North American Network Operators Group
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Re: CWDM equipment (current favorites) (fwd)

  • From: Deepak Jain
  • Date: Thu Nov 02 17:35:04 2006 


We need to place a new order for some new fiber builds and were
considering some other vendors. Especially in the nx2.5G and nx10G (are
CWDM x-cievers even available in 10G yet?) range. Anyone have any new
favorites?



2.5G are only slightly more expensive than 1G - if you have OC48 gear that

is SFP-capable, by all means, use that.



10G CWDM is *rumoured* to exist, but I don't think there are any

production ones yet. Feel free to correct me. 10G is all DWDM, and so far
very pricy.





I think this is the rub (regarding multirate optics). What I'd love to
be able to do is take a multirate optic and shove it into some 1U type
switch or router that takes several gigabits of a IP or Ethernet frames
and load balances them PPP or CEF style across a few 2.5/2.7G lambdas.
So say 10 gigabits of traffic over 4 lambdas. I don't need to replicate
GE signaling or SONET signaling... just move the bits. I know this is
very easy (trivial even) at 1G signaling rates, I never understood
[other than for markup purposes] why the vendors don't let those uplink
ports be 2.5G capable.



(I'm already aware of the cards that two 2G -> 1 multirate lambda. I
would like a box that does better than that as effective throughput on
the lambda -- it reduces complexity on our end and media conversion needs).



Any suggestions??



Thanks.



Deepak