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Pinging Layer 3 VPNs

Enter the ping mpls l3vpn command with the following syntax. Table 203 describes the ping mpls l3vpn command options.

user@host> ping mpls l3vpn prefix prefix-name  <l3vpn-name> <bottom-label-ttl> <exp forwarding-class> <count number> <source source-address> <detail>

To quit the ping mpls l3vpn command, press Ctrl-C.

Alternatively, you can use the J-Web interface. (See Checking MPLS Connections from the J-Web Interface.)

Table 203: CLI ping mpls l3vpn Command Options

Option	Description
l3vpn prefix prefix-name	Pings the remote host specified by the prefix to verify that the prefix is present in the PE router's VPN routing and forwarding (VRF) table. This option does not test the connectivity between a PE router and a CE router.
l3vpn-name	(Optional) Layer 3 VPN name.
bottom-label-ttl	(Optional) Displays the time-to-live (TTL) value for the bottom label in the MPLS label stack.
exp forwarding-class	(Optional) Specifies the value of the forwarding class to be used in the MPLS ping packets.
countnumber	(Optional) Limits the number of ping requests to send. Specify a count from 0 through 1,000,000. The default value is 5. If you do not specify a count, ping requests are continuously sent until you press Ctrl-C.
source source-address	(Optional) Uses the source address that you specify, in the ping request packet.
detail	(Optional) Displays detailed output about the echo requests sent and received. Detailed output includes the MPLS labels used for each request and the return codes for each request.

Following is sample output from a ping mpls l3vpn command:

user@host> ping mpls l3vpn vpn1 prefix
10.255.245.122/32

!!!!!
--- lsping statistics ---
5 packets transmitted, 5 packets received, 0% packet loss

The fields in the display are the same as those displayed by the J-Web ping MPLS diagnostic tool. For information, see Ping MPLS Results and Output.

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