[c-nsp] Strange behavior in a Cisco CPE

[Smales, Robert]

Troy Beisigl wrote:

> We are seeing some really strange behavior on a Cisco 1721 CPE. It  
> acts like we are having a connectivity problem with packet loss or  
> very high latency. There is about 86Kbps to 350Kbps of 
> traffic on it.  
> It has  WIC-1DSU-T1 card and is doing just basic static 
> routes with a  
> Full T1. There are no errors on the T1. If I log into the router and  
> try to send say 1000 icmp packets to something on the other 
> end of the  
> T1, it will go for few packets and then pause for about 15 to 20  
> seconds before continuing right where it stopped. It never drops any  
> packets, just freezes and then continues. It does this about every  
> minute or 2. Has anyone seen this before?
> 

How are you accessing the router? If you are telnetting in remotely, it could be that what you are seeing are delays in the information being transmitted from the router to your terminal, rather than delay in the router transmitting the icmp packets to the destination.

Just a thought.

Robert

Robert Smales                                                
IP Provide Engineer
Cable&Wireless Europe, Asia & US
www.cw.com                              

This e-mail has been scanned for viruses by the Cable & Wireless e-mail security system - powered by MessageLabs. For more information on a proactive managed e-mail security service, visit http://www.cw.com/uk/emailprotection/ 

The information contained in this e-mail is confidential and may also be subject to legal privilege. It is intended only for the recipient(s) named above. If you are not named above as a recipient, you must not read, copy, disclose, forward or otherwise use the information contained in this email. If you have received this e-mail in error, please notify the sender (whose contact details are above) immediately by reply e-mail and delete the message and any attachments without retaining any copies.
 
Cable and Wireless plc 
Registered in England and Wales.Company Number 238525 
Registered office: 3rd Floor, 26 Red Lion Square, London WC1R 4HQ