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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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SHOREWALL-TCFILTERS(5)						  [FIXME: manual]					    SHOREWALL-TCFILTERS(5)

NAME
tcfilters - Shorewall u32 classifier rules file SYNOPSIS
/etc/shorewall/tcfilters DESCRIPTION
Entries in this file cause packets to be classified for traffic shaping. Beginning with Shorewall 4.4.15, the file may contain entries for both IPv4 and IPv6. By default, all rules apply to IPv4 but that can be changed by inserting a line as follows: IPV4 Following entries apply to IPv4. IPV6 Following entries apply to IPv6 ALL Following entries apply to both IPv4 and IPv6. Each entry is processed twice; once for IPv4 and once for IPv6. The columns in the file are as follows (where the column name is followed by a different name in parentheses, the different name is used in the alternate specification syntax). CLASS - interface:class The name or number of an interface defined in shorewall-tcdevices[1](5) followed by a class number defined for that interface in shorewall-tcclasses[2](5). SOURCE - {-|address} Source of the packet. May be a host or network address. DNS names are not allowed. DEST - {-|address}} Destination of the packet. May be a host or network address. DNS names are not allowed. You may exclude certain hosts from the set already defined through use of an exclusion (see shorewall-exclusion[3](5)). PROTO - {-|protocol-number|protocol-name|all} Protocol. DEST PORT (dport) - [-|port-name-or-number] Optional destination Ports. A Port name (from services(5)) or a port number; if the protocol is icmp, this column is interpreted as the destination icmp-type(s). SOURCE PORT (sport) - [-|port-name-or-number] Optional source port. TOS (Optional) - [-|tos] Specifies the value of the TOS field. The tos value can be any of the following: o tos-minimize-delay o tos-maximuze-throughput o tos-maximize-reliability o tos-minimize-cost o tos-normal-service o hex-number o hex-number/hex-number The hex-numbers must be exactly two digits (e.g., 0x04)x. LENGTH - [-|number] Optional - Must be a power of 2 between 32 and 8192 inclusive. Packets with a total length that is strictly less than the specified number will match the rule. EXAMPLE
Example 1: Place all 'ping' traffic on interface 1 in class 10. Note that ALL cannot be used because IPv4 ICMP and IPv6 ICMP are two different protocols. #CLASS SOURCE DEST PROTO DEST # PORT IPV4 1:10 0.0.0.0/0 0.0.0.0/0 icmp echo-request 1:10 0.0.0.0/0 0.0.0.0/0 icmp echo-reply IPV6 1:10 ::/0 ::/0 icmp6 echo-request 1:10 ::/0 ::/0 icmp6 echo-reply FILES
/etc/shorewall/tcfilters SEE ALSO
http://shorewall.net/traffic_shaping.htm http://shorewall.net/MultiISP.html http://shorewall.net/PacketMarking.html http://shorewall.net/configuration_file_basics.htm#Pairs shorewall(8), shorewall-accounting(5), shorewall-actions(5), shorewall-blacklist(5), shorewall-ecn(5), shorewall-exclusion(5), shorewall-hosts(5), shorewall_interfaces(5), shorewall-ipsets(5), shorewall-maclist(5), shorewall-masq(5), shorewall-nat(5), shorewall-netmap(5), shorewall-params(5), shorewall-policy(5), shorewall-providers(5), shorewall-proxyarp(5), shorewall-rtrules(5), shorewall-routestopped(5), shorewall-rules(5), shorewall.conf(5), shorewall-secmarks(5), shorewall-tcclasses(5), shorewall-tcdevices(5), shorewall-tos(5), shorewall-tunnels(5), shorewall-zones(5) NOTES
1. shorewall-tcdevices http://www.shorewall.net/manpages/shorewall-tcdevices.html 2. shorewall-tcclasses http://www.shorewall.net/manpages/shorewall-tcclasses.html 3. shorewall-exclusion http://www.shorewall.net/manpages/shorewall-exclusion.html [FIXME: source] 06/28/2012 SHOREWALL-TCFILTERS(5)
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