User's Manual

Table Of Contents
Configuration Guide of XGS-5240-Series
62-8
Switch(config-If-Ethernet1/0/1)#mrpp ring 4000 primary-port
Switch(config-If-Ethernet1/0/1)#interface ethernet 1/0/2
Switch(config-If-Ethernet1/0/2)#mrpp ring 4000 secondary-port
Switch(config-If-Ethernet1/0/2)#exit
Switch(Config)#
62.4 MRPP Troubleshooting
The normal operation of MRPP protocol depends on normal configuration of each s
witch on MRPP ring, otherwise it is very possible to form ring and broadcast storm:
Configuring MRPP ring, you’d better disconnected the ring, and wait for each switc
h configuration, then open the ring.
When the MRPP ring of enabled switch is disabled on MRPP ring, it ensures the r
ing of the MRPP ring has been disconnected.
When there is broadcast storm on MRPP ring, it disconnects the ring firstly, and e
nsures if each switch MRPP ring configuration on the ring is correct or not; if corr
ect, restores the ring, and then observes the ring is normal or not.
The convergence time of MRPP ring net is relative to the response mode of up/do
wn. If use poll mode, the convergence time as hundreds of milliseconds in simple
ring net, if use interrupt mode, the convergence time within 50 milliseconds.
Generally, the port is configured as poll mode, interrupt mode is only applied to be
tter performance environment, but the security of poll mode is better than interrupt
mode, port-scan-mode {interrupt | poll} command can be consulted.
In normal configuration, it still forms ring broadcast storm or ring block, please ope
n debug function of primary node MRPP, and used show MRPP statistics comman
d to observe states of primary node and transfer node and statistics information is
normal or not, and then sends results to our Technology Service Center.