From: Ivan (ivan@iip.net)
Date: Tue Aug 22 2006 - 13:31:43 ART
Once you have this configured. HSRP and OSPF traps will send to all
snmp-hosts. Try to remove this.
> snmp-server enable traps hsrp
> snmp-server enable traps ospf
On Tuesday 22 August 2006 19:50, allboutcisco wrote:
> Hi group,
>
> I've been doing some verification on my config for snmp. I configured 2
> snmp host on the router to forward traps to, specifically 1 which receives
> only hsrp and the other no specific traps specified. Then i enable traps
> globally for hsrp & ospf. I have always thought or at least assumed that by
> specifying "snmp-server host 141.1.77.100 version 2c CISCO hsrp" that the
> router will only send hsrp-related traps to the NMS 141.1.77.100; but it
> proves otherwise when i did a debug snmp packet.
>
> My config as follows:
> snmp-server host 141.1.7.100 CISCO tty
> snmp-server host 141.1.77.100 version 2c CISCO hsrp
> snmp-server enable traps hsrp
> snmp-server enable traps ospf
>
> My findings are:
> When an event takes place for hsrp & ospf, snmp traps are generated, queued
> & finally sent (well at least from what the debugs say) to both 141.1.7.100
> & 141.1.77.100. To me, it doesn't seem that by tying in a specific trap to
> the snmp host ONLY that specific trap will be sent to it.
>
> My debug output (debug snmp packets & debug ip packet detail)
>
> Rack1R3#
> *Mar 1 15:02:59.707: SNMP: Queuing packet to 141.1.7.100
> *Mar 1 15:02:59.707: SNMP: V1 Trap, ent cHsrpMIBNotificationPrefix, addr
> 141.1.37.3, gentrap 6, spectrap 1 cHsrpGrpEntry.15.3.1 =
> NO_SUCH_INSTANCE_EXCEPTION
> *Mar 1 15:02:59.779: SNMP: Queuing packet to 141.1.77.100
> *Mar 1 15:02:59.783: SNMP: V2 Trap, reqid 22, errstat 0, erridx 0
> sysUpTime.0 = 925530
> snmpTrapOID.0 = cHsrpMIBNotifications.1
> cHsrpGrpEntry.15.3.1 = NO_SUCH_INSTANCE_EXCEPTION
> *Mar 1 15:02:59.959: SNMP: Packet sent via UDP to 141.1.7.100
> *Mar 1 15:02:59.959: IP: tableid=0, s=141.1.37.3 (local), d=141.1.7.100
> (FastEthernet0/0), routed via FIB *Mar 1 15:02:59.959: IP: s=141.1.37.3
> (local), d=141.1.7.100 (FastEthernet0/0), len 93, sending *Mar 1
> 15:02:59.959: UDP src=52433, dst=162
> Rack1R3#
> *Mar 1 15:03:00.035: SNMP: Packet sent via UDP to 141.1.77.100
> *Mar 1 15:03:00.035: IP: tableid=0, s=141.1.37.3 (local), d=141.1.77.100
> (FastEthernet0/0), routed via FIB *Mar 1 15:03:00.035: IP: s=141.1.37.3
> (local), d=141.1.77.100 (FastEthernet0/0), len 118, sending *Mar 1
> 15:03:00.035: UDP src=58747, dst=162
> Rack1R3#
>
>
> Appreciate any inputs on this. Thanks.
>
> -K
>
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-- Ivan
This archive was generated by hypermail 2.1.4 : Fri Sep 01 2006 - 15:41:58 ART