Wednesday, November 7, 2018

Cisco switch - routed interface with vlan subinterfaces?

In juniper world you can run flexible-ethernet-services on a router interface and then have subinterfaces which have an IP addresses, or subinterfaces which can be part of a vpls(so logically acting as layer 2 port.

Is there a Cisco equivalent? In this use case, we have an MX router which is connecting to a Cisco 9300 switch via tengig fibre.

We are passing a number of vlans through from a carrier, passing through an MX (vpls) and going into the switch.

We also have a a requirement for this switch to be layer3, so will have a number of point to point routed interfaces connected to our MX routers.

Basically I'm looking for a solution which saves us running extra fibre from our MX as Ports are getting scarce. Ideally I would like to be able to have a switch port acting as a routed port with subinterfaces and also have one of those subinterfaces acting as a bog standard switch port

Impossible or not?



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