Layer -3 switching

Unanswered Question
Dec 3rd, 2008

In my company. We have a 4503 series switch. Tow vlan defined in this switch. Vlan 10.10.16.2 255.255.255.128 and other Vlan 2 10.10.16.130 255.255.255.128 and default gateway is 10.10.16.1. Default gateway is of router. and i have a one link of isp Its ip is 202.131.123.218/219/220 subnet mask is 255.255.255.248 and default gateway is 202.131.123.217 and dns of isp is 202.131.104.2 and 202.131.104.3 So please suggest me I want to terminate this link in switch.

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Giuseppe Larosa Wed, 12/03/2008 - 11:40

Hello Pradip,

just create a third vlan


config


vlan 3

name ISP


put one or more ports in this vlan


then if you want to use the switch to route between internal lans and ISP VLan


you need to create an SVI


interface vlan3

ip address one of ISP subnet

! no shut

no shut


notice if instead you need to use the ports as L2 switch you can do it there is no problem in this:

you can use the L3 features in some vlans and not in other ones this is left to your choice


Note:

It would be wise to hide the public addresses

I would suggest you to edit your post

mask with x.y. the first two bytes this forum can be read by everyone


Hope to help

Giuseppe


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