Tim, May I offer another approach? Maybe you could just drop NLB, and use the IP SLB feature you have inside your Sup720?
Arie On Sun, May 11, 2008 at 12:38 AM, Tim Durack <[EMAIL PROTECTED]> wrote: > On Sat, May 10, 2008 at 4:48 PM, Peter Rathlev <[EMAIL PROTECTED]> wrote: > > On Sat, 2008-05-10 at 12:09 -0400, Tim Durack wrote: > >> Anyone using Microsoft NLB Multicast mode for a cluster? > >> > >> It requires a static arp entry on Cisco, as the cluster ip resolves to > >> a multicast mac, which can't/shouldn't be learned via arp. > > > > I find that a very irritating requirement of the MS NLB. :-) > > > >> So we do something like: "arp a.b.c.d 0100.5e7f.xxyy arpa" > >> Apparently this results in software switching the adjacency on a > >> Sup720, which is painful to say the least. > >> > >> Any suggestions? > > > > I guess you're referring to CSCee49121 "static ARPs dont create adjs > > when used with routes pointing at intf". I thought this was only a > > problem if you used it like this: > > > > ip route 10.11.12.13 255.255.255.255 Gi1/1 > > arp 10.11.12.13 030b.adc0.ffee Gi1/1 > > > > Is the problem also there without the route statement? We use it against > > two MS NLBs, and we don't see any problems. The traffic doesn't seem to > > be software switched, but apart from consulting Feature Manager and > > looking at the CPU interrupt usage, I'm not completely sure how to check > > it. How do you do it? > > No static route - maybe that's the difference. > > Educated guess work. CPU is running >90%. Install a CoPP policy > dropping the traffic, and CPU drops back to a more normal ~30%. > > Monday I plan to try a SPAN against the rp, and see what is hitting > it. I need this to tune CoPP anyway. > > > Regards, > > Peter > > > > > > > _______________________________________________ > cisco-nsp mailing list [email protected] > https://puck.nether.net/mailman/listinfo/cisco-nsp > archive at http://puck.nether.net/pipermail/cisco-nsp/ > _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
