nanog mailing list archives
Re: Do ATM-based Exchange Points make sense anymore?
From: Paul Vixie <vixie () vix com>
Date: 10 Aug 2002 02:32:11 +0000
What functionality does PVC give you that the ethernet VLAN does not?That´s quite easy. Endpoint liveness. A IPv4 host on a VLAN has no idea if the guy on the "other end" died until the BGP timer expires. FR has LMI, ATM has OAM. (and ILMI)
Adding complexity to a system increases its cost but not nec'ily its value. Consider the question: how often do you expect endpoint liveness to matter? If the connection fabric between your routers has an MTBF best measured in hours or days, then you've got bigger problems than you'll solve with LMI. If on the other hand the MTBF is best measured in months or years, then when it does fail the failure is likely to be *in* the extra complexity you added. -- Paul Vixie
Current thread:
- Re: Do ATM-based Exchange Points make sense anymore?, (continued)
- Re: Do ATM-based Exchange Points make sense anymore? Alex Rubenstein (Aug 08)
- Re: Do ATM-based Exchange Points make sense anymore? Mikael Abrahamsson (Aug 08)
- Re: Do ATM-based Exchange Points make sense anymore? bmanning (Aug 08)
- Re: Do ATM-based Exchange Points make sense anymore? Alex Rubenstein (Aug 08)
- Re: Do ATM-based Exchange Points make sense anymore? Nenad Trifunovic (Aug 09)
- Re: Do ATM-based Exchange Points make sense anymore? William B. Norton (Aug 09)
- Re: Do ATM-based Exchange Points make sense anymore? Mike Leber (Aug 09)
- Re: Do ATM-based Exchange Points make sense anymore? Alex Rubenstein (Aug 10)
- Re: Do ATM-based Exchange Points make sense anymore? William B. Norton (Aug 09)
- Re: Do ATM-based Exchange Points make sense anymore? Nenad Trifunovic (Aug 09)
- Re: Do ATM-based Exchange Points make sense anymore? Mikael Abrahamsson (Aug 09)
- Re: Do ATM-based Exchange Points make sense anymore? Petri Helenius (Aug 09)
- Re: Do ATM-based Exchange Points make sense anymore? Paul Vixie (Aug 09)
- Re: Do ATM-based Exchange Points make sense anymore? Petri Helenius (Aug 10)
- Re: Do ATM-based Exchange Points make sense anymore? Paul Vixie (Aug 10)
- Re: Do ATM-based Exchange Points make sense anymore? Mikael Abrahamsson (Aug 10)
- Re: Do ATM-based Exchange Points make sense anymore? Mike Hughes (Aug 10)
- Re: Do ATM-based Exchange Points make sense anymore? cowie (Aug 10)
- Re: Do ATM-based Exchange Points make sense anymore? Robert E. Seastrom (Aug 10)
- Re: Do ATM-based Exchange Points make sense anymore? Mikael Abrahamsson (Aug 09)
- Re: Do ATM-based Exchange Points make sense anymore? Petri Helenius (Aug 10)
- Re: Do ATM-based Exchange Points make sense anymore? Richard A Steenbergen (Aug 10)
- Re: Do ATM-based Exchange Points make sense anymore? Jared Mauch (Aug 10)
- Re: Do ATM-based Exchange Points make sense anymore? Vadim Antonov (Aug 10)