[c-nsp] Upgrading to 40G

Pshem Kowalczyk pshem.k at gmail.com
Thu Feb 27 21:14:37 EST 2014


At this stage we wouldn't be able to justify the spend to go 100G on
ASR9k. We're not talking about a single router or interface here, but
quite a few. Besides - that doesn't really answer the question what to
do with distances over the 10km.

kind regards

On 28 February 2014 13:06, Peter Lothberg <roll at stupi.se> wrote:
>> We just started planning to upgrade our 10G (and nx10G) links to 40G
>> (on ASR9k). Quick scan through Cisco website revealed that there are
>> no 40km optics available from Cisco. That threw a big spanner into the
>> works as we have a bunch of links definitely over LR budgets.
>> So the question is - how do you do 40G in metro areas? Deploy some
>> sort of amplifiers? Go through DWDM or OTN devices?
> Why 40? Do 100G coherent instead, you can build the whole optical
> system out of splitters as we did in Croatia..
> Ask for line_cards with optics that conforms to this spec...
> http://www.stupi.se/Standards/100G-long-haul4.pdf and you can mix and
> match vendors...
> -P

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