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9–10 MULTILINK ML2400 ETHERNET COMMUNICATIONS SWITCH – INSTRUCTION MANUAL
PORT MIRRORING AND SETUP CHAPTER 9: PORT MIRRORING AND SETUP
9.3.5 Link Loss Alert
The GE Multilin Universal Relay (UR) family and the F650 family of relays have redundant
Ethernet ports that allow for automatic switching to their secondary ports when they
detect the primary path is broken. The MultiLink switches can compensate for situations
where only the switch receiver fiber cable is broken. Upon detection of the broken receiver
link, the ML2400 will cease sending link pulses through the relay’s receive fiber cable,
thereby allowing the relay to switch to its secondary path.
Example 9-3: Preventing broadcast storms
ML2400#
device
ML2400(device)##
show broadcast-protect
======================================================================
PORT | STATUS | THRESHOLD (frms/sec) | CURR RATE (frms/sec) | ACTIVE
======================================================================
9 Disabled 19531 0 NO
10 Disabled 19531 0 NO
11 Disabled 19531 0 NO
12 Disabled 19531 0 NO
13 Disabled 19531 0 NO
14 Disabled 19531 0 NO
15 Disabled 19531 0 NO
16 Disabled 19531 0 NO
ML2400(device)## broadcast-protect enable
Broadcast Storm Protection enabled
ML2400(device)## show broadcast-protect
======================================================================
PORT | STATUS | THRESHOLD (frms/sec) | CURR RATE (frms/sec) | ACTIVE
======================================================================
9 Enabled 19531 0 NO
10 Enabled 19531 0 NO
11 Enabled 19531 0 NO
12 Enabled 19531 0 NO
13 Enabled 19531 0 NO
14 Enabled 19531 0 NO
15 Enabled 19531 0 NO
16 Enabled 19531 0 NO
ML2400(device)## rate-threshold port=11 rate=3500
Broadcast Rate Threshold set
ML2400(device)## show broadcast-protect
======================================================================
PORT | STATUS | THRESHOLD (frms/sec) | CURR RATE (frms/sec) | ACTIVE
======================================================================
9 Enabled 19531 0 NO
10 Enabled 19531 0 NO
11 Enabled 3500 0 NO
12 Enabled 19531 0 NO
13 Enabled 19531 0 NO
14 Enabled 19531 0 NO
15 Enabled 19531 0 NO
16 Enabled 19531 0 NO