In the 3550 you setup the switch's internal management vlan via "Interface vlan x" and specify an ip address. However, you issue the exact same commands for a routed SVI/Vlan. How do you tell the switch which vlan is his internal management vlan, and which are layer 3 routed vlans??
Thanks for that info. However, your managment vlan is vlan1 by default, it does not have to be vlan1. If you changed it to say vlan5, how does the cat 3550 know which vlan is his mgmt vlan? I thought there would be some sort of extra command, but I can't see any.
My organization did not use the default mgt vlan 1 either. We selected another vlan as our mgt vlan but all of our mgt vlans are using 10.x.x. (layer 2) non public ip address. They communicate because they are all using the same subnet a non public address on the same subnet. The other vlans are using a Class B & C addresses. There is a static route in our core Cisco7206 pointing to each device.
I've never come across a Cisco switch that differentiated between a "management" VLAN and a standard VLAN. If you don't want the switch to route to or from the management VLAN, I think you're stuck using access lists or policy routing.
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