Propagating vlan’s over a eigrp?

5 pts.
Tags:
Cisco
Cisco 7200
Cisco switches
EIGRP
HP ProCurve
HP switches
Switches
VLAN
Hello, I have 2 switches - one in building X and the other in building Y. The buildings are connected via fiber and eigrp is the protocol that's setup between them. The buildings are p2p connections between 7200's. I need the Vlans to be propagated from switch "y" to switch "x" over the L3 connection. If the the link between the buildings were l2 - I could use VTP.  :(   Thanks!! E

Software/Hardware used:
HP Procurve Switches, Cisco 7200 and eigrp
ASKED: March 9, 2010  9:10 PM
UPDATED: June 21, 2011  2:55 PM

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If the switches are linked by L3, then “normal” VLAN’s won’t be propogated automatically. The switches at opposite ends of the link will work “independently”; although traffic can be routed from one side to the other.

In fact, it is tricky (but not impossible) to have the same subnets active on opposite ends of a L3 link. So you will have a different set of VLANS on the two switches…

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  • Palooka
    Is it possible to divide switch interfaces into sub interfaces? This is what you do when you need to carry VLAN data across P2P on Cisco routers.
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