Step 6: Ping the Channelized Interface

Purpose

Use the ping command to verify the loopback connection.

Action

To ping the local interface, use the following JUNOS CLI operational mode commands:

user@host> ping interface ds-fpc/pic/port:channel:channel | 
t1-fpc/pic/port:channel local-IP-address bypass-routing count 1000 rapid

Sample Output

user@host> ping interface t1-2/1/0:7 192.168.126.29 bypass-routing count 1000 
rapid    

PING 192.168.126.29 (192.168.126.29 ): 56 data bytes

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

--- 192.168.126.29 ping statistics ---

1000 packets transmitted, 1000 packets received, 0% packet loss

round-trip min/avg/max/stddev = 6.068/7.475/74.080/3.696 ms

What It Means

This command sends 1000 ping packets out of the channelized interface under the Multichannel DS-3 port to the local IP address. The ping should complete successfully with no packet loss. If there is any persistent packet loss, open a case with the Juniper Networks Technical Assistance Center (JTAC) at support@juniper.net, or at 1-888-314-JTAC (within the United States) or 1-408-745-9500 (from outside the United States).