Print this pagePrint this page

Email this topicEmail this topic

View PDFView PDF

Download EPUBDownload EPUB

ping

Use this command to determine the availability of another node on the network by sending the node an ICMP echo-request packet and receiving an ICMP echo-reply back.

Syntax

ping [-s bytes] [-c count] [-n] [-p pattern] [-t milliseconds] [-I interface] [-S ip-address] [-Q service-type] [-r] [-i milliseconds] [-v {4 | 6}] [-V router] host

Parameters

-s bytes (Optional) Specifies the number of data bytes to be sent. The default value is 56, which translates into 64 ICMP/ICMP6 data bytes when combined with the 8 bytes of ICMP/ICMP6 header data. The maximum data size for IPv4 is 65507 bytes. The maximum data size for IPv6 is 65487 bytes.
-c count (Optional) Number of ping packets. The default value is 4.
-n (Optional) Avoids any communications with nameservers. An IP address has to be supplied as a hostname if this option is used.
-p pattern (Optional) Specify up to a 16 bit hexadecimal pattern to fill outgoing packet with (ex. -p ff).
-t hops (Optional) Specifies the maximum number of hops for the ping. Time To Live (TTL) for IPv4; Hop Limit (HL) for IPv6. The default value for both Time TTL and HL is 64.
-I interface (Optional) Source IP Interface. Valid values are IP interfaces, for example vlan.0.5 for VLAN 5.
-S ip-address (Optional) Source IP address.
-Q service-type (Optional) Specifies the Type of Service in the IPv4 header or the traffic class in the IPv6 header. Valid Range: 0 - 255. The default value is 0.
-r (Optional) Bypass the normal routing tables and send directly to a host on an attached network.
-i (Optional) Specifies the time in milliseconds to wait for ping timeouts and between sending ping packets. The default value is 1 second.
-v (Optional) Forces ping to a specific ip version. Valid Values: 4: Use IPv4 ping, 6: Use IPv6 ping. The default value is auto-detect. Auto-detect is not configurable.
-V router (Optional) Specify a virtual router name for this ping. The default value is 0 (default router).
host Specifies the IP address or a hostname of the receiving device.

Defaults

  • If -s is not specified, the number of data bytes sent is 56.
  • If -c is not specified, the number of ping packets is 4.
  • If -I is not specified, the route table chooses the source IP interface.
  • If -n is not specified, communication with name servers is not avoided.
  • If -p is not specified, no hexadecimal pattern is used to fill the outgoing packet.
  • If -t is not specified, the maximum number of hops for the ping is 64.
  • If -S is not specified the source IP address is the address belonging to the management interface.
  • If -Q is not specified, the type of service or traffic class is 0.
  • If -r is not specified, the routing tables are not bypassed when forwarding to a host on an attached network.
  • If -S is not specified, the route table chooses the source IP address.
  • If -i is not specified, the ping timeout and time between pings is 1 second.
  • If -v is not specified, the IP version is auto-detected (not configurable).
  • If -V is not specified, the virtual router to forward the ICMP echo-reply to is 0 (default router).

Mode

All command modes.

Example

This example shows how to ping IP address 127.0.0.1 with 10 packets:

System(rw)->ping -c 10 127.0.0.1
PING 127.0.0.1 (localhost) 64 bytes of data.
64 bytes from 127.0.0.1 (localhost): icmp_seq=0 ttl=64 time=1.58 ms
64 bytes from 127.0.0.1 (localhost): icmp_seq=1 ttl=64 time=1.52 ms
64 bytes from 127.0.0.1 (localhost): icmp_seq=2 ttl=64 time=1.57 ms
64 bytes from 127.0.0.1 (localhost): icmp_seq=3 ttl=64 time=2.26 ms
64 bytes from 127.0.0.1 (localhost): icmp_seq=4 ttl=64 time=1.42 ms
64 bytes from 127.0.0.1 (localhost): icmp_seq=5 ttl=64 time=2.44 ms
64 bytes from 127.0.0.1 (localhost): icmp_seq=6 ttl=64 time=1.61 ms
64 bytes from 127.0.0.1 (localhost): icmp_seq=7 ttl=64 time=1.40 ms
64 bytes from 127.0.0.1 (localhost): icmp_seq=8 ttl=64 time=2.32 ms
64 bytes from 127.0.0.1 (localhost): icmp_seq=9 ttl=64 time=1.54 ms
--- 127.0.0.1 ping statistics ---
10 packets transmitted, 10 received, 0% packet loss, time 8997 ms
rtt min/avg/max = 1/1/2 ms
System(rw)->
Published May 2016prev | next

Email this topicEmail this topic

Print this pagePrint this page