Loopback Detection Configuration - SignaMax 065-7434 Configuration Manual

Loopback
Configuration
This chapter describes how to configure the loopback detection on 065-
7434 Signamax 24-Port 10/100 L3 Switch.
The main content of this chapter:

Loopback detection configuration

Loopback
Configuration
The main contents of this section:
Overview
Basic commands of loopback detection
Application examples of loopback detection
Overview
Ethernet is a broadcast network. When the destination of the packet
cannot be identified, the switch broadcast it in one VLAN. When there is
loop in the network, the packet is forwarded repeatedly in the network.
At last, the network bandwidth is consumed up, which results in the
abnormal communication. When enabling loopback detection function on
the port, send Loopback packets regularly and check whether there is
loop in the network. When the port receives the loopback packets sent
from the local device, print the log information. If the interface index of
the loopback packet is the local port, that is, the packet is sent from the
local port, the port is blocked. And then continue to send loopback
detection packets to detect whether the loop is removed. If the loopback
is removed, unblock the port.
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Detection
Detection