VLAN L3 routing on router or switch ?

Answered Question
Mar 26th, 2010

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Hi

Anyone knows the differences to put the VLAN L3 on the Router’s Ethernet port or a switch with L# capabilities ?.

Thank you.

I have this problem too.
0 votes
Correct Answer by Reza Sharifi about 6 years 10 months ago

Hi Luis,

On the switch you would need to create an SVI and the IP to it.  On the router you would need to create a sub-interface and the IP to it.

HTH

Reza

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Correct Answer
Reza Sharifi Fri, 03/26/2010 - 08:27

Hi Luis,

On the switch you would need to create an SVI and the IP to it.  On the router you would need to create a sub-interface and the IP to it.

HTH

Reza

Jon Marshall Fri, 03/26/2010 - 08:36

lveraza2010 wrote:

The performance is the same ?.

No it isn't because a L3 switch routes packets in hardware and a router routes packet in software so with a L3 switch and a router costing roughly the same the L3 switch will vastly outperform the router.

Jon

milan.kulik Fri, 03/26/2010 - 09:24

On the other hand, L3 switches usually don't provide all advanced routing features (NAT, e.g.).

BR,

Milan

robmccam1 Sat, 03/27/2010 - 08:07

The two technologies grew together.  The router however tends to offer more WAN interface solutions (WIC) than the L3 switch.  There is also the advantage of the logical abstraction that the router provides over the L3 switch.

ucsd92126 Wed, 03/31/2010 - 14:40

What about firewall ASA and L3 switch?  I plan to add a new VLAN but not sure where to put the routing.

Thanks

Reza Sharifi Wed, 03/31/2010 - 15:25

Hi Nelson,

If your switch is a layer-3 switch then add the svi for the new vlan on the switch.

HTH

Reza

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