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