The fix was "switchport nonegotiate" to turn off Cisco DTP which is enabled on Cisco ports by default.
http://packetlife.net/blog/2008/sep/30/disabling-dynamic-trunking-protocol-dtp/ As I suspected, they had speed nonegotiate confused with switchport nonegotiate. Everything is now working. On Thu, Mar 11, 2010 at 3:25 PM, Gerald Krause <[email protected]> wrote: > Am 11.03.10 22:15, schrieb George B.: > > I am working on a new deployment in Verizon data center in Europe. We > > have an MLX with LX optics. Our two routers link fine but when we > > connect the uplinks to Verizon, no link. I have tried everything I know > > such as rolling xmit/receive, changing negotiation, etc. The config is > > REALLY simple, just an IP address, route-only on the interface, and no > > spanning-tree. Links fine between MLX units, will not link to Verizon's > > cisco. > > > > I recall having this same problem with vendors using Cisco in the past > > (Level3, Savvis UK) and it took them a while to figure it out but they > > have always done something that allowed things to work eventually. > > Anyone have the magic clue I can pass to VZB to make this thing work? > > If you have an solution - let me hear. I'am still unable to connect a > new XMR to an old Cat5000/SUP3 with GE-SX. Because I've tried any > combination of interface settings on both the XMR and the Cat5000 side, > I doubt that they ever will see each other (I hadn't this problem with > our oldish Foundry NI800). > > -- > Gerald > _______________________________________________ > foundry-nsp mailing list > [email protected] > http://puck.nether.net/mailman/listinfo/foundry-nsp >
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