[F10-nsp] S50n w/ 10ge Input CRCs/Discards

[Leslie]

Are you using LR optics and it's a short run? I've found f10 lr xfp's to be
finicky if they're receiving above -4db

Leslie

Sent from the road while on tour.
On Apr 29, 2011 10:53 AM, "Marcus Stoegbauer" <marcus at grmpf.org> wrote:
> On 28.04.11 17:12, Doug Warner wrote:
>> We're trying to deploy 10ge upstream to our S50n stack (read, all the
port 0
>> modules are stacking modules). We're seeing a decent amount of Input
>> CRCs/Discards and can't get the link to go > ~120Mbps. We've replaced
>> *everything* in this link (other than the upstream RSP) -- fiber, 10ge
module,
>> XFPs and are still seeing this problem. Flow control is off on both ends;
CPU
>> seems fairly low (<12%).
>>
>> Any ideas on what might be going on here? Anyone else having problems w/
10GE
>> on S50?
>
> We used to have 10GE on one S50n (no stack), but only moderate traffic
> levels - around 1.2 Gbps. The other side was a S25p, no noticeable
> problems/packet loss with this setup.
>
> Marcus
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