Thread Links Date Links
Thread Prev Thread Next Thread Index Date Prev Date Next Date Index

Re: [EFM] OAM - Faye's seven points

I'm not sure I understand this.  If you can crank up the bit signal rate
to accomodate OAM, then could you not crank it up equally to accomodate
more user data?   

In all methods, the OAM bits are taken from the overall # of bits that
go down the medium.  To me, the 'revenue' traffic is all of the bits
available after OAM is accounted for (minus packet overhead minus other
overhead).  This is independent of whether the OAM is @ the PHY, MAC, or

- Matt

Roy Bynum wrote:
> Matt,
> You forget, if the OAM is in the side band, the bit signal rate can be
> increased to accommodate the additional bandwidth used by the OAM
> overhead.  If the OAM is at the MAC above the existing PCS, then the
> bandwidth will have to be taken from the revenue traffic.
> Thank you,
> Roy Bynum
> At 08:16 PM 9/20/01 -0400, Matt Squire wrote:
> >Both OAM and data traffic travel over the same medium.  No matter how we
> >slice it, OAM traffic does reduce the bandwidth available to the user.
> >One way to cap that effect is to use a dedicated side-band with a
> >limited bandwidth.  An alternate way to cap the effect is to
> >police/shape the OAM traffic at a layer above.  A third alternative is
> >to use something like a slow protocol which is limited to 5 frames/sec.
> >