Re: Aggregation of E1 interface ?
- From: "stephen" <stephen_hope.xx@xxxxxxxxxxxxx>
- Date: Tue, 26 Jul 2005 21:06:41 GMT
"Lars L. Christensen" <lars_christesen@xxxxxxxx> wrote in message
news:Xns969FBD7501A0Blarsperseusdkmaybefo@xxxxxxxxxxxxxxxx
> Michel DUBOIS <mdubois@xxxxxxxxx> wrote in news:11ecp82snls65c7
> @corp.supernews.com:
>
> > Hello ...
> > I will try to explain simply my problem ...
> > I've got 2 Cisco routers 7206, router A is on site and router B is the
> > remote router. I've got two ISP as IP backbone connected to this remote
> > router B.
> > Router A and B are connected together with 10 E1 interfaces ... in order
> > to use all the interfaces I've configured one static route per E1
> > interface ... it is working but I'm not sure it will be the most elegant
> > way.
> > So I'm wandering if it is possible to aggregate all those interface into
> > a single one ?
> > Thank you very much for your precious assitance ...
> > Best regards,
> > Michel
> >
> >
>
> Hi Michel
>
> You could look at IMA (Inverse Multiplexing of ATM) and use 8 of the E1s
as
> a single interface, however it requires an IMA interface in each end.
>
>
http://www.cisco.com/en/US/customer/tech/tk39/tk356/tsd_technology_support_
> protocol_home.html
>
> Now you should have 3 interfaces, 1 IMA and 2 E1s. Then you could run an
> IGP between your 2 routers with load sharing.
load balancing over different speed links tends to be self defeating (a
single IMA with 8 channels looks like a 16 Mbps pipe).
better to get 2 IMA cards each end and put 5 E1s on each, then load balance
the resulting 2 IMA pipes.
it also gives you room to expand to 16 E1s.
if you have the E1s presented from a mux at your site, you may be able to
get them presented as an Ethernet pipe - 10 Mbps Ethernet WAN using 5 VC-12s
(the logical pipes used for E1 across SDH) is becoming very common in the
UK, and elsewhere around Europe.
Or maybe 100 Mbps Ethernet physical interfaces made up from 2 to 100 VC-12s
to give you a "soft" bandwidth change.........
However - the rule of thumb is that when you get to 4 to 8 E1s it is as
cheap here (UK) to buy an E3 - soyou might want to ask if the supplier can
give you 100 Mbps fractional Ethernet or an E3 pipe.
>
> Hopes this might be an idea...
>
> Cheers,
> Lars
--
Regards
Stephen Hope - return address needs fewer xxs
.
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- Aggregation of E1 interface ?
- From: Michel DUBOIS
- Re: Aggregation of E1 interface ?
- From: Lars L. Christensen
- Aggregation of E1 interface ?
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