Re: [nsp] bridging into tunnel interface

From: Siva Valliappan (
Date: Thu Jun 21 2001 - 23:50:03 EDT

thx :)

learn something new every day....


On Thu, 21 Jun 2001 wrote:

> Siva,
> In cisco-nsp, you wrote:
> > plan to pass? you can configure clns/isis on GRE tunnels and enable
> > the router for clns routing. i have never done this myself, so don't
> > know if it will work. but looking around the stuff to support clns/isis
> > over GRE tunnels is there. if it's some traffic that you want
> > passed transparently trough the router, you may want to think about
> > running DLSW/RSRB between your 2 end points.
> OSI/ISO 10589 ISIS works very well over tunnels as does CMIP, vt, FTAM and
> all those other OSI legacy protocols. Several network operators use GRE
> tunnels to virtualize the required DCN network for DWDM, SDH gear that do
> not talk IP yet and/or keep the area stable.
> Of course, if you have huge amounts of packet loss the tunnel is bound to
> break and the traffic inside will be affected, too.
> // kaj

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