Dot1Q Encapsulation in Wan and Lan interfaces of Router 2900
A Router 2911 have its Lan interface with dot1q encapsulation, my task was configure its Wan interface with dot1q encapsulation too. The point was that a vlan in Lan SubInterface had to go out through other vlan in Wan SubInterface, they must be related one to one.
So, I make the following:
1.-Added SubInterfaces in Wan interface, Vlan 80 y 81:
This Wan port is connected to a Trunk port of remote Swich 3560, in this only is allowed the Vlans 80 and 81, and I configured its nativeVlan as Vlan2.
When I connect a Laptop on access port with Vlan80 in remote Switch, I can do ping to all equipments on subnetwork corresponding to it (192.168.120.0 /192). The same way for Vlan 81.
But the trouble is that I can't have web connection to this equipments. Also, this equipments can do ping's to google, hotmail, DNS's but they don't have web connections. I have checked with traceroute and it is correct. There is no filter either.
And when this network is without Wan Subinterfaces on Router and connected to Acces port on remote Switch, it works very well.
I will appreciate all help you can give me on this issue.
I found the error yesterday. What happend was that there is a microwave link between Router 2911 and Switch 3560, so in this microwave link the size of MTU was short, then we changed its size and it worked.
Regarding your question I coud do telnet too, but not to the web connection. It was for the short MTU.
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