Configuring the source IP address for SNMP notifications (CLI)

For more information, see Source IP address for SNMP notifications.

Syntax: 


no snmp-server response-source [dst-ip-of-request | [ipv4-addr | ipv6-addr] | loopback <0-7>]

Specifies the source IP address of the SNMP response PDU. The default SNMP response PDU uses the IP address of the active interface from which the SNMP response was sent as the source IP address.

The no form of the command resets the switch to the default behavior (compliant with rfc-1517).

(Default: Interface IP address)

dst-ip-of-request

Destination IP address of the SNMP request PDU that is used as the source IP address in an SNMP response PDU.

[ipv4-addr | ipv6-addr]

User-defined interface IP address that is used as the source IP address in an SNMP response PDU. Both IPv4 and IPv6 addresses are supported.

loopback <0-7>

IP address configured for the specified loopback interface that is used as the source IP address in an SNMP response PDU. If multiple loopback IP addresses are configured, the lowest alphanumeric address is used.

To use the IP address of the destination interface on which an SNMP request was received as the source IP address in the IP header of SNMP traps and replies, enter the following command: 

switch(config)# snmp-server response-source dst-ip-of-request

Syntax: 


no snmp-server trap-source [ipv4-addr | loopback <0-7>]

Specifies the source IP address to be used for a trap PDU. To configure the switch to use a specified source IP address in generated trap PDUs, enter the snmp-server trap-source command.

The no form of the command resets the switch to the default behavior (compliant with rfc-1517).

(Default: Use the interface IP address in generated trap PDUs)

ipv4-addr

User-defined interface IPv4 address that is used as the source IP address in generated traps. IPv6 addresses are not supported.

loopback <0-7>

P address configured for the specified loopback interface that is used as the source IP address in a generated trap PDU. If multiple loopback IP addresses are configured, the lowest alphanumeric address is used.

NOTE:
When you use the snmp-server response-source and snmp-server trap-source commands, note the following behavior:

  • The snmp-server response-source and snmp-server trap-source commands configure the source IP address for IPv4 interfaces only.

  • You must manually configure the snmp-server response-source value if you wish to change the default user-defined interface IP address that is used as the source IP address in SNMP traps (RFC 1517).

  • The values configured with the snmp-server response-source and snmp-server trap-source commands are applied globally to all interfaces that are sending SNMP responses or SNMP trap PDUs.

  • Only the source IP address field in the IP header of the SNMP response PDU can be changed.

  • Only the source IP address field in the IP header and the SNMPv1 Agent Address field of the SNMP trap PDU can be changed.