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CHAPTER 9: PORT MIRRORING AND SETUP PORT MIRRORING AND SETUP
MULTILINK ML1200 MANAGED FIELD SWITCH – INSTRUCTION MANUAL 9–9
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 ML1200 Managed Field Switch can
compensate for situations where only the switch receiver fiber cable is broken. Upon
detection of the broken receiver link, the ML1200 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
ML1200#
device
ML1200(device)##
show broadcast-protect
======================================================================
PORT | STATUS | THRESHOLD (frms/sec) | CURR RATE (frms/sec) | ACTIVE
======================================================================
1 Disabled 19531 0 NO
2 Disabled 19531 0 NO
3 Disabled 19531 0 NO
4 Disabled 19531 0 NO
5 Disabled 19531 0 NO
6 Disabled 19531 0 NO
ML1200(device)## broadcast-protect enable
Broadcast Storm Protection enabled
ML1200(device)## show broadcast-protect
======================================================================
PORT | STATUS | THRESHOLD (frms/sec) | CURR RATE (frms/sec) | ACTIVE
======================================================================
1 Enabled 19531 0 NO
2 Enabled 19531 0 NO
3 Enabled 19531 0 NO
4 Enabled 19531 0 NO
5 Enabled 19531 0 NO
6 Enabled 19531 0 NO
ML1200(device)## rate-threshold port=11 rate=3500
Broadcast Rate Threshold set
ML1200(device)## show broadcast-protect
======================================================================
PORT | STATUS | THRESHOLD (frms/sec) | CURR RATE (frms/sec) | ACTIVE
======================================================================
1 Enabled 19531 0 NO
2 Enabled 19531 0 NO
3 Enabled 3500 0 NO
4 Enabled 19531 0 NO
5 Enabled 19531 0 NO
6 Enabled 19531 0 NO