mturoute.exe - Debug the MTU values between you and a host.
Current Version (v2.5) from 2011-8-8:
Can be downloaded right here: mturoute.exe or as a zip file which includes source code here: mturoute_v2_5.zip
Description:
C:\>mturoute.exe www.hinet.net
* ICMP Fragmentation is not permitted. *
* Speed optimization is enabled. *
* Maximum payload is 10000 bytes. *
- ICMP payload of 1472 bytes is too big.
+ ICMP payload of 92 bytes succeeded.
+ ICMP payload of 782 bytes succeeded.
+ ICMP payload of 1127 bytes succeeded.
+ ICMP payload of 1299 bytes succeeded.
+ ICMP payload of 1385 bytes succeeded.
+ ICMP payload of 1428 bytes succeeded.
+ ICMP payload of 1450 bytes succeeded.
- ICMP payload of 1461 bytes is too big.
- ICMP payload of 1455 bytes is too big.
+ ICMP payload of 1452 bytes succeeded.
- ICMP payload of 1453 bytes is too big.
Path MTU: 1480 bytes.
* ICMP Fragmentation is not permitted. *
* Speed optimization is enabled. *
* Maximum payload is 10000 bytes. *
- ICMP payload of 1472 bytes is too big.
+ ICMP payload of 92 bytes succeeded.
+ ICMP payload of 782 bytes succeeded.
+ ICMP payload of 1127 bytes succeeded.
+ ICMP payload of 1299 bytes succeeded.
+ ICMP payload of 1385 bytes succeeded.
+ ICMP payload of 1428 bytes succeeded.
+ ICMP payload of 1450 bytes succeeded.
- ICMP payload of 1461 bytes is too big.
- ICMP payload of 1455 bytes is too big.
+ ICMP payload of 1452 bytes succeeded.
- ICMP payload of 1453 bytes is too big.
Path MTU: 1480 bytes.
# 路徑上最大MTU為1480,mss為1452
C:\>mturoute.exe -t www.hinet.net
mturoute to www.hinet.net, 30 hops max, variable sized packets
* ICMP Fragmentation is not permitted. *
* Speed optimization is enabled. *
* Maximum payload is 10000 bytes. *
1 +- host: 192.168.2.254 max: 1500 bytes
2 -+++++++--+- host: 168.95.98.254 max: 1480 bytes
3 +- host: 168.95.144.86 max: 1480 bytes
4 +- host: 220.128.16.142 max: 1480 bytes
5 +- host: 220.128.3.102 max: 1480 bytes
6 +- host: 220.128.3.145 max: 1480 bytes
7 +- host: 211.22.41.237 max: 1480 bytes
8 No response from traceroute for this TTL. Tried 3 times
9 +- host: 202.39.224.7 max: 1480 bytes
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http://blog.xuite.net/u870q217/blog/47195684-PMTU+Discovery%E6%A6%82%E8%BF%B0
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