Cisco 3020 Blade Switch for HP Blade Server

Unanswered Question
Oct 21st, 2007

What is the best practice for managing these switches?

1) Give the fa0 interface an IP address


2) Give VLAN 1 an IP Address

What are the advantages / disadvantages of doing one over the other?

I have this problem too.
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lgijssel Sun, 10/21/2007 - 23:33

For management interfaces, it is important that they are always up and reachable. A physical interface goes down when it's link goes down, a vlan goes down only when the last interface (including trunks) in the vlan goes down.

Therefore, you should not want to configure a physical interface, when it goes down, the whole device becomes unreachable for network management.

Using a vlan for this will give you a higher availability and the option to use redundant paths to your NMS.



astanislaus Mon, 10/22/2007 - 14:29


Thanks. But if the inband network has a problem (for example broadcast storm) then getting to the 3020 switch via inband may be a problem. But via the OA module in the blade server to the interface fa0 may be more reliable under this circumstance for troublesooting the broadcast storm for example.

lgijssel Mon, 10/22/2007 - 21:33

How often do you really expect to experience a broadcast storm?

In a modern and well designed network, chances for this are minimal so you might be planning for something that will never occur.



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