I have a Cisco 2901 with the 4port gigabit ethernet switch module that I'm trying to get configured to have a seperate subnet for each port. So far I have it set up so each subnet is a vlan, then on each port I use the switchport access vlan command to tell it which subnet I want that port to be on. However, there is one port that I need to have 2 subnets on. The way I found to do that was to use switchport trunking on that port, but it doesn't seem to be working properly.
Can someone show me how they would configure this? Right now I have vlan 101 as x.x.x.17/28 and vlan 103 as x.x.x.53/30. I think where I'm getting hung up is the proper association between the physical port and the vlan subnets.
what you got behind that port another router or switch? have this in mind, VLANs are a layer 2 implementation, and have nothing to do with ip subnets, when ur physical interface is a member of VLAN X, it only comunicates with switch ports in VLAN X accross the network, regardless of the Layer 3 ip address, which of course that is something to be considered too. but all im trying to say is that, Layer 2 is a whole different level that Layer 3.
a switchport can only belong to one vlan at a time. trunk ports can carry traffic from different vlans, but there must be another trunk capable port at the other end.
at last; we might use a certain ip subnet across a vlan, but essentially thats not mandatory. Layer 2 and Layer 3! different
We are pleased to announce availability of Beta software for 16.6.3. 16.6.3 will be the second rebuild on the 16.6 release train targeted towards Catalyst 9500/9400/9300/3850/3650 switching platforms. We are looking for early feedback from custome...