On Oct 27, 2012, at 11:28 , Christopher Morrow <morrowc.lists@gmail.com> wrote:
On Sat, Oct 27, 2012 at 7:05 AM, Anurag Bhatia <me@anuragbhatia.com> wrote:
Hi Blair
I guess that's pretty much because they don't really wish to put any info related to routers in public including location & circuit bandwidth which is often given major networks in PTR.
more over, what help is it? I'm of two minds really about this: 1) it's handy to say: the router in elbonia is being 'bad' 2) it's just as simple to say: 'your router with interface ip 1.2.3.4 is being bad' (or: "everything through 1.2.3.4 is forked... plstofixkthxbi!")
True, but... It's handy to say foo-e1-kcks is hosed. Not as handy to say 2001:db8:5fe3:139a:6254:03ff:fe19:acf3 is hosed.
It's often cited as a headache to maintain the PTRs (not really, automation ftw!) I think really it gets down to "how does it really help?"
See above? Beyond that, it's also convenient if you're trying to correlate outages affecting more than just google. For example, if I'm getting complaints about access to google, yahoo, nymex, and edgar and traceroutes to all three of those show packet loss between routers in Dallas and routers in Atlanta, then I know I'm probably facing a fiber or carrier outage or partial outage along the Dallas to Atlanta path. I may be able to take independent action to reroute my traffic via a more northerly path to avoid that problem. Owen