LES CIRCUIT

[carl_townshend]

On a les circuit do you need to have routers on both ends or can you put a switch at each end and use it as the same lan effectively.

thanks

Carl

[carl_townshend]

Can anyone help ?

This means leased line !!

[1drowley]

Hi,

LES is presented in RJ45, it depends what you want to achieve, a layer3 switch would more than likely give you the management/performance that you are after. Although a standard layer2 would also work fine.

We have used Cisco switches sucessfully in the past on LES.

For your info, have a look at this link

http://www.sinet.bt.com/

and look for BT SIN 118, it explains exactly what LES is for you :)

Give me a shout if you need some consultancy ;)

David.

david.rowley@dupre.co.uk

[carl_townshend]

So it would work if I had 2 switches either side then ? wouldnt this flood the line ?

[1drowley]

Hi,

Sorry realised I did not actually answer your other question!

If you are concerned about traffic on the LES then you have a couple of desicions to make

1) do you want a single subnet?

2) do you want seperate subnets per site?

If the answer is 1 then you will have some broadcast traffic going over the link, however you would get away with a layer 2 switch

If the answer is 2 then you will break apart the broadcast domain, therefore reducing usage on the link, and you would need a layer 3 switch / wirespeed router.

Hope that helps.

David.

[paddyxdoyle]

In addition to what David correctly said, you can get a fibre presentation too for Lan Extensions.

Rgds

Paddy

[martintonner]

True. we have 2 1Gb LES circuits between 2 sites, presented on sc fibre and configured as isl trunks between Cat4507Rs.

The previous LES circuits were 100Mb and presented on rj45.

[1drowley]

Yes, yes, my bad - I missed out the fibre presentation! But hey if you read the BT SIN it is all there in my defense! *gin*

Thanks all,

David.