ASA5505 to cascade two switches.

[yvet...@gmail.com]

Hello...

I have lab with ASA 5505 as a router, port 4 and port 6 are configure
at the same internal VLAN subnet, port 6 connect to Switch1 (2960),
port 4 connects to Switch2 (3960), any hosts
connects to Switch1 and Switch2 can connect to each other and to the
internet without problem.

Now, when I reconnect Switch2 to port 23 of Switch1, hosts in Switch2
lost the connection to the rest of the world
except those hosts in the same switch (switch2), that they can
communicate each other.

What needs to be changed when cascade a switch to
another in this configurations?

Thanks,
Yvette.

[Tilman Schmidt]

yvet...@gmail.com schrieb:

> I have lab with ASA 5505 as a router, port 4 and port 6 are configure
> at the same internal VLAN subnet, port 6 connect to Switch1 (2960),
> port 4 connects to Switch2 (3960), any hosts
> connects to Switch1 and Switch2 can connect to each other and to the
> internet without problem.

As it should be.

> Now, when I reconnect Switch2 to port 23 of Switch1, hosts in Switch2
> lost the connection to the rest of the world
> except those hosts in the same switch (switch2), that they can
> communicate each other.

Have you checked the cable between the two, and the link state of
port 23 of Switch1 and the uplink port of Switch2? Did you use a
crossover cable?

> What needs to be changed when cascade a switch to
> another in this configurations?

Nothing, normally. If anything, you might have to *undo* some
configuration you made on the switches and which you neglected
to mention, such as trunking or VLANs.

HTH
T.

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