nanog mailing list archives
Re: Inter-exchange media types
From: Peter Lothberg <roll () stupi se>
Date: Tue, 30 Apr 96 21:56:46 MET DST
Peter Lothberg <roll () stupi se> writes * > Dtatacom tests were performed in the 10/100 setup. Obviously * > the Fast ethernet switches had an advantage over the FDDI * > switches since Fast ethernet and conventional ethernet work * > with the same frame types. FDDI switches on the other hand * > has to convert ethernet frames to FDDI frames and vice versa. * > Todays NAPs in most cases are not 10/100 set up. It is more like * > DS3/100/100 setup where routers are feeding traffic into the Gigaswitch * > using FDDI and since HSSI and FDDI is using same MTU size, no * > fragmentation is involved. * * Both 10 and 100 ethernet use 1500 byte mtu. * * And remember that the characteristics of a loaded exchange is very * diffrent between ethernet and token-ring. And then there is always the possibility to run 100BT in full-duplex rather than half duplex...
Asuming that you have a switch in the middle that can buffer the BW/Delay quota. How many of the 100Mbit ether switches has 4MB per port in buffering? (token out for lunch and the router buffers) ((and some fddi switches can talk full-duplex)) --Peter
Current thread:
- Re: Inter-exchange media types, (continued)
- Re: Inter-exchange media types Wolfgang Henke (Apr 25)
- Re: Inter-exchange media types Vadim Antonov (Apr 25)
- Re: Inter-exchange media types Paul Ferguson (Apr 25)
- Re: Inter-exchange media types Paul Ferguson (Apr 25)
- Re: Inter-exchange media types k claffy (Apr 27)
- Re: Inter-exchange media types Hank Nussbacher (Apr 27)
- Re: Inter-exchange media types Curtis Villamizar (Apr 29)
- Re: Inter-exchange media types ipasha (Apr 30)
- Re: Inter-exchange media types Peter Lothberg (Apr 30)
- Re: Inter-exchange media types Marten Terpstra (Apr 30)
- Re: Inter-exchange media types Peter Lothberg (Apr 30)
- Re: Inter-exchange media types Paul A Vixie (Apr 30)