3Com SuperStack 4 Configuration Manual page 80

92 C 5: N
HAPTER ETWORK
Resilient ARP
Configuration Example
P O
ROTOCOL PERATION
You can also enter the
ARP function.
Table 86 Displaying and Debugging Resilient ARP Configuration
Operation
Display resilient ARP state
information
Enable resilient ARP
debugging
Disable resilient ARP
debugging
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.
Networking Diagram
Figure 21 Networking for Resilient ARP Configuration
Unit 1 Unit 1
XRN XRN
Unit 2 Unit 2
Configuration Procedure
1 Enable resilient ARP function.
[SW5500]resilient-arp enable
2 Set VLAN interface 2 to send resilient ARP packets.
[SW5500]resilient-arp interface vlan-interface 2
command in User View to debug the resilient
debugging
Command
display resilient-arp [ unit
debugging resilient-arp { packet | state | error | all
}
undo debugging resilient-arp { packet | state |
error | all }
Switch Switch
Unit3 Unit3
Unit 4 Unit 4
]
unit_id