Confused about L3 Switch

Answered Question
Aug 15th, 2007
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Hello!


Is the Cisco L3 switch can route different subnets (without a router)? or do i still need a router in order to route packets at different subnets?


Thank you!

Correct Answer by royalblues about 9 years 8 months ago

Friend,


L3 switch is practically a router and can route packets for different subnets.


Inter vlan routing can switch packets between the different VLANs.

It can also be configured with routing protocols to route subnets downstream to that device


HTH

Narayan

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Correct Answer
royalblues Wed, 08/15/2007 - 13:49
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Friend,


L3 switch is practically a router and can route packets for different subnets.


Inter vlan routing can switch packets between the different VLANs.

It can also be configured with routing protocols to route subnets downstream to that device


HTH

Narayan

paolo bevilacqua Wed, 08/15/2007 - 13:49
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No need for a router for basic and intermediate routing. A L3 switch does many things a router does, and some things a router doesn't.

sundar.palaniappan Wed, 08/15/2007 - 13:50
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Yes, as it says it's a layer 3 (router) switch. It can route traffic between networks just like how a router does.


Actually layer 3 switch is more efficient than a router when it comes to inter-vlan routing because of MLS and other features that a layer 3 switch has to offer.


HTH


Sundar

Rejohn Ronald Cuares Wed, 08/15/2007 - 22:27
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Actually, we are using a single L2/L3 switch that has different subnets assigned in each VLAN, is this possible that the packets can be routed between subnets?

Jon Marshall Wed, 08/15/2007 - 22:44
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Hi


Yes a L3 switch can route between your subnets. As long as you have ip routing enabled your switch will be able to route between all the vlans you have on the switch providing you have created L3 SVI's for the vlans.


HTH


Jon

guruprasadr Thu, 08/16/2007 - 01:31
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HI,


I agree to Jon.


L3 Switch can route Packets unless and Until the IP Routing is enabled on the Switch.


If your requirement is just a L2 communication means then you can use STP concept.


DO RATE ALL HELPFUL POSTS.


Best Regards,


Guru Prasad R

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