SNMP Traps sent to Openview - Which level?

[bpotschien]

Hi there,

my Cisco C3500XL Switch (IOS 12.0(5.2)XU) sends many snmp traps to the snmp server.

Here is the config:

snmp-server engineID local XXXX

snmp-server community XXXX RW 1

snmp-server enable traps snmp

snmp-server enable traps config

snmp-server host 1.1.1.1 trap XXXX

The switch also sends link up/down messages. I don't want this.

Can you help me to fix this problem??

Thanks in advance!

[milan.kulik · Accepted solution]

Hi,

AFAIK, there are following commands involved (I'm running 12.0(5)WC8):

1) snmp-server enable traps snmp [authentication] [linkdown] [linkup] [coldstart]

2)int fa0/x

[no] snmp trap link-status (Allow SNMP LINKUP and LINKDOWN traps)

3) snmp-server host 1.1.1.1 trap XXXX [tty] [vlan-membership] [config] [entity] [c2900] [vtp] [cluster] [snmp]

My understanding is:

snmp-server enable traps snmp

enables ALL snmp traps including link up/down.

If you specify only

snmp-server enable traps snmp authentication coldstart

the link up/downs might not be sent.

If it doesn't help, try

no snmp trap link-status

for each interface.

This should definitely stop link up/downs from the interfaces.

Finally you can choose which traps are sent to 1.1.1.1 by using the options in

snmp-server host 1.1.1.1 trap XXXX ....

command.

BTW, I think it's better not to stop link up/down alarms BUT to configure HPOV alarm monitor to LOG ONLY (not to display them but save to the database) these traps.

Regards,

Milan

[bpotschien]

Hi,

the 1) did not resolve my problem. In this IOS the only "snmp-server enable traps snmp" option is "authentication". "Linkdon/Linkup etc." are not possible.

But the 2) resolved my problem :-)

This was exhausting, because this is a 48 port switch and there is no "int range" command...

Ok, thank you!

[milan.kulik]

Well,

ad 1) These options are available in the latest IOS, you need to upgrade to use them.

ad 2) You can use a script to generate the proper command for all necessary ports. I described a UNIX script example in

http://forums.cisco.com/eforum/servlet/NetProf?page=netprof&CommCmd=MB%3Fcmd%3Dpass_through%26location%3Doutline%40%5E1%40%40.ee93dcc/1#selected_message

Regards,

Milan