[c-nsp] VLAN and switch and ?

[Deric Kwok]

look like L2TP.

Can I know why use it intead of typically vlan?

Thank you

On Wed, Mar 4, 2009 at 10:14 AM, Jeff Fitzwater <jfitz at princeton.edu> wrote:

> Look at layer 2 tunneling for your switches.  You would assign tunnel vlan
> ID and ISP would send tagged traffic into tunnel (Q in Q) and traffic would
> exit tunnel where ever needed.   When you assign a port as a tunnel port, it
> becomes a tunnel-input and tunnel-output.   You can have as many tunnel
> ports as you need.  The ISP can now send what ever VLANs they want and you
> do not need to change anything.
> Read the doc and be aware of oversized packet handling within tunnel
> switches.
>
>
> Jeff Fitzwater
> OIT Network Systems
> Princeton University
>
>
> On Mar 4, 2009, at 9:46 AM, Charles Regan wrote:
>
> Good Morning,
>>
>> I'll try to explain what I want to do... We are LOCAL NETWORK in this
>> graphic.
>> The ISP wants to use our fiber link to connect to his wireless customer.
>> We also want internet access from his Wireless Backhaul1.
>> ISP also use VLAN on his customer subscriber modules.
>>
>> How would you configure 2924 Switch and 2960 Switch, so that
>> everything is transparent from my side and his side ?
>> I don't want him to call me to add a new VLAN on our switch.
>>
>>
>> ISP ---Wireless BackHaul1 -- 2924 Switch ---- FIBER ---- 2960 Switch
>> ---- Wireless Backhaul2 ---- Access Point ---- Wireless subscriber
>> modules
>>                                           |
>>            |
>>                                           |
>>            |
>>                                           |
>>            |
>>                                           |
>>            |
>>                                           |
>>            |
>>                            LOCAL NETWORK            LOCAL NETWORK
>>
>>
>> Will something like this work ?
>> switchport access vlan 500
>> switchport trunk encapsulation dot1q
>> switchport mode trunk
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