display healthcheck link

Function

The display healthcheck link command displays information about link health check.

Format

display healthcheck link num [ slot slot-id ]

display healthcheck link [ vpn-instance vpn-instance-name ] [ state { down | init | up } ] [ destination ip-address ] [ protocol { dns | http | icmp | radius | tcp | tcp-simple } ] [ slot slot-id ] [ verbose ]

Parameters

Parameter	Description	Value
slot-id	Specifies the slot ID.	-
vpn-instance-name	Specifies the name of a VPN instance.	-
down	Indicates that the health check status is Down.	-
init	Indicates that the health check status is Initialized.	-
up	Indicates that the health check status is Up.	-
ip-address	Specifies the destination IP address for health check.	It is in dotted decimal notation.
dns	Sends DNS probe packets.	-
http	Sends HTTP probe packets.	-
icmp	Sends ICMP probe packets.	-
radius	Sends RADIUS probe packets.	-
tcp	Sends TCP probe packets.	-
tcp-simple	Indicates that TCP packets are used to check network connectivity. A link is considered available upon the reply to the first detection packet by the destination device, not completion of the three-way handshake.	-
verbose	Displays details about health check.	-

Views

All views

Default Level

2: Configuration level

Usage Guidelines

None

Example

# Display information about link health check.

<sysname> display healthcheck link slot 11 verbose
--------------------------------------------------------------------------------
available_flag                          : 1                                     
ID                                      : 10                                    
AppID                                   : 2                                     
Vpn-instance                            : public                                
Protocol                                : tcp                                   
Destination Ip-address                  : 10.20.30.10                           
Destinaton port                         : 20010                                 
State                                   : down                                  
Tx-interval (default is 5)              : 5                                     
Times (default is 3)                    : 3                                     
RouteFlag                               : 2                                     
Source Ip-address                       : 2.2.2.2
NextHop Ip-address                      : 3.3.3.3                               
Out Interface                           : GE0/0/2                  
out if cmp flag                         : 1                                     
quality interval (default 20)           : 20
Input packet num                        : 21 
Output packet num                       : 21
ucReceiveCount                          : 0
failed packet num                       : 0
ucTxCounter num                         : 1
--------------------------------------------------------------------------------
quality loss cnt                        : 0
quality output cnt                      : 20
quality history index                   : 1
quality delay history array             : 0x4023a80
quality jitter history array            : 0x4023ae0
quality loss history array              : 0x4023b40

delay(ms)           jitter(ms)           loss(%)
7                   0                   0
7                   0                   0
6                   0                   0
6                   0                   0
5                   0                   0
5                   0                   0
5                   0                   0
4                   0                   0
4                   0                   0
4                   0                   0
--------------------------------------------------------------------------------

**Table 1** Description of the **display healthcheck link slot 11 verbose** command output
Item	Description
available_flag	Entry availability flag
ID	Internal ID of the entry
AppID	Health check ID of the module to which the entry belongs
Vpn-instance	VPN instance name
Protocol	Protocol type
Destination Ip-address	Destination IP address of health check
Destination port	Destination port number of health check
State	Current probe status up: The probe succeeds. Down: The probe fails. init: No probe is initiated.
Tx-interval	Probe interval
Times	Number of probe failures When the number of consecutive probe failures reaches a specific value, the system considers the link unavailable and changes the state of the link to Down.
RouteFlag	Route flag
Source Ip-address	Source IP address of probe packets
NextHop Ip-address	Next-hop IP address
Out Interface	Outbound interface
out if cmp flag	Outbound interface check flag
quality interval	Total number of probe times
Input packet num	Number of received response packets
Output packet num	Number of sent probe packets
ucReceiveCount	Number of times response packets are received
failed packet num	Number of failed probe packets
ucTxCounter num	Number of times probe packets are sent
quality loss cnt	Total number of packets discarded during quality detection
quality output cnt	Total number of packets sent during quality detection
quality history index	Quality detection index
quality delay history array	Memory address for recording historical delay records of quality detection
quality jitter history array	Memory address for recording historical jitter records of quality detection
quality loss history array	Memory address for recording historical packet loss records of quality detection
delay(ms)	Delay of the link monitored by the health check
jitter(ms)	Jitter of the link monitored by the health check
loss(%)	Packet loss rate of the link monitored by the health check