Wait, LR4 <> C-band transponder?
Having worked a bit with Ciena 6500, there should be a pair of cards
at either side, theres a "client" card with a matching LR4 optic, and
the transponder ("line") card that is tunable in the C-band. Wouldnt
be so sure about hooking an LR4 straight up to the transponder...
But anyway, by the time your LR4 client signal makes it near the line
side of the system it should be wrapped in an OTU4, rather than being
native across the wire. So presumably it shouldn't have any impact on
either end, not least the line side. Maybe some alarms could be
generated on the client cards as they will see your client signal
natively.
On 21 December 2015 at 22:58, Mike Hughes <[email protected]> wrote:
> Hi all,
>
> Wondered if anyone had an experience with interop between Brocade 100G LR4
> interfaces and Ciena 6500 DWDM gear (specifically the 100G WL3e C-band LR
> transponder card)?
>
> Any gotchas or known issues to report?
>
> The Ciena gear isn't under my control, it's carrier equipment.
>
> On the far side of the DWDM infra, there's the reverse - demux and
> transponder, going into a Juniper (I think MX of some description), all not
> under my control.
>
> We're getting repeated bouncing of the interface our side with "Remote Fault
> 1" as the reason.
>
> Sadly, I can't go and eyeball this myself as it's in Japan, so I'm dependent
> on local hands and eyes to get to the bottom of this.
>
> We're already interoperating the Brocade 100G LR4 interfaces successfully in
> the EU with other Brocade, Cisco and Juniper gear, and I suspect ALU too.
>
> I suspect this is the first time we've gone across the metro at 100G on
> infra other than our own.
>
> If anyone's got any helpful suggestions, please drop me a line.
>
> Cheers,
> Mike
