topic Re: IDSM-2 slow file copy in Network Security

IDSM-2 slow file copy

binelipetrov — Sun, 10 Mar 2019 11:49:18 GMT

Hi, I have FWSM and IDSM/2 module on 6500 switch in my network, and we have issue with file transfer between some machines. When server is behind IPS, transfer is very slow, 40x lower then in situation when server is only in VRF/FWSM - without IPS. Any idea? Thanks in advance

Re: IDSM-2 slow file copy

andrey.dugin — Wed, 11 Nov 2009 09:45:56 GMT

Check your IPS interfaces load. May be it is overloaded.

Re: IDSM-2 slow file copy

binelipetrov — Wed, 11 Nov 2009 09:50:42 GMT

In which way can I do it? Show interface command via console only showing number of packets per VLAN group. The same thing via Web GUI - only cumulative number of bytes

Thanks in advance

Re: IDSM-2 slow file copy

andrey.dugin — Wed, 11 Nov 2009 14:07:49 GMT

SNMP statistics, MRTG for example.

You may monitor IDSM2 inline interfaces or switch ports connected to IDSM2.

Re: IDSM-2 slow file copy

rhermes — Wed, 11 Nov 2009 16:54:56 GMT

an overworked sensor can certainly be a cause of problems. The easiest way to determine you sensor's health is to look at the % missed packets and CPU utilization from the CLI:

sh int (%missed pactets)

sh stat host (CPU)

If those don;t look like the cause of your problem, a likely cause is the normalizer engine sigs. These sigs will drop packets it doesn't like and not give you an alert. Check what sigs are fireing when you're experiencing this problem:

show event past 01:00 | include (whatever you're looking for)