nanog mailing list archives
Re: Transit LAN vs. Individual LANs
From: "Stephen Sprunk" <stephen () sprunk org>
Date: Mon, 27 Feb 2006 13:29:25 -0600
Thus spake "Ejay Hire" <ejay.hire () isdn net>
From my perspective... ...a physical mesh requires too many ports to be economical.
But, if one has the money, it's probably the better technical choice. Since his folks are already familiar with having things set up PTP using some other physical layer, that also reduces the odds of human error.
...a logical mesh has a couple of things against it. It requires a lot of configuration, and each router will be connected with a trunk interface, (on the antique switches I've worked with) every trunk will carry all the traffic in the switch, your maximum bandwidth across the whole switch is 1gbps, instead of the next option which gives you more bandwidth across the switch.
Not true, unless you're using some antique switching gear. Assuming all traffic is up/downstream and not sideways, you can get 4Gb/s in each direction (two CRs connected to two switches each). Whether you break that into PTP VLANs or shared VLANs shouldn't affect anything.
[ Note that this is moot since the OP responded he's running a physical mesh ]
S Stephen Sprunk "Stupid people surround themselves with smart CCIE #3723 people. Smart people surround themselves withK5SSS smart people who disagree with them." --Aaron Sorkin
Current thread:
- RE: Transit LAN vs. Individual LANs, (continued)
- RE: Transit LAN vs. Individual LANs Owen DeLong (Feb 25)
- Re: Transit LAN vs. Individual LANs Warren Kumari (Feb 27)
- Re: Transit LAN vs. Individual LANs goemon (Feb 27)
- Re: Transit LAN vs. Individual LANs Owen DeLong (Feb 25)
- Re: Transit LAN vs. Individual LANs Stephen Sprunk (Feb 25)
- Re: Transit LAN vs. Individual LANs Mark Smith (Feb 25)
- Re: Transit LAN vs. Individual LANs Mark Smith (Feb 25)
- Re: Transit LAN vs. Individual LANs Pete Templin (Feb 26)
- Re: Transit LAN vs. Individual LANs Owen DeLong (Feb 26)
- Re: Transit LAN vs. Individual LANs Stephen Sprunk (Feb 28)
- Re: Transit LAN vs. Individual LANs Stephen Sprunk (Feb 28)