Configuring Layer 3 Connectivity Detection - 3Com 7757 Configuration Manual

Configuring Layer 3
Connectivity
Detection
Introduction to layer 3
connectivity detection
Layer 3 Connectivity
Detection Configuration
Task
Layer 3 Connectivity
Detection Configuration
Example
[SW7750] pause-protection enable slot 7
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.
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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.
Table 686 Configure Layer 3 connectivity detection
Operation
Enter system view
Enter Ethernet interface view
Enable Layer 3 connectivity
detection function
Display information about Layer 3
connectivity between the local
device and the remote device.
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.

Configuring Layer 3 Connectivity Detection

Command
system-view
interface interface-type
interface-number
uplink monitor ip ip-address Required
display uplink monitor
867
Description
-
-
Optional
You can execute the
display command in any
view.