Juniper JUNOSE 11.1.X - COMMAND REFERENCE N TO Z 4-6-2010 Command Reference Manual page 234

JUNOSe 11.1.x Command Reference Guide N to Z
Privileged Exec, User Exec
Mode
192
ping
interfaceType Interface type of a destination address on the router that is
connected for external loopback by means of a cable or plug that loops Tx
to Rx. The command succeeds only if the specified interface is connected
for external loopback and the encapsulation type is ATM, Frame Relay,
HDLC, or PPP. The command does not work for Ethernet or VLAN
encapsulations.See Interface Types and Specifiers on page 5
interfaceSpecifier Particular interface of a destination address on the router
that is connected for external loopback by means of a cable or plug that
loops Tx to Rx. The command succeeds only if the specified interface is
connected for external loopback and the encapsulation type is ATM, Frame
Relay, HDLC, or PPP. The command does not work for Ethernet or VLAN
encapsulations.Format varies according to interface type; see Interface Types
and Specifiers on page 5
trafficClass Specifies the traffic class value to match in the Traffic Class
field of each IPv6 packet header, in the range 1 to 255
flowLabel Specifies the flow label value to match in the Flow Label field of
each IPv6 packet header, in the range 1 to 1048576