[c-nsp] Strange behavior in a Cisco CPE

[Troy Beisigl]

Hi All,

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?

Nothing shows up in the logs and we have rebooted it with no  
resolution to the problem. Pings to and through the router from  
outside never stop or drop when this happens either, but it is causing  
problems with QoS for VoIP. CPU load is nothing and RAM is fine.

#sh proc cpu
CPU utilization for five seconds: 0%/0%; one minute: 1%; five minutes:  
2%

#sh mem
                 Head    Total(b)     Used(b)     Free(b)   Lowest(b)   
Largest(b)
Processor   80A9C858     3134376     1932072     1202304      
1024128     1089528
       I/O     D99C00     2515976     1661620      854356       
854356      854300

Anyone have any ideas?


Thanks.

-Troy