WAN to LAN

[amh4y0001]

Hi,

Is it possible to combine tWAN ports on Cisco ISR to work as LAN?

[Giuseppe Larosa]

Hello @amh4y0001 ,

WAN ports are routed ports and they can be used as internet uplinks.

IF you need additional LAN ports the best choice is to add an 8 ports LAN switch to be connected downstream one LAN port of the router.

Hope to help

Giuseppe

[amh4y0001]

Hi and thanks for reply. So if I understand correctly, WAN ports can't be used as LAN?

My bad, I didn't quite get "8 ports LAN switch to be connected downstream one LAN port of the router".

[Giuseppe Larosa · Accepted solution]

Hello @amh4y0001 ,

your understanding is correct on branch small routers these WAN ports are dedicated for routing with the internet or whatever you want to connect to.

Hope to help

Giuseppe

[amh4y0001]

Thanks for confirmation.

[Joseph W. Doherty]

Depends on what you're trying to accomplish. (I also assume the "WAN" port is copper/fiber Ethernet.)

Many small router WAN Ethernet ports cannot do "switch" L2 (doesn't always mean you cannot connect them on a LAN) and/or offer "special" features more useful to WAN than LAN, such as enhanced QoS and/or additional buffer resources (again, doesn't always mean cannot be used with a Ethernet LAN). (BTW, this is somewhat like asking how a switch with "uplink" ports can be used.)

You also mention "combine" ports. Much depends on how you wish to combine and what you're going to connect to.