[28273] in North American Network Operators' Group
name servers
daemon@ATHENA.MIT.EDU (Dana Hudes)
Sun Apr 23 13:51:00 2000
Message-ID: <002a01bfad4c$1dfb6e40$3d5cdcd1@hudes.org>
From: "Dana Hudes" <dhudes@panix.com>
To: <nanog@merit.edu>
Date: Sun, 23 Apr 2000 13:48:21 -0400
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Errors-To: owner-nanog-outgoing@merit.edu
I have a name server for the few domains I host and my little local LAN. =
with reverse DNS lookup on for incoming e-mail and for web server =
logging, it does a fair bit of ns queries. I considered making it =
forward to concentric (my DSL ISP) name server but the result would be =
degraded performance of my network (or possibly no improvement over =
concentric, depending on which root is queried):
PING hudson.concentric.net (207.155.183.72): 56 data bytes
64 bytes from hudson.concentric.net (207.155.183.72): seq=3D0 ttl=3D247 =
time=3D85.1 ms
.
64 bytes from hudson.concentric.net (207.155.183.72): seq=3D1 ttl=3D247 =
time=3D85.9 ms
.
64 bytes from hudson.concentric.net (207.155.183.72): seq=3D2 ttl=3D247 =
time=3D86.3 ms
.
---- hudson.concentric.net (207.155.183.72) PING Statistics ----
3 packets transmitted, 3 packets received, 0% packet loss
round-trip (ms) min/avg/max =3D 85.1/85.8/86.3 (std =3D 0.475)
PING a.root-servers.net (198.41.0.4): 56 data bytes
64 bytes from a.root-servers.net (198.41.0.4): seq=3D0 ttl=3D249 =
time=3D28.9 ms.
64 bytes from a.root-servers.net (198.41.0.4): seq=3D1 ttl=3D249 =
time=3D19.2 ms.
64 bytes from a.root-servers.net (198.41.0.4): seq=3D2 ttl=3D249 =
time=3D18.0 ms.
64 bytes from a.root-servers.net (198.41.0.4): seq=3D3 ttl=3D249 =
time=3D48.6 ms.
PING b.root-servers.net (128.9.0.107): 56 data bytes
64 bytes from b.root-servers.net (128.9.0.107): seq=3D0 ttl=3D248 =
time=3D73.1 ms.
64 bytes from b.root-servers.net (128.9.0.107): seq=3D1 ttl=3D248 =
time=3D72.5 ms.
64 bytes from b.root-servers.net (128.9.0.107): seq=3D2 ttl=3D248 =
time=3D73.7 ms.
64 bytes from b.root-servers.net (128.9.0.107): seq=3D3 ttl=3D248 =
time=3D73.3 ms.
64 bytes from b.root-servers.net (128.9.0.107): seq=3D4 ttl=3D248 =
time=3D76.9 ms.
=F2
---- b.root-servers.net (128.9.0.107) PING Statistics ----
5 packets transmitted, 5 packets received, 0% packet loss
round-trip (ms) min/avg/max =3D 72.5/73.9/76.9 (std =3D 1.54)
PING c.root-servers.net (192.33.4.12): 56 data bytes
64 bytes from c.root-servers.net (192.33.4.12): seq=3D0 ttl=3D247 =
time=3D23.4 ms.
64 bytes from c.root-servers.net (192.33.4.12): seq=3D1 ttl=3D247 =
time=3D20.8 ms.
64 bytes from c.root-servers.net (192.33.4.12): seq=3D2 ttl=3D247 =
time=3D22.7 ms.
64 bytes from c.root-servers.net (192.33.4.12): seq=3D3 ttl=3D247 =
time=3D20.2 ms.
64 bytes from c.root-servers.net (192.33.4.12): seq=3D4 ttl=3D247 =
time=3D20.6 ms.
=F2
---- c.root-servers.net (192.33.4.12) PING Statistics ----
5 packets transmitted, 5 packets received, 0% packet loss
round-trip (ms) min/avg/max =3D 20.2/21.5/23.4 (std =3D 1.25)
PING d.root-servers.net (128.8.10.90): 56 data bytes
64 bytes from d.root-servers.net (128.8.10.90): seq=3D0 ttl=3D246 =
time=3D91.7 ms.
64 bytes from d.root-servers.net (128.8.10.90): seq=3D1 ttl=3D246 =
time=3D109 ms.
64 bytes from d.root-servers.net (128.8.10.90): seq=3D2 ttl=3D246 =
time=3D109 ms.
64 bytes from d.root-servers.net (128.8.10.90): seq=3D3 ttl=3D246 =
time=3D111 ms.
64 bytes from d.root-servers.net (128.8.10.90): seq=3D4 ttl=3D246 =
time=3D99.6 ms.
=F2
---- d.root-servers.net (128.8.10.90) PING Statistics ----
5 packets transmitted, 5 packets received, 0% packet loss
round-trip (ms) min/avg/max =3D 91.7/104/111 (std =3D 7.34)
PING E.ROOT-SERVERS.NET (192.203.230.10): 56 data bytes
64 bytes from E.ROOT-SERVERS.NET (192.203.230.10): seq=3D0 ttl=3D56 =
time=3D75.1 ms.
64 bytes from E.ROOT-SERVERS.NET (192.203.230.10): seq=3D1 ttl=3D56 =
time=3D78.3 ms.
64 bytes from E.ROOT-SERVERS.NET (192.203.230.10): seq=3D2 ttl=3D56 =
time=3D75.0 ms.
64 bytes from E.ROOT-SERVERS.NET (192.203.230.10): seq=3D3 ttl=3D56 =
time=3D75.9 ms.
=F2
---- E.ROOT-SERVERS.NET (192.203.230.10) PING Statistics ----
4 packets transmitted, 4 packets received, 0% packet loss
round-trip (ms) min/avg/max =3D 75.0/76.0/78.3 (std =3D 1.35)
Clearly BTW I'm not getting what I'm paying for (1.1Mb SDSL via Covad) =
from Concentric.
85ms is ridiculously bad to a name server.
