Management address(es)

Answered Question
Dec 23rd, 2008

The below switch is connect to 6500 switch over a dot1q trunk link. The 6500 has serveral SVI interfaces, and the current management interface is 136.206.9.254(VLAN 9).


How do I change the management interface to use another SVI??


note: The native LAN is 115.



----------------------------

sh cdp ne details


Device ID: xxxxxx

Entry address(es):

IP address: 136.206.9.254

Platform: cisco WS-C6509,

Interface: GigabitEthernet0/49,

Port ID (outgoing port): GigabitEthernet3/13

Holdtime : 129 sec


advertisement version: 2

VTP Management Domain: 'xxxx'

Native VLAN: 115

Duplex: full

Management address(es):

IP address: 136.206.9.254

Correct Answer by Joe Clarke about 8 years 2 months ago

The management IP addresses are typically used for clustered switches. This field tells the neighbors by which address this switch should be managed (i.e. using SNMP). For cluster members, this is the IP address of the cluster commander.


For non-clustered devices, the algorithm works as follows:


* If the interface has its own IP, use that.

* If the interface is a trunk, use IP of the native VLAN if one exists.

* If the interface is unnumbered, use the IP from the unnumbered source interface.

* Use the switch's global IP address if it exists.

* Use the first IP address configured on the box.


Newer IOSes also support the "cdp source-interface" command which can be used to explicitly specify a CDP IP address.

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Correct Answer
Joe Clarke Tue, 12/23/2008 - 10:20

The management IP addresses are typically used for clustered switches. This field tells the neighbors by which address this switch should be managed (i.e. using SNMP). For cluster members, this is the IP address of the cluster commander.


For non-clustered devices, the algorithm works as follows:


* If the interface has its own IP, use that.

* If the interface is a trunk, use IP of the native VLAN if one exists.

* If the interface is unnumbered, use the IP from the unnumbered source interface.

* Use the switch's global IP address if it exists.

* Use the first IP address configured on the box.


Newer IOSes also support the "cdp source-interface" command which can be used to explicitly specify a CDP IP address.

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