IP Ping Test

This topic describes how to configure IP ping tests for testing network connectivity between wireless devices and transport devices.

Navigation Path

For RTN NEs, in the NE Explorer, choose Configuration > IP Ping Test from the navigation tree.

Context

In mobile backhaul scenarios, to diagnose a fault, engineers usually must find out on which network the fault occurred. As shown in Figure 1, NE 1 and NE 2 are transport NEs, and NodeB and RNC are wireless NEs. You can perform a near ping from NodeB to NE 1, a remote ping from NodeB to NE 2, and a pass-through ping from NodeB to RNC. The pings enable you to preliminarily locate the fault on the transport or wireless network.

Figure 1 Service Scenario

To perform a near ping from NodeB to NE 1, do as follows:
1. Enable the ping function on the near UNI port on NE 1 and set the next-hop IP address of NE 1 to the IP address of NodeB.
2. Configure the VLAN for the near UNI port on NE 1.
3. Initiate a ping operation from NodeB to the IP address of the near UNI port on NE 1.
To perform a remote ping from NodeB to NE 2, do as follows:
1. Enable the ping function on the near UNI port on NE 1 and set the next-hop IP address of NE 1 to the IP address of NodeB.
2. Configure the VLAN for the near UNI port on NE 1.
3. Configure the proxy IP address for the near UNI port on NE 1 as the IP address of the remote UNI port on NE 2.
4. Enable the ping function on the remote UNI port on NE 2. Skip the next-hop IP address setting.
5. Initiate a ping operation from NodeB to the IP address of the remote UNI port on NE 2.

Figure 2 shows the procedure for diagnosing a service fault.

Figure 2 Procedure for diagnosing a service fault

Button Description

Button	Description
Add	Add an IP ping test.
Start	Starts an IP ping test. The test result area displays the test results.
Stop	Stops an IP ping test.
Save As	Saves test results into a document.
Delete	Deletes the IP Ping test for a specified row of parameters.
Stop all Ip Ping	Stops the IP Ping test for all ports on the NE.

Parameter Description

**Table 1** Parameters required for configuring an IP ping test
Parameter	Value	Description
Port	Example: Shelf0(subrack)-2-54EG16-1(PORT-1)	Indicates the UNI port that responds to an IP ping test.
Status	Enabled, Disabled	Specifies whether to enable the IP ping function for a UNI port. The UNI port responds to IP ping tests only when this parameter is set to Enabled. If you want to test the connectivity of a link, enable the IP ping function for all ports on the link. If this parameter is set to Disabled, you do not need to set other parameters.
Encapsulation Type	QinQ, 802.1Q, Null	Indicates the encapsulation type of the UNI port. The options are as follows: Null: The port transparently transmits packets. 802.1Q: The port identifies packets that are compliant with the IEEE 802.1Q standard. QinQ: The port identifies packets that are compliant with the IEEE 802.1ad QinQ standard. NOTE: If Encapsulation Type is set to Null or QinQ, the following four parameters can be set: Outer VLAN ID, Outer VLAN Priority, Inner VLAN ID, and Inner VLAN Priority. If Encapsulation Type is set to 802.1Q, only Outer VLAN ID and Outer VLAN Priority can be set.
Outer VLAN ID	/, 0-4095	Indicates the outer VLAN ID of the UNI port. NOTE: If Outer VLAN ID is set to /, the port does not identify packets by VLAN ID. If Encapsulation Type is set to Null or QinQ, Outer VLAN ID is an S-VLAN ID. If Encapsulation Type is set to 802.1Q, Outer VLAN ID is a C-VLAN ID.
Outer VLAN Priority	0-7	Indicates the outer VLAN priority of the UNI port. NOTE: If Outer VLAN ID is set to /, Outer VLAN Priority does not take effect.
Inner VLAN ID	/, 0-4095	Indicates the inner VLAN ID of the UNI port. NOTE: If Inner VLAN ID is set to /, the port does not identify packets by VLAN ID. If Encapsulation Type is set to Null or QinQ, Inner VLAN ID is a C-VLAN ID.
Inner VLAN Priority	0-7	Indicates the inner VLAN priority of the UNI port. NOTE: If Inner VLAN ID is set to /, Inner VLAN Priority does not take effect.
IP Address	Example: 126.9.12.10	Sets the IP address of the UNI port that responds to the IP ping test.
IP Mask	Example: 255.255.255.0	Sets the IP mask. IP Mask and the subnet mask of the UNI port must be the same.
Next Hop IP Address	Example: 126.9.12.11	Sets the IP address of the wireless device directly connected to the UNI port.
Next Hop IP Mask	Example: 255.255.255.0	Sets the subnet mask of the wireless device directly connected to the UNI port.
No.	1 to 16	Indicates the No. of IP Ping test. A maximum of six IP ping tests can be performed at the same time.
Port	Example: 3-EM6T-4(Port-4)	Indicates the port that initiates the IP ping test.
Destination IP Address	Example: 10.10.10.2	Indicates the destination IP address of the IP ping test.
Direction	Local End, Remote End Default: Local End	Specifies whether the NE is the local end or the remote end of the IP ping test.
Number of Packets	1-65535 Default: 3	Indicates the number of IP ping test packets.
Packet Length(bytes)	64-1400	Indicates the length of IP ping test packets. The ping test fails when the packet length is greater than the MTU of ports and services and less than the length required by Echo Request packets.
Timeout Period(s)	2s, 10s Default: 2s	Indicates the timeout period of the IP ping test. The ping test fails if the response packet is not received within the timeout period.
ToS	0-255 Default: 0	Indicates the type of service of the IP ping test. This setting prevents test packets from being regarded as low-priority and therefore being discarded by the QoS mechanism.
Test Result(Only the latest 500 records can be displayed. Clicking save as can save the latest 10,000 records.)	Character string	Indicates the test results.

**Table 2** Parameters required for configuring a proxy IP address list
Parameter	Value	Description
No.	Example: 1	Indicates the sequence number of a proxy IP address.
IP Address	Example: 126.9.12.15	Indicates the proxy IP address. In transport networks, IP addresses of edge NEs can be used as the proxy IP address.

**Table 3** Parameters required for configuring ARP entries
Parameter	Value	Description
No.	Example: 1	Indicates the sequence number of an ARP entry of the port.
IP Address	Example: 10.10.10.2	Indicates the IP address that the remote NE returns based on an ARP request packet.
MAC Address	Example: 4C-1F-CC-A6-2F-ED	Indicates the MAC address that the remote NE returns based on an ARP request packet. The NE initiating the IP ping test must support the non-strict ARP learning mode. That is, the local NE must be able to learn MAC addresses based on ARP request packets.