Tunnel MEP

In this user interface, you can set and query the maintenance entity group end point (MEP) parameters of MPLS-TP tunnel operation, administration, and maintenance (OAM).

Navigation Path

In the NE Explorer, select an NE and choose Configuration > Packet Configuration > MPLS Management > Unicast Tunnel Management from the Function Tree. Click the MPLS-TP OAM tab and then the MEP tab.

Button Description

Button		Description
OAM Operation		Maintains the OAM, including, starting the CC check, LB test, ping test, traceroute test, and querying LSP status. NOTE: The MPLS OAM mechanism can effectively detect, confirm, and locate the internal defects of an MPLS-layer network, and can therefore monitor the network performance. The equipment can trigger protection switching based on the OAM detection status to implement quick fault detection and service protection.

Shortcut Menu Description

Shortcut Menu	Description
Alarm Suppression	The alarms will not be reported to the Web LCT or to the NEs where the tunnels reside.
Start CC	Starts the Continuity Check (CC) to detect the connectivity between two ends of an LSP or PW. NOTE: The CC function only detects connectivity of two MEPs in the same MEG. The MIPs are transparent to CCMs, and do not respond to CCM packets.
Stop CC	Stops the CC check.
Start LB	Starts an LB test to check the connectivity of a tunnel, which facilitates fault locating and rectification.
Query LSP Status	Queries the LSP status.
Ping Test	Detects the connectivity between the source and sink of a tunnel.
Traceroute Test	Detects the connectivity between any two neighboring nodes on a tunnel. A traceroute test checks the node connectivity by returning the response packets of each node on the tunnel.

