[c-nsp] 10G vs. EtherChannel over WDM MUX on 7600

[Phil Bedard]

The Etherchannel depends on your traffic makeup.  If you have a ton of  
traffic between two hosts, then it's not going to do you much good.   
For something like an Internet distribution of src/dst it works very  
well.

You should have no issues with Etherchannel over CWDM, it's agnostic  
to the transport mechanism, and many have done it beofre.  A passive  
CWDM mux is going to be a little cheaper than buying 10G cards for the  
7600, and offers more flexibility.   That being said I'd probably do  
the 10G straight away if you have the money to do so, but Etherchannel 
+CWDM has some additional benefits when it comes to protection against  
interface failure.

Phil

On Feb 16, 2008, at 11:05 AM, Zahid Hassan wrote:

> Dear All,
>
>
> I am trying to increase bandwidth between my 7600s running as
> PE/P routers with 1G line cards terminating dark fibre links.
>
> I am exploring the following two options:
>
> Option I
> ---------
> - replace the 1G lines cards with 10G on the 7600s
> - terminate the dark fibre links on the 10G line cards
>
> Option II
> ----------
> - terminate the dark fibre links on passive CWDM MUX
> - EtherChannel multiple 1G interfaces over CWDM MUX
>
>
> My main concern is about the efficiency of different load-balancing
> algorithm offered in the EtherChannel technology in terms of maximum
> achievable bandwidth.
>
> Also, is there any issues of running Etherchannel over passive CWDM  
> MUX ?
>
>
> I will be really grateful for any comments or inputs on this.
>
>
> Regards,
>
>
> Zahid
>
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