[ale] can anyone explain this?
Christopher Bergeron
christopher at bergeron.com
Mon Dec 17 19:30:24 EST 2001
This is driving me nuts. Here's some more data:
LINUX BOX (also the GATEWAY via eth1):
[root at proto1 /root]# ping www.bass-associates.com
PING www.bass-associates.com (12.108.240.165) from 24.98.82.217 : 56(84)
bytes of data.
--- www.bass-associates.com ping statistics ---
3 packets transmitted, 1 packets received, 66% packet loss
round-trip min/avg/max/mdev = 30.411/30.411/30.411/0.000 ms
[root at proto1 /root]# traceroute www.bass-associates.com
traceroute to www.bass-associates.com (12.108.240.165), 30 hops max, 38 byte
packets
1 att-98-82-1.atl.mediaone.net (24.98.82.1) 7.345 ms 8.271 ms 7.678 ms
2 rr-56-22-54.atl.mediaone.net (66.56.22.54) 28.624 ms 11.672 ms 21.400
ms
3 rr-56-22-57.atl.mediaone.net (66.56.22.57) 9.031 ms 6.769 ms 8.252 ms
4 rr-56-23-46.atl.mediaone.net (66.56.23.46) 9.011 ms 14.194 ms 9.000
ms
5 stgsr01-POS2-0.atl.mediaone.net (66.56.66.30) 13.109 ms 28.920 ms
8.025 ms
6 55-gsr2-POS3-0.atl.mediaone.net (66.56.66.10) 10.035 ms 10.396 ms
36.605 ms
7 12.124.58.41 (12.124.58.41) 32.481 ms 15.510 ms 14.229 ms
8 gbr6-p80.attga.ip.att.net (12.123.21.78) 9.914 ms 8.965 ms 10.398 ms
9 gbr3-p80.attga.ip.att.net (12.122.5.46) 52.657 ms 10.544 ms 15.591 ms
10 gbr4-p40.ormfl.ip.att.net (12.122.2.182) 18.289 ms 21.284 ms 24.423
ms
11 gbr1-p90.ormfl.ip.att.net (12.122.5.126) 18.136 ms 19.502 ms 20.712
ms
12 ar4-a3120s2.ormfl.ip.att.net (12.123.32.61) 19.680 ms 27.440 ms
37.296 ms
13 206.121.224.234 (206.121.224.234) 53.893 ms 30.685 ms 34.200 ms
14 * * *
(15-24 * * * 's truncated for brevity )
25 * * *
[root at proto1 /root]# route
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use
Iface
192.168.0.0 * 255.255.255.0 U 0 0 0 eth0
24.98.82.0 * 255.255.254.0 U 0 0 0 eth1
127.0.0.0 * 255.0.0.0 U 0 0 0 lo
default att-98-82-1.atl 0.0.0.0 UG 0 0 0 eth1
----------------------------------------------------------------------------
THE WINDOWS BOX:
----------------------------------------------------------------------------
C:\>ping www.bass-associates.com
Pinging www.bass-associates.com [12.108.240.165] with 32 bytes of data:
Reply from 12.108.240.165: bytes=32 time=40ms TTL=241
Reply from 12.108.240.165: bytes=32 time=30ms TTL=241
Reply from 12.108.240.165: bytes=32 time=30ms TTL=241
Reply from 12.108.240.165: bytes=32 time=30ms TTL=241
Ping statistics for 12.108.240.165:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 30ms, Maximum = 40ms, Average = 32ms
C:\>tracert www.bass-associates.com
Tracing route to www.bass-associates.com [12.108.240.165]
over a maximum of 30 hops:
1 <10 ms <10 ms <10 ms PROTO1 [192.168.0.1]
2 <10 ms 30 ms 20 ms att-98-82-1.atl.mediaone.net [24.98.82.1]
3 10 ms 10 ms 40 ms rr-56-22-54.atl.mediaone.net [66.56.22.54]
4 51 ms 10 ms 40 ms rr-56-22-57.atl.mediaone.net [66.56.22.57]
5 10 ms 10 ms <10 ms rr-56-23-46.atl.mediaone.net [66.56.23.46]
6 10 ms 50 ms <10 ms stgsr01-POS2-0.atl.mediaone.net
[66.56.66.30]
7 10 ms 10 ms 10 ms 55-gsr2-POS3-0.atl.mediaone.net
[66.56.66.10]
8 10 ms 10 ms 10 ms 12.124.58.41
9 10 ms 10 ms 20 ms gbr6-p80.attga.ip.att.net [12.123.21.78]
10 10 ms 30 ms 10 ms gbr3-p80.attga.ip.att.net [12.122.5.46]
11 20 ms 20 ms 20 ms gbr4-p40.ormfl.ip.att.net [12.122.2.182]
12 20 ms 20 ms 40 ms gbr1-p90.ormfl.ip.att.net [12.122.5.126]
13 20 ms 20 ms 20 ms ar4-a3120s2.ormfl.ip.att.net [12.123.32.61]
14 30 ms 41 ms 30 ms 206.121.224.234
15 31 ms 40 ms 30 ms 12.108.240.165
Trace complete.
