Hello
How many switches does this relate to, How large is your network?
You have various options:
Manually by physically consoling onto each switch
Automatically via management solution such as prime
Manually via remote access onto each switch
The MGT ip address of the switch is only used for the remote administration of the device therefore even if you lose remote connection to the switch then the host connectivity to the network wont be affected.
If you wish to remotely change the MGT vlan of a host switch manually then, The simplistic way would be to access it via the core switch of your network which would have the L3 addressing of the old/new mgt vlan subnets, So when you've change the mgt ip address, You would be able to reestablish remote connection to the new ip address.
The option would involve:
1) Create the new mgt l2/l3 vlan on the core switch
2) Check to make sure the new L2 vlan is propagated to all the other switches throughout your network, via vtp or manually appending it and that this new vlan is allowed to traverse the trunks of those switches
3) Remote access to the host switch via its old mgt ip address and copy/ paste the new configuration onto the switch
4) At this point you should lose connection however you should then be able to re-establish connection via ist new mgt address sourced from the new mgt vlan of the core switch.
5) Lastly check to make sure you can remotely access the switch sourced from a network other then the new mgt vlan, if you cannot then it would be probably due to the default-gateway not being changed or you haven't advertised the addressing of the new mgt vlan into your routing policy
Please rate and mark as an accepted solution if you have found any of the information provided useful.
This then could assist others on these forums to find a valuable answer and broadens the community’s global network.
Kind Regards
Paul
