ce-ping vsi

Function

The ce-ping vsi command checks CE connectivity on a VPLS network.

Format

ce-ping ip-address vsi vsi-name source-ip source-ip-address [ mac mac-address | count count | interval interval ] ^*

Parameters

Parameter	Description	Value
ip-address	Specifies a destination IP address.	Dotted decimal notation.
vsi vsi-name	Specifies the name of a VSI to be checked.	The value is a string ranging from 1 to 31.
source-ip source-ip-address	Specifies a source IP address.	Dotted decimal notation.
mac mac-address	Specifies an MAC address for CE ping. The MAC address is encapsulated into a packet as the source MAC address.	The value is in the range E024-7FA4-D2CB to E024-7FA4-D2DA. The MAC address must meet the following conditions: You can specify only one MAC address for a device. You must specify a specific MAC addresses for each device. The MAC address for CE ping must not be used by an interface. By default, the system automatically selects one MAC address from 16 MAC addresses for CE ping as the source MAC address and encapsulates it into a packet. The system may not select different MAC addresses for different devices. Therefore, you are advised to manually configure this parameter. If you run the mac-address blackhole command to configure an MAC address as a blackhole MAC address, the MAC address can no longer be specified as the MAC address for CE ping.
count count	Specifies the number of CE Ping request packets to be sent.	The value is an integer ranging from 1 to 255. The default value is 3.
interval interval	Specifies an interval at which request packets are sent.	The value is an integer ranging from 1 to 10, in seconds. The default value is 3.

Views

All views

Default Level

0: Visit level

Task Name and Operations

Task Name	Operations
sla	execute

Usage Guidelines

Usage Scenario

You can run the ce-ping vsi command to monitor local and remote CE connectivity on a VPLS network.

After you run the ce-ping vsi command, the source PE broadcasts ARP request packets and all users in a specified VSI receive the ARP request packets. If the source PE receives an ARP response packet from a user, it considers that the user is online.

Precautions

Because the VPLS network, a Layer 2 network, is neither aware of users' network segments nor has IP addresses, you must specify a source IP address so that the source PE broadcasts ARP request packets.

Note:

When you specify a source IP address, note the following points:

The source IP address must be on the same network segment as the destination IP address. If they are on different network segments, the destination node considers Address Resolution Protocol (ARP) request packets invalid and does not return ARP response packets.
The source IP address must be an unused IP address on the VPLS network. If you specify a used IP address for the source IP address, packets cannot be properly forwarded. As a result, the user with the specified IP address cannot access the Internet. If you specify a gateway IP address for the source IP address, all users cannot access the Internet.
To avoid the preceding problems, the system will inform you that you must use an unused IP address as the source IP address after running the ce-ping vsi command and instruct you to enter Y for confirmation.

Example

# Monitor CE connectivity with the following settings:

<HUAWEI> ce-ping 10.1.1.1 vsi abc source-ip 10.1.1.2 mac 00e0-fc12-5678 interval 2 count 5
Info: If the designated source IP address is in use, it could cause the abnormal data transmission in VPLS network. Are you sure the source-ip is unused in this VPLS? [Y/N]:y
Ce-ping is in process...
10.1.1.1 is used by 00e0-fc12-3456

**Table 1** Description of the **ce-ping vsi** command output
Item	Description
10.1.1.1 is used by 00e0-fc12-3456	The address 10.1.1.1 is reachable, and the corresponding MAC address is 00e0-fc12-3456.