Just a note. Your TTL values in parentheses would be wrong... Traceroute
by default will start with a TTL = 1, which will get an ICMP TTL-Exceeded
message (because it counts down, and 0 is bad).
Even if it counted up, you have 7 hops listed before you show TTL=250. So
that wouldn't be possible anyway.
Scott
-----Original Message-----
From: Jim Warner [mailto:warner@cats.UCSC.EDU]
Sent: Sunday, December 02, 2001 1:28 AM
To: bbruins@cisco.com; cisco-nsp@puck.nether.net; warner@cats.UCSC.EDU
Subject: Re: packet duplication
> What happens on a traceroute?
Good question. Implimentations that care about TTL values
complain when they pass this router. Running solaris snoop
during a trace shows that the (un)expected extra replies are
being received and ignorred by the program.
traceroute to www.santacruz.k12.ca.us (205.155.8.128): 1-30 hops, 38 byte
packets
1 comm-g-129.ucsc.edu (128.114.129.252) 33.5 ms 1.76 ms 1.66 ms
2 frontdoor-GE1-0-0.ucsc.edu (128.114.103.1) 0.772 ms 0.679 ms 0.593 ms
3 STAN--UCSC-gw.ATM.calren2.net (198.32.249.45) 3.23 ms 3.28 ms 3.36 ms
4 SUNV--STAN.POS.calren2.net (198.32.249.73) 3.65 ms 3.42 ms 3.31 ms
5 QSV-GSR--C2-QSV-GSR.CSU.net (137.145.11.5) 3.43 ms 3.65 ms 3.61 ms
6 WEGSR-QSVGSR-ATM.CSU.net (137.145.202.126) 22.6 ms 22.7 ms 22.9 ms
7 QAnhGSR-WestEdGSR-ATM.CSU.net (137.145.203.2) 23.5 ms 24.0 ms 24.7 ms
8 DCP-QANH-GSR.GE.calren2.net (137.164.12.33) 23.9 ms (ttl=250!) 23.7 ms
(ttl=250!) 24.0 ms (ttl=250!)
9 WE-DCP--QANH-DCP-ATM.calren2.net (137.164.14.14) 25.3 ms (ttl=249!)
24.7 ms (ttl=249!) 24.4 ms (ttl=249!)
10 SLO-DCP--WE-DCP-ATM.calren2.net (137.164.14.13) 40.2 ms (ttl=248!)
39.7 ms (ttl=248!) 39.8 ms (ttl=248!)
11 QSal1-DCP--SLO-DCP-ATM.calren2.net (137.164.14.27) 43.0 ms (ttl=247!)
43.0 ms (ttl=247!) 41.9 ms (ttl=247!)
12 DCP-SCCOE-7507--DCP-QSAL-GSR1.DS3.calren2.net (137.164.2.153) 49.2 ms
(ttl=246!) 49.4 ms (ttl=246!) 49.8 ms (ttl=246!)
13 198.189.240.73 (198.189.240.73) 49.8 ms (ttl=245!) 49.2 ms (ttl=245!)
49.1 ms (ttl=245!)
14 ns.santacruz.k12.ca.us (205.155.7.2) 50.5 ms (ttl=244!) * 49.8 ms
(ttl=244!)
This archive was generated by hypermail 2b29 : Sun Aug 04 2002 - 04:13:25 EDT