Problems with VLAN between Cisco 3600 router and cisco 3550 switch

Unanswered Question
Oct 10th, 2008

I need to trunk a VLAN between a Cisco 3600 series and a cisco 3550.

I have the following configs:

Cisco 3550:

interface FastEthernet0/1

switchport trunk encapsulation dot1q

switchport trunk allowed vlan 353

switchport mode trunk

speed 100

duplex full

!

interface Vlan353

ip address xxx.xxx.xxx.62 255.255.255.252

!

Cisco 3600:

interface FastEthernet0/0

no ip address

speed 100

full-duplex

!

interface FastEthernet0/0.353

encapsulation dot1Q 353

ip address xxx.xxx.xxx.61 255.255.255.252

!

FE0/0 is directly connected to FE1/0 (test environment), however I cannot ping .61 from the 3550 or .62 from the 3600.

What am I missing here??

Thanks.

I have this problem too.
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frank.murray Fri, 10/10/2008 - 11:22

could be a native VLAN mismatch.

What does debug tell you?

Try creating a sub-interface on the router in VLAN 1 which is the default native vlan

interface FastEthernet0/0.1

encap dot1q 1

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