For those of you running 6500 VSS and using the traditional 3-layer campus model (core/distro/access) with a layer 3 core...do you use VSS in your core?
We are using VSS in the core and distro layers today, but the more $WEIRD_THINGS software bugs we encounter that affect the whole VSS pair on our distros, the less inclined I am to keep VSS in the core. My thinking is that at the distro layer, you at least get some significant benefits for your layer 2 downlinks to your access switches (MEC, no STP, no FHRPs). But in the core, where all of your connectivity is point-to-point L3 links to distros, we can get all of those same benefits with EC + ECMP OSPF (and we don't have anything hitting the core that would need FHRPs). The conclusion I've come to is that VSS at the distro layer has significant benefits with some downsides, while VSS for a L3 core has very few benefits but increased risk of software/human error failures. Has anyone else gone through this thought exercise? -Andy _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
