12-09-2009 01:18 AM
Hi Everybody!
I have question: when a VC is configured on an interface, does routing protocols are disabled on this interface?
Thank You,
Agata
12-09-2009 01:33 AM
Hi,
AFAIK, xconnect cannot be configured on an interface with IP address.
If you try xconnect with IP address configured on an interface, error message will be seen as below,
R1(config-subif)#int e0/2
R1(config-if)#ip addr 1.1.1.3 255.0.0.0
R1(config-if)#xconnect 1.1.1.1 123 encapsulation mpls
Incompatible with ip address command on Et0/2 - command rejected.
R1(config-if)#no ip addr 1.1.1.3 255.0.0.0
R1(config-if)#xconnect 1.1.1.1 123 encapsulation mpls
R1(config-if-xconn)#exit
R1(config-if)#
So obviously it cannot participate in routing protocol as it doesnt have IP address.
Regards,
Nagendra
12-09-2009 05:11 AM
Hello Agata,
you can have routed subinterfaces, EoMPLS subinterfaces, subinterfaces in VRF under the same main interface but a single interface cannot be at the same a L2 facing point and a L3 interface as Nagendra has showed.
Using subinterfaces can give a chance to provide L2 and L3 services for different vlan-ids
Hope to help
Giuseppe
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