C:\>route print
===========================================================================
Interface List
0x1 ........................... MS TCP Loopback interface
0x3 ...00 02 e3 21 58 2c ...... NETGEAR FA311 Fast Ethernet PCI Adapter
===========================================================================
===========================================================================
Active Routes:
Network Destination Netmask Gateway Interface Metric
0.0.0.0 0.0.0.0 192.168.0.1 192.168.0.2 1
127.0.0.0 255.0.0.0 127.0.0.1 127.0.0.1 1
192.168.0.0 255.255.255.0 192.168.0.2 192.168.0.2 1
192.168.0.2 255.255.255.255 127.0.0.1 127.0.0.1 1
192.168.0.255 255.255.255.255 192.168.0.2 192.168.0.2 1
224.0.0.0 224.0.0.0 192.168.0.2 192.168.0.2 1
255.255.255.255 255.255.255.255 192.168.0.2 192.168.0.2 1
Default Gateway: 192.168.0.1
===========================================================================
Persistent Routes:
None
The traceroute's are identical with the exception of the first hop that the
winbox makes to the linux box.
The target (destination) box is a linux box too.
I give up. If you guys can ping it with no packet loss, I'm happy. If I
can't ping it from home because my config is screwed so be it. I can ping
the rest of the world just fine. And if you need more torture here's the
ping result by IP only (no hostname). I appreciate the assistance, but I'm
convinced that somehow it's the fault of DNS.
LINUX BOX:
[root at proto1 /root]# ping 12.108.240.174
PING 12.108.240.174 (12.108.240.174) from 24.98.82.217 : 56(84) bytes of
data.
64 bytes from 12.108.240.174: icmp_seq=0 ttl=51 time=24.888 msec
64 bytes from 12.108.240.174: icmp_seq=1 ttl=51 time=29.949 msec
64 bytes from 12.108.240.174: icmp_seq=2 ttl=51 time=29.963 msec
--- 12.108.240.174 ping statistics ---
3 packets transmitted, 3 packets received, 0% packet loss
round-trip min/avg/max/mdev = 24.888/28.266/29.963/2.396 ms
WINDOWS BOX:
C:\>ping 12.108.240.174
Pinging 12.108.240.174 with 32 bytes of data:
Reply from 12.108.240.174: bytes=32 time=30ms TTL=50
Reply from 12.108.240.174: bytes=32 time=30ms TTL=50
Reply from 12.108.240.174: bytes=32 time=30ms TTL=50
Ping statistics for 12.108.240.174:
Packets: Sent = 3, Received = 3, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 30ms, Maximum = 30ms, Average = 30ms
-----Original Message-----
From: tewkewl at mindspring.com [mailto:tewkewl at mindspring.com]
To: ale at ale.org
Sent: Monday, December 17, 2001 3:48 PM
To: cbergeron at bassemail.com
Cc: 'Ale'
Subject: Re: Re: [ale] can anyone explain this?
I really don't think it's dns.... I mean. you are resolving fine, and
resolving the same ip address in both pings. once you resolve, it stays in
the machines own cache for the time being, so you don't have to resolve on
each ping. What happens when you run ping against the ip address instead of
the name? From my external router, I sent 100 pings to you with a datagram
of 100 and a 2 second time out. I got a
100% response.
-Patrick
cbergeron at bassemail.com wrote:
> Here's an example of what I was talking about:
[root at proto1 /root]# ping -c 3 www.bass-associates.com
PING www.bass-associates.com (12.108.240.165) from 24.98.82.217 : 56(84)
bytes of data.
--- www.bass-associates.com ping statistics ---
3 packets transmitted, 1 packets received, 66% packet loss
round-trip min/avg/max/mdev = 29.307/29.307/29.307/0.000 ms
[root at proto1 /root]# ping -q -c 3 www.bass-associates.com
PING www.bass-associates.com (12.108.240.165) from 24.98.82.217 : 56(84)
bytes of data.
--- www.bass-associates.com ping statistics ---
3 packets transmitted, 3 packets received, 0% packet loss
round-trip min/avg/max/mdev = 29.554/29.827/29.972/0.239 ms
Pretty odd if you ask me. I think the problem is my secondary DNS, but
I'm not certain just yet. When I get home tonight, I will try tracing
the route from the Winbox and the Linbox to see how they differ (if at
all; I don't think they do).
---
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