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dot1q trunking with extended vlans

Is there an issue while using dot1q sub-interfaces with extended vlans on cat 6500 ?We have alcatel and cat 6500 connected with dot1q trunk in two locations.At layer3 , We have a subinterface defined in two cat 6500 in two locations with a common subnet.It does not ping.

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Re: dot1q trunking with extended vlans

The dot1q subinterface should work with extended vlan, there could be a mismatch in Vlan configuration.

The following URL provides the details of configuring layer 3 interfaces.

http://www.cisco.com/en/US/products/hw/switches/ps708/products_configuration_guide_chapter09186a0080160a07.html#wp1040486

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