K bytes of memory.
Processor board ID FHK104414WF, with hardware revision 0000

10 FastEthernet interfaces
1 ISDN Basic Rate interface
31360K bytes of ATA CompactFlash (Read/Write)

Configuration register is 0x2102

Hall of Fame Super Gold

Re: ISDN Probrem

You can update IOS if bothered by message.

It does not mean anything of interest to the user.