How does Port Advisor work?

Zyxel_Melen

Port Advisor monitor your switch and alert you with these anomalies:

PoE Detection

PoE Detection	Trigger Criteria
PoE Overload	When PD requests power exceeding the maximum power the switch is allowed to provide Example: Switch port 10 settings include PoE maximum power at 15 watts. IP Camera connects to port 10 requesting 19 watts.
PoE Short Circuit	When switch detects a short circuit from connected device
PoE Power Management	When total PDs requested power exceeds the switch’s power budget. Example: Switch power budget is 300 watts. 10 access points connected under switch requires total power requirement of 301 watts.

Storm Guard

Storm Guard	Trigger Criteria
Broadcast Storm	Occurs when broadcast packets received by a switchport exceeds the Broadcast Limit (pps) settings. Example: Switch port 10 settings include Broadcast Limit at 100 pps. Switch port 10 receives 101 broadcast traffic within 1 second.
Multicast Storm	Occurs when multicast packets received by a switchport exceeds the Multicast Limit (pps) settings. Example: Switch port 10 settings include Multicast Limit at 100 pps. Switch port 10 receives 101 multicast traffic within 1 second.

Bandwidth Pulse

Bandwidth Pulse	Trigger Criteria
RX Bandwidth Usage Exceeded	Occurs when switch receives traffic on port utilizing more than 85% of the port’s link speed Example: Port 10 establish link at 1Gbps. Traffic received on this port has peaked at 901Mbps.
TX Bandwidth Usage Exceeded	Occurs when switch transmit traffic on port utilizing more than 85% of the port’s link speed Example: Port 10 establish link at 1Gbps. Traffic transmitted on this port has peaked at 901Mbps.

Note: Bandwidth Utilization threshold can be manually set under Alert Settings page.

Loop & BPDU Guard

Loop & BPDU Watch	Trigger Criteria
Loop	Occurs when loopguard packets sent by this switch was received in another of this switch’s port. Example: Switch’s port 10 has loopguard enabled. Devices connected under switch port 10 forms a ring without the necessary network ring solutions.
BPDU	Occurs when switch receives a BPDU packet on a switch port with BPDU guard enabled. Example: Office switch’s port 10 has BPDU Guard enabled. Client connects his personal switch with STP enabled under the office switch’s Port 10.

Cable Health

Cable Health	Trigger Criteria
Poor Cable Quality	Hit counter increases when either conditions have been met: CRC Error Threshold Exceeded Rapid Link State Change with CRC Errors

Note: Switches that fails to deliver these information to NCC accurately will produce inaccurate Port Advisor results.