Specifications

Checking Basic Connectivity
ExtremeWare XOS 11.0 Concepts Guide 37
In addition, the nslookup utility can be used to return the IP address of a hostname.
You can specify up to eight DNS servers for use by the DNS client using the following command:
configure dns-client add
You can specify a default domain for use when a host name is used without a domain. Use the
following command:
configure dns-client default-domain
For example, if you specify the domain xyz-inc.com as the default domain, then a command such as
ping accounting1 will be taken as if it had been entered ping accounting1.xyz-inc.com.
Checking Basic Connectivity
The switch offers the following commands for checking basic connectivity:
• ping
• traceroute
Ping
The ping command enables you to send Internet Control Message Protocol (ICMP) echo messages to a
remote IP device. The
ping command is available for both the user and administrator privilege level.
The ping command syntax is:
ping {count <count> {start-size <start-size>} | continuous {start-size <start-size> |
{start-size <start-size> {end-size <end-size>}}} {udp} {dont-fragment} {ttl <ttl>}
{tos <tos>} {interval <interval>} {vr <vrid>} <host> {from <source IP address>} {with
record-route}
Options for the ping command are described in Table 8.
Table 8: Ping command parameters
Parameter Description
count Specifies the number of ping requests to send.
start-size Specifies the size, in bytes, of the packet to be sent, or the starting size if
incremental packets are to be sent.
continuous Specifies that UDP or ICMP echo messages to be sent continuously. This option can
be interrupted by pressing [Ctrl] + C.
end-size Specifies an end size for packets to be sent.
udp Specifies that the ping request should use UDP instead of ICMP.
dont-fragment Sets the IP to not fragment the bit.
ttl Sets the TTL value.
tos Sets the TOS value.
interval Sets the time interval between sending out ping requests.
vr Specifies the virtual route to use for sending out the echo message. If not specified,
the virtual router assigned to the default VLAN is used.