We recently hit a similar problem, and the answer from Juniper was 'you can't', at least for M series routers.
The J series boxes have a facility called 'virtual-channels' which achieves this, but their performance is obviously not the same as an M series box. That said, the new J6x50 boxes are a lot better than the older J series boxes, and are capable enough for many applications. Hope this helps Michael > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of [EMAIL PROTECTED] > Sent: 16 January 2007 04:27 > To: juniper-nsp@puck.nether.net > Subject: [j-nsp] How to CoS on M-series Fe interface but > connected to Fe/E3converter ? > > > Hi, > > I have this topo: > > multi-ingress_FE------------>M7i-FE---------->Fe/E3_converter- > ----------------------> > > I need to CoS on FE interface but do not know how to let this > M7i know about "the real bw" 34Mbps of the Fe/E3 converter . > Congestion can happen on egress link of M7i to converter. > > You can policer each forwarding class, but then can not reuse > the vacant bw of other classes. > > You can policer the egress traffic to max value of 34M, but > you can not maintain the scheduler rate ratio. > > Is there any way to maintain the same scheduler rate ratio > for E3 rate as well as bandwidth re-utilization between all > forwarding classes ? > > BR, > > Dang > _______________________________________________ > juniper-nsp mailing list juniper-nsp@puck.nether.net > https://puck.nether.net/mailman/listinfo/juniper-nsp > _______________________________________________ juniper-nsp mailing list juniper-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/juniper-nsp