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278 CHAPTER 17: NETWORK PROTOCOL OPERATION
You can use the following command to configure through which VLAN interface the
resilient ARP packet is sent. The system provides a default VLAN interface to send
resilient ARP packets.
Perform the following configuration in System View.
By default, the system sends resilient ARP packets through VLAN interface 1.
Note that you only specify resilient ARP packet-sending VLAN interfaces, and any
VLAN interface can receive resilient ARP packets.
Displaying and
Debugging Resilient ARP
Configuration
After the above configurations are completed, you can enter the
display command
in any view to view the running of resilient ARP function and to further check
configuration results.
You can also enter the
debugging command in User View to debug the resilient ARP
function.
Resilient ARP
Configuration Example
Networking Requirement
There are four units, numbered respectively Unit 1 through Unit 4, in the XRN
network. Unit 1 and Unit 3 are connected to the Switch in link aggregation mode.
Resilient ARP runs on the XRN fabric to avoid packet forwarding problems between
the Switch and fabric when the network has two Layer 3 units, if the links between
unit 1 and unit 3, between unit 2 and unit 4 are disconnected. MD5 authentication is
enabled for the sake of security. The ports of Unit 1 and Unit 3, connecting the
Switch, belong to VLAN 2.
Table 275 Configuring/Deleting Resilient ARP Packet-sending VLAN Interface
Operation Command
Configure resilient ARP
packet-sending VLAN interface
resilient-arp interface vlan-interface
vlan_id
Delete resilient ARP
packet-sending VLAN interface
undo resilient-arp interface vlan-interface
vlan_id
Table 276 Displaying and Debugging Resilient ARP Configuration
Operation Command
Display resilient ARP state
information
display resilient-arp [ unit unit_id ]
Enable resilient ARP
debugging
debugging resilient-arp { packet | state | error | all }
Disable resilient ARP
debugging
undo debugging resilient-arp { packet | state | error |
all }