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Re: Any 1U - 2U Ethernet switches that can handle 4K VLANs?
> > 1) Cisco ISL is much better than urgly 802.1q - first of all, it was > > designed many years before 802.1q. I am not even talking abiout those > > idiots, who designed 802.1q as a _spanning tree on the trunk level_, > > which > > made many configurations (which we used with ISL ain 199x years) > > impossble, > > and caused vendors to extend 802.1q. > > Is it April 1st? ISL changes the size of packets, does it not? So know > you have to deal with MTU issues. What happens when I want the biggest > MTU possible? I know it is not much a difference in size, but for some > people, size does matter. > > I am quite happy with dot1q. My gripe is with poor spanning-tree > implementations. I don't want a single spanning-tree for every vlan on > a trunk... I like standards, but I am happy with Rapid-PVST. Just my > feelings about the issue. I would never deploy ISL unless I had > something like a 1900 that did not do dot1q Amen. At my previous employer, we got rid of ISL on almost all trunks. I wouldn't dream of going back. The only thing I don't really like about 802.1q compared to ISL is the idea of "native" or "default" VLAN. I want links to be either access (untagged) or trunk (*all* packets tagged). Fortunately, reasonably new Cisco switches let me enforce that with "vlan dot1q tag native". Steinar Haug, Nethelp consulting, email@example.com