The ICMP echo packets are (hopefully) traversing the same path at slightly
different times. If the load on a segment varies, then the amount of time
that segment delays the packet will also vary.
Use driving as an example:
If it weree a perfect world,
I drive From point a to point B it takes 5 minutes.
I drive From point a to point B to point C it takes 10 minutes.
But it's not a perfect world, and I get stuck behind some little old
Gray-haired Lady in a 1972 Impala (Big Car <-> Big Packets) driving 45 in a
70, then it's going to take longer to get from point A to Point B.
Thusly, even though only on part of my trip was slower than normal, the
entire round trip is affected.
Hope This helps,
[EMAIL PROTECTED]
Ejay Hire
CCNA (Bored to tears) and seeking internetworking Employment.
----Original Message Follows----
From: "Yee, Jason" <[EMAIL PROTECTED]>
Reply-To: "Yee, Jason" <[EMAIL PROTECTED]>
To: "cisco@groupstudy. com (E-mail)" <[EMAIL PROTECTED]>
Subject: trace route results
Date: Fri, 29 Sep 2000 02:21:33 -0500
hi all,
If trace route results are cumulative then how come the 11th hop shows
higher latency time than 12th hop
Type escape sequence to abort.
Tracing the route to 202.159.96.0
1 nero-eugene-hub.oregon-ix.net (198.32.162.2) [AS 2914] 0 msec 0 msec 0
msec
2 eugn-core1-gw.nero.net (207.98.64.162) [AS 3701] 0 msec 0 msec 4 msec
3 xcore2-serial0-1-0-0.SanFrancisco.cw.net (204.70.32.5) [AS 3561] 12
msec
12 msec 12 msec
4 core9.SanFrancisco.cw.net (204.70.9.81) [AS 3561] 12 msec 12 msec 12
msec
5 cw-gw.sffca.ip.att.net (192.205.31.13) [AS 7018] 88 msec 84 msec 88
msec
6 gbr2-p11.sffca.ip.att.net (12.123.12.242) [AS 7018] 84 msec 88 msec 84
msec
7 gar1-p370.sffca.ip.att.net (12.123.13.61) [AS 7018] 84 msec 84 msec 84
msec
8 12.123.195.21 [AS 7018] 144 msec 148 msec 148 msec
9 12.125.94.6 [AS 7018] 144 msec 148 msec 152 msec
10 202.161.130.21 [AS 11919] 152 msec 144 msec 152 msec
11 202.161.128.38 [AS 11919] 1132 msec 688 msec 756 msec
12 Subnet-Gateway.indo.net.id (202.159.33.32) [AS 4622] 716 msec 720 msec
796 msec
13 * * *
14 * * *
15 * * *
16 * * *
17 * * *
18 * * *
19 * õ trace route times are cumulative
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