26 Jan
2004
26 Jan
'04
12:06 p.m.
ISL _DOES NOT CHANGE_ packet size.
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
2) Of course, VLAN does not infer routing. But VLAN routing can be provided on the switch fabric, effectively bypassing many traditional drawbacks - see Cisco 6509, for example.
Are you talking about multilayer switching implementations? That is why C came out with dCEF. I costs, but if you want to do serious routing, damn if it ain't fast ;-) Agree in general.