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Routed port on Layer 3 switch ?? please help

VTP, Portfast, Spanning Tree and all the other switch related stuff.

Routed port on Layer 3 switch ?? please help

Postby Guest » Fri Dec 31, 2010 7:40 am

Hello everyone

 

I am confuse about the routed port on layer 3 switch , Can someone please help me out why we have to configure routed port on the layer 3 switch .

As we all know that layer 3 switch can do VLAN routing then we need to configure routed port on the layer 3 switch and connect router on that port

what is purpose of confgureing routed port , I am totally confuse about the concept of routed port

 

please help me out

 

Thanks

Guest
 

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Re:Routed port on Layer 3 switch ?? please help

Postby Guest » Fri Dec 31, 2010 8:46 am

routed port is for Layer 3 (like a WAN link on a switch) and is configured with the no switchport command. switchport tu

rns the port into layer 2 for trunking or VLAN assignment. Routed ports are used commonly for Layer 3

cores where all links are Layer 3 since its failover mechanism

s are faster and more effective than Layer 2.

Guest
 

Re:Routed port on Layer 3 switch ?? please help

Postby Guest » Fri Dec 31, 2010 9:26 am

Thanks

 

so it means that the routed port can only use for the WAN link let say I have frame relay configure for the client on my router with different ip address so I want to allow my client ip network to be routed inside my network so i have achive this by doing routed port correct me

 

Thanks

Guest
 

Re:Routed port on Layer 3 switch ?? please help

Postby Guest » Fri Dec 31, 2010 9:51 am

timtech2631 wrote:

 

Thanks

 

so it means that the routed port can only use for the WAN link let say I have frame relay configure for the client on my router with different ip address so I want to allow my client ip network to be routed inside my network so i have achive this by doing routed port correct me

 

Thanks

 

A routed port is just a L3 port. It does not have to be WAN it can be within your LAN ie. you want to connect your L3 switch to a router that then sends traffic somwhere else. You can connect the L3 switch to the router using a routed port on the L3 switch.

 

As for frame-relay, actually on switches you generally wouldn be able to terminate a frame-relay connection. L3 routed ports on L3 switches are for ethernet.

 

Jon

Guest
 

Re:Routed port on Layer 3 switch ?? please help

Postby Guest » Fri Dec 31, 2010 10:10 am

timtech2631 wrote:

 

Hello everyone

 

I am confuse about the routed port on layer 3 switch , Can someone please help me out why we have to configure routed port on the layer 3 switch .

As we all know that layer 3 switch can do VLAN routing then we need to configure routed port on the layer 3 switch and connect router on that port

what is purpose of confgureing routed port , I am totally confuse about the concept of routed port

 

please help me out

 

Thanks

 

Routed ports works at L3 and not L2. So there is no STP (Spanning-tree) running on the port if you configure it as a routed port. Generally speaking routed ports are good when you are using a L3  point to point link between your L3 switch and another L3 switch or router.

 

Jon

Guest
 

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