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Full Discussion: Ping response
Operating Systems AIX Ping response Post 302462419 by shockneck on Thursday 14th of October 2010 07:26:27 AM
Old 10-14-2010
Quote:
Originally Posted by vjm
[...]ping time=0.120ms

how we can achive this in aix. i need this for a latency check.[...]
You can combine ping with tcpdump which returns fine timestamps. Example:
Code:
(0)aserver:/home/root 6# tcpdump -i en0 ip proto \\icmp and host 192.168.100.>
tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
listening on en0, link-type 1, capture size 96 bytes
13:02:52.362347 IP aserver > remotebox: icmp 64: echo request seq 229
13:02:52.362575 IP remotebox > aserver: icmp 64: echo reply seq 229
13:02:53.362751 IP aserver > remotebox: icmp 64: echo request seq 230
13:02:53.362981 IP remotebox > aserver: icmp 64: echo reply seq 230
13:02:54.363136 IP aserver > remotebox: icmp 64: echo request seq 231
13:02:54.363449 IP remotebox > aserver: icmp 64: echo reply seq 231
13:02:55.364265 IP aserver > remotebox: icmp 64: echo request seq 232
13:02:55.364501 IP remotebox > aserver: icmp 64: echo reply seq 232

45 packets received by filter
0 packets dropped by kernel
(0)aserver:/home/root 7#

Use the two timestamps of the packets that share same sequence number to calculate round trip time. A granularity of six digits behind the full second should be good enough (as long as you do not work with HPC stock trading apps Smilie )
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IPSEC_IKEPING(8)						  [FIXME: manual]						  IPSEC_IKEPING(8)

NAME
ipsec_ikeping - send/receive ISAKMP/IKE echo requests/replies SYNOPSIS
ipsec ikeping [--listen] [--verbose] [--wait time] [--exchangenum num] [--ikeport localport] [--ikeaddress address] [--inet] [--inet6] destaddr [/dstport...] DESCRIPTION
Ikeping sends and receives ISAKMP/IKE echo request and echo reply packets. These packets are intended for diagnostics purposes, in a manner similar to ping(8) does for ICMP echo request/reply packets. At the time of this writing, the ISAKMP echo request/reply exchange is still an internet-draft (draft-richardson-ipsec-ikeping-00), and is therefore completely non-standard. The Openswan IKE daemon pluto does implement this draft, so ikeping can be used to test connectivity to an openswan ipsec server. Ikeping will bind to the local address given by --ikeaddress and the port number given by --ikeport defaulting to the wildcard address and the ISAKMP port 500. An ISAKMP exchange of type 244 (a private use number) is sent to each of the address/ports listed on the command line. The exchange number may be overridden by the --exchangenum option. Ikeping then listens for replies, printing them as they are received. Replies are of exchange type 245 or the specified exchange number plus 1. Ikeping will keep listening until it either receives as many echo responses as it sent, or until the timeout period (5 seconds) has been reached. Receipt of a packet will reset the timer. The --wait option can be used to specify a different timeout period. If the --listen option is given, then ikeping will not send any packets. Instead, it will listen for them and reply to each request received. If the --natt option is given, then ikeping will set the socket to permit UDP encapsulated ESP packets. This is only useful in listen mode. FILES
no external files SEE ALSO
ping(8), ipsec_pluto(8) HISTORY
Written for the Linux FreeS/WAN project <http://www.freeswan.org> by Michael Richardson. [FIXME: source] 10/06/2010 IPSEC_IKEPING(8)
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