nanog mailing list archives
Re: CWDM equipment (current favorites) (fwd)
From: alex () pilosoft com
Date: Thu, 2 Nov 2006 17:33:01 -0500 (EST)
On Thu, 2 Nov 2006, Deepak Jain wrote:
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
Well, that's how LX4 actually works internally - but you can't plug in your own optics for those 4 cwdm channels :( Why not just do 10G natively? (LX4 or DWDM or whatever?)
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.
You *have* to deal with signaling somehow, because of regeneration of the signal, so you have to have your own kind of signaling (whether sonet or ethernet or ...) on these lambdas. -alex
Current thread:
- Re: CWDM equipment (current favorites) (fwd) Deepak Jain (Nov 02)
- Re: CWDM equipment (current favorites) (fwd) alex (Nov 02)
- Re: CWDM equipment (current favorites) (fwd) Deepak Jain (Nov 02)
- Re: CWDM equipment (current favorites) (fwd) Adam Rothschild (Nov 02)
- Re: CWDM equipment (current favorites) (fwd) Deepak Jain (Nov 03)
- Re: CWDM equipment (current favorites) (fwd) Deepak Jain (Nov 02)
- Re: CWDM equipment (current favorites) (fwd) alex (Nov 02)