3Com Switch 7750 Configuration Guide

Configuring Layer 3 Connectivity Detection 867
[SW7750] pause-protection enable slot 7
Configuring Layer 3
Connectivity
Detection
Introduction to layer 3
connectivity detection
The function that detects layer 3 connectivity is implemented as follows. Local
devices send ARP request packets continuously to the IP addresses of the devices
to be detected. Users can then locate, solve, and log link problems by monitoring
the peer devices through the received ARP response packets.
n
This function requires no Layer 3 device existing between the local peer and the
remote peer.
Layer 3 Connectivity
Detection Configuration
Task
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Before performing this configuration, make sure the physical link between the
local peer and the remote peer is correct, and the related VLAN interfaces are
assigned with correct IP addresses.
Layer 3 Connectivity
Detection Configuration
Example
Network requirements
■ The physical link between the local peer and the remote peer is correct. The
local peer port that is used to connect is Ethernet4/0/1.
■ The IP address of the lay 3 interface of the remote peer is 1.1.1.1.
Configuration procedure
# Enter system view.
<SW7750> system-view
[SW7750]
# Enter Ethernet interface view.
[SW7750] interface Ethernet 4/0/1
# Enable Layer 3 connectivity detection on Ethernet4/0/1 interface and specify the
IP address of the device (1.1.1.1) to be detected.
Table 686 Configure Layer 3 connectivity detection
Operation Command Description
Enter system view system-view -
Enter Ethernet interface view interface interface-type
interface-number
-
Enable Layer 3 connectivity
detection function
uplink monitor ip ip-address Required
Display information about Layer 3
connectivity between the local
device and the remote device.
display uplink monitor Optional
You can execute the
display command in any
view.