Data inversion is a choice at the CSU/DSU to match the DTE, traditionally
IBM compatible stuff required inversion, so there's no way to specifiy it
at the DTE (i.e. HSSI interface).
typically for this kind of application you want the satellite modem to
supply both transmit and receive clock - it knows...
"Overrun" errors on the interface are not directly clock related, they
indicate when the router doesn't have enough DMA bandwidth to accept the
data coming in at line rate. If they're coupled with framing or CRC
errors, that indicates your data may be getting generally trashed.
George
> Date: Sun, 28 May 2000 10:12:57 -0400
> Received-Date: Sun, 28 May 2000 10:12:56 -0400
> From: "Susheel Gooly" <sgooly@intnet.mu>
> To: <cisco-nsp@puck.nether.net>
> Subject: [nsp] hssi interface
>
> Do u know how to inverse the polarity on the rx data in Hssi interfaces?
> Can this be done at the satellite modem level ?
> I am looking at implementing an assymetric 8/2 MB link but I am getting data
> overruns.
> Does any one know how to configure the blackbox in such implementations
> (clock master or slave ???) ?
>
> Regards
> susheel Gooly
>
>
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