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| Title | Size | Download |
|---|---|---|
| 05-Layer 3 connection keepalive commands | 48.11 KB |
Layer 3 connection keepalive commands
display l3-keepalive
Use display l3-keepalive to display Layer 3 connection keepalive information.
Syntax
display l3-keepalive
Views
Any view
Predefined user roles
network-admin
network-operator
Examples
# Display Layer 3 connection keepalive information.
<Sysname> display l3-keepalive
Interface Track ID State
GE1/0/1 1 NotReady
GE1/0/2 2 Positive
Table 1 Command output
|
Field |
Description |
|
Track ID |
Track entry associated with the Layer 3 connection keepalive feature. |
|
State |
State of the track entry: · Positive—The tracked object operates correctly (the peer is reachable). · Negative—The tracked object is abnormal (the peer is unreachable). · NotReady—The detection result is invalid. |
Related commands
l3-keepalive
l3-keepalive
Use l3-keepalive to enable the Layer 3 connection keepalive feature and associate a track entry with the feature.
Use undo l3-keepalive to disable the Layer 3 connection keepalive feature.
Syntax
l3-keepalive track track-entry-number
undo l3-keepalive
Default
The Layer 3 connection keepalive feature is disabled.
Views
Layer 3 Ethernet interface view
Layer 3 aggregate interface view
VLAN interface view
Predefined user roles
network-admin
Parameters
track track-entry-number: Specifies the track entry by its ID in the range of 1 to 1024. For more information about Track, see High Availability Configuration Guide.
Usage guidelines
If a device becomes faulty but its interfaces are functional, the device can receive IP packets from other devices but is unable to process them. The Layer 3 connection keepalive feature can address this issue by detecting peer device faults. With this feature enabled, an interface stops sending Layer 3 packets to a peer device when it detects that the peer device is faulty. Upon discovering this Layer 3 connection failure, the administrator can troubleshoot the faulty device immediately in order to resume Layer 3 communication between devices.
Only one track entry can be associated with the Layer 3 connection keepalive feature on an interface. If you execute this command multiple times, the most recent configuration takes effect.
This feature can work with only ARP NQA operations.
Examples
# Enable the Layer 3 connection keepalive feature and associate track entry 2 with the feature on GigabitEthernet 1/0/1.
<Sysname> system-view
[Sysname] interface gigabitethernet 1/0/1
[Sysname-GigabitEthernet1/0/1] l3-keepalive track 2
# Enable the Layer 3 connection keepalive feature and associate track entry 2 with the feature on VLAN-interface 10.
<Sysname> system-view
[Sysname] interface vlan-interface 10
[Sysname-Vlan-interface10] l3-keepalive track 2
Related commands
display l3-keepalive
nqa entry (Network Management and Monitoring Command Reference)
