04-28-2008 11:31 PM - edited 03-05-2019 10:40 PM
Hi,
What is the best way of configuration of port between a L3 switch and a router, if the switch is doing the inter-VLAN routing.
04-28-2008 11:41 PM
I would use a P2P link between the switch and router ie.
switch
int fa0/1
no switchport
ip address 192.168.5.1 255.255.255.252
router
int fa0/1
ip address 192.168.5.2 255.255.255.252
then either use static routing or run a routing protocol between the L3 switch and the router.
Jon
04-29-2008 02:01 AM
Hi,
I agree with Jon if I have a layer 3 switch.
I would use a layer 3 connectivity between the switch and the router.
-> Sushil
04-29-2008 11:07 AM
"Best" is, it depends. Normally, most would do as Jon suggests. However, if the L3 switch is the access layer, you might also trunk all its VLANs to the router, effectively placing two routers on the user VLANs. The L3 switch should continue to be the default gateway.
Doing this flattens the routed topology, and negates the advantage of running a routing protocol on the L3 switch or reduces the number of static routes.
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