Re: Setup Metro ethernet (KPN EVPN)

"Dennes" <dennez@xxxxxxxxx> wrote in message
news:1183495403.451860.149040@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
On 3 jul, 21:50, "stephen" <stephen_h...@xxxxxxxxxxxx> wrote:
"Dennes" <den...@xxxxxxxxx> wrote in message

news:1183470569.945894.91310@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

Hi,
We have just replaced our existing DSL based VPN solution with ametro
ethernetone, connecting our 3 sites together over 10Mbit links.
Now i just have a simple question.
The telcosetupthemetroethernet(layer 2 multipointethernet
connection between the 3 sites) and installed Nortel 1400 ESM switches
at each site. After that, they were gone and could'nt tell me how to
further configure it.

is it this?http://www.lightreading.com/document.asp?doc_id=78525



Yep, that's it


If i'm right, i actually have anethernetlink between every site, but
i cannot just plug the Nortels in the existing switches at each site
since all sites are on a different subnet, right?

So do i need anethernetrouter at each site, connected between the
Nortel (WAN) and the existing LAN andsetupanother new subnet for the
"WAN net"? But what would i use as gateway at the wan ip side?

Should it be like this?

site1
lan1<----192.168.1.1[router]10.0.0.1<---------
10.0.0.2[router]192.168.2.1----->lan2

could be - ie the WAN "cloud" is just anEthernet.

if all your sites have the same IP subnet, you could just plug them in -
but
that would not be a good idea if you have any other links out. So
routers at
each site would be much better.

or there might be some structure in the WAN - i have seenEthernetWANs
where different destinations selected by 802.1Q VLAN.

either way you need a router or a layer 3 switch at each location.


All sites have different subnets, so plugging in won't work i guess.
If i put routers at every site (3 in total), do i need to create a
separate WAN subnet to interconnect the routers?

that would be the classic way to do it. It also makes it easier to add extra
sites later.

If i use a layer 3 switch instead of a router. Does that need
configuring, or is it just a matter of plugging in and it works?

it is just a router with built in hardware driven engine - so roughly same
amount of config as a router.

that translates into a few lines to type for simple, going up to dozens of
lines when you add security, QoS and all the other stuff that might be
needed.

Do you have a suggestion for a good, but not too expensive layer 3
switch?

if you might have to hire in expertise, the estiest to find already trained
people is probably Cisco.

I like the Catalyst 3560s for low end boxes, since they have most things you
might want with the advanced s/w, and you can add that later if need be -
but low end still means $3k list each, or $5k with the advanced s/w....)
http://www.cisco.com/en/US/products/hw/switches/ps5528/index.html

if that is too painful then Foundry, HP, maybe 3Com?

ultimate in low cost is possibly build a router on a linux PC or server with
some 10/100 cards.


etc.

Can somebody please point me in the right direction with this, since
i'm a bit new to this kind ofsetup?

a mid range router (Cisco 2811 or 3825) should be able to cope with 10M
even
if you need some processor intensive stuff turned on such as QoS and
multicast.

but if you think you might want faster links later then a layer 3 switch
would be better (or if you already have a L3 capable box on the sites,
you
could just use a port on that).

Thanks,
Dennes

--
Regards

stephen_h...@xxxxxxxxxxxx - replace xyz with ntl


Thanks for taking the time to help!
Much appreciated.
Dennes
--
Regards

stephen_hope@xxxxxxxxxxxx - replace xyz with ntl


.

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