Parameter Description

**Table 1** MEP parameters
Parameter	Value	Description
Tunnel ID	Example: 3	Indicates the tunnel ID.
Tunnel Name	String	Indicates the name of a tunnel.
Node Type	Ingress, Egress	Indicates the type of a node. Ingress: Ingress node. Egress: Egress node.
Tunnel Direction	Bidirectional, Unidirectional	Indicates the direction of a tunnel.
Reverse Tunnel ID	Example: 3(Source Node:1.1.81.3, Sink Node:1.1.91.10)	Indicates the ID of a reverse tunnel. NOTE: The ID of reverse tunnel includes the LSR IDs of the source node and sink node.
OAM Status	Disabled, Enabled	Indicates the OAM status. This parameter can be set. The default value is Disabled. In non-IP mode, configure MEG ID, MEP ID, and the peer MEP ID before you enable the OAM function. Enabled: OAM-related operations can be performed. Disabled: OAM-related operations cannot be performed.
MEG ID Type	IP Based, ICC Based, Customer Based	IP Based: Indicates the default MEG ID type of PTN equipment. It is used to generate MEG IDs automatically. ICC Based: Indicates the MEG ID type defined by the Y.1731 recommendation. Customer Based: Indicates the MEG ID type used for interconnection with equipment from special vendors. The MEG ID Type must be the same at the source and the sink ends.
MEG ID	Example: 5	Indicates the MEG ID. MEG ID varies with MEG ID Type. When MEG ID Type is set to IP Based, MEG ID, MEP ID, and RMEP ID are generated automatically. When MEG ID Type is set to ICC Based, MEG ID is a character string with letters and numbers, and contains 1 to 13 bytes. When MEG ID Type is set to Customer Based, MEG ID consists of 96 characters that represent 48 hexadecimal numbers. The default value is a character string consisting of 96 zeros. You can set MEG ID to any character strings that consist of only letters (a-f) and digits (0-9).
MEG Level	0, 1, 2, 3, 4, 5, 6, 7	Indicates the MEG priority. The value 7 indicates the highest priority.
MEP ID	1 to 8191	Indicates the MEP ID. The MEP ID at the source must be the same with the RMEP ID at the sink ends.
RMEP ID	1 to 8191	Indicates the RMEP ID. The RMEP ID at the source must be the same with the MEP ID at the sink ends.
Detection Mode	Adaptive, Manual	Indicates the detection mode. Manual: The frequency set by the user is used to test the connectivity of the tunnel. Adaptive: The frequency of the received packets is used to test the connectivity of the tunnel. NOTE: Detection Mode is available only for unidirectional tunnels in the egress direction and bidirectional tunnels. The parameter cannot be set for the unidirectional tunnel in the ingress direction.
CC Status	Start, Stop	Indicates the status of the CC check.
CC Packet Priority	0, 1, 2, 3, 4, 5, 6, 7	Sets and Indicates the CC packet priority. Value 0 indicates the lowest priority, and value 7 indicates the highest priority.
CC Packet Interval	3.33ms, 10ms, 100ms, 1s, 10s, 60s, 600s	Sets and Indicates the interval of transmitting detection packets.For unidirectional tunnels in the egress direction, CC Packet Interval can be set only when Detection Mode is set to Manual.
Lock Status	Unlock, Lock	Specifies whether the LCK function is enabled. If this function is enabled and when a TST test that interrupts services is performed, LCK packets will be sent to notify users that the service interruption is caused by the TST test. NOTE: Lock Status can be set for bidirectional tunnels only.
AIS Status	Enabled, Disabled	AIS is a type of fault signal between NEs. If the AIS function is enabled, alarms are only generated at the server layer not at the client layer when faults occur at the server layer. For example, when faults occur in tunnels, AIS packets will be sent and AIS alarms will be generated at the PW layer. NOTE: AIS Status is unavailable for unidirectional tunnels.
Local LSP Status	Initialized, Near-End Available, Near-End Defect Available, Near-End Defect Unavailable, Near-End Unavailable	Indicates the local LSP operating status.
Local LSP Defect Type	dServer, dPeerME, dLOCV, dExcess, dUnExpPer, dUnExpMeg, dUnExpMep	Indicates the local LSP defect type.
Local LSP Disabled Duration(ms)	0 to 300000	Indicates the duration of the disable status of the LSP. Local Disable Duration indicates the duration when the tunnel is unavailable.
Local LSP Defect Location	Example: 192.168.11.1	Indicates the local LSP defect location. Local Defect Location identifies the location of the defect in the network by using the IP address.
Remote LSP Status	Remote Available, Remote Defect Available, Remote Defect Unavailable, Remote Unavailable	Indicates the remote LSP operating status.
Remote LSP Defect Type	dServer, dPeerME, dLOCV, dExcess, dUnExpPer, dUnExpMeg, dUnExpMep	Indicates the remote LSP defect type.
Remote LSP Disabled Duration (ms)	0 to 300000	Indicates the duration of the disable status of the LSP. Remote Disable Duration indicates the duration when the tunnel is unavailable.
Remote LSP Defect Location	Example: 192.168.11.1	Indicates the remote LSP defect location. Remote Defect Location identifies the location of the defect in the network by using the IP address.
SD Threshold (%)	0 to 100	When the packet loss rate of OAM packets on the link exceeds the set SD threshold, an SD alarm is reported. NOTE: The parameter cannot be set for the unidirectional tunnel in the ingress direction.
SF Threshold (%)	0 to 100	When the packet loss rate of OAM packets on the link exceeds the set SF threshold, an SF alarm is reported. SD threshold ≤ SF threshold NOTE: The parameter cannot be set for the unidirectional tunnel in the ingress direction.
Source Node	Example: 192.168.11.2	Indicates the source node of the tunnel.
Sink Node	Example: 192.168.11.3	Indicates the sink node of the tunnel.
LM Packet Mode	Standard Mode, Huawei Mode	Indicates the loss measurement packet mode for case-shaped transport equipment when the equipment interconnects with other types of equipment. Set LM Packet Mode to Huawei Mode when case-shaped transport equipment interconnects with subrack-shaped transport equipment. The loss measurement packet format of case-shaped transport equipment is different from that specified in protocols. Set LM Packet Mode to Standard Mode when case-shaped transport equipment interconnects with CX or other case-shaped transport equipment.