01-10-2008 05:16 AM
Hi everybody,
I've been trying to set the gateway ip-address of a Catalyst 2950 via SNMP:
snmpset -c geheim -v 2c myhost .1.3.6.1.2.1.16.19.12.0 a 192.168.1.254
Error in packet.
Reason: commitFailed
Failed object: 16.19.12.0
Debugging on the 2950:
#debug snmp packets
SNMP packet debugging is on
Jan 10 13:42:17: SNMP: Packet received via UDP from 192.168.0.1 on Vlan1
Jan 10 13:42:17: SNMP: Set request, reqid 1804646304, errstat 0, erridx 0
rmon.19.12.0 = 192.168.1.254
Jan 10 13:42:17:
Incoming SNMP packet
Jan 10 13:42:17: v1 packet
Jan 10 13:42:17: community string: geheim
Jan 10 13:42:17: SNMP: Response, reqid 1804646304, errstat 14, erridx 1
rmon.19.12.0 = 192.168.1.254
Jan 10 13:42:17: SNMP: Packet sent via UDP to 192.168.0.1
The variable's (netDefaultGateway.0) permission is "read-create".
Is it not allowed to set this variable or am I doing something wrong?
Thanks in advance
Rolf
01-10-2008 07:07 AM
I don't think this is the way to set the default gateway on a Cisco device, since this OID you're trying to set is part of the RMON2-MIB. In fact, I don't know if it's even possible to set the default gateway via SNMP. Has this method worked for you before?
01-10-2008 07:48 AM
No, I'm trying it for the first time like that.
I can't access the switch and changing the GW would be a solution. By using SNMP I can configure changes without needing the way back from the switch to my location, that's the reason...
The description of this variable says
"The IP Address of the default gateway. If this value is
undefined or unknown, it shall have the value 0.0.0.0."
which sounds good for me but I'm not sure if I can change it via SNMP.
01-10-2008 09:31 AM
It looks like there is no way to set this via snmp.
From what I see all the write capabilities on objects allow route entries (such as default route) to deleted, but not modified.
You can only modify the routing table using the CLI or downloading new configuration files to the device. The second option is possible via this doc:
http://www.cisco.com/en/US/tech/tk648/tk362/technologies_configuration_example09186a0080094aa6.shtml
01-10-2008 04:09 PM
Perhaps it can be set via SNMP using the CONFIG MIB - I think you're right about the MIB-II set...
Paul
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