Service Manual

SFP+ 1 Connector = 0x23
……………………….
Dell#show interfaces tengigabitethernet 1/2 transceiver
SFP+ 1 Serial ID Base Fields
SFP+ 1 Id = 0x0d
SFP+ 1 Ext Id = 0x00
SFP+ 1 Connector = 0x23
……………………….
Dell#show interfaces tengigabitethernet 1/3 transceiver
SFP+ 1 Serial ID Base Fields
SFP+ 1 Id = 0x0d
SFP+ 1 Ext Id = 0x00
SFP+ 1 Connector = 0x23
……………………….
Dell#show interfaces tengigabitethernet 1/4 transceiver
SFP 1 Serial ID Base Fields
SFP 1 Id = 0x0d
SFP 1 Ext Id = 0x00
SFP 1 Connector = 0x23
SFP 1 Transceiver Code = 0x08 0x00 0x00 0x00 0x00 0x00 0x00 0x00
SFP 1 Encoding = 0x00
………………
………………
SFP 1 Diagnostic Information
===================================
SFP 1 Rx Power measurement type = OMA
===================================
SFP 1 Temp High Alarm threshold = 0.000C
SFP 1 Voltage High Alarm threshold = 0.000V
SFP 1 Bias High Alarm threshold = 0.000mA
Link Dampening
Interface state changes occur when interfaces are administratively brought up or down or if an interface
state changes.
Every time an interface changes a state or flaps, routing protocols are notified of the status of the routes
that are affected by the change in state. These protocols go through the momentous task of re-
converging. Flapping; therefore, puts the status of entire network at risk of transient loops and black
holes.
Link dampening minimizes the risk created by flapping by imposing a penalty for each interface flap and
decaying the penalty exponentially. After the penalty exceeds a certain threshold, the interface is put in an
Error-Disabled state and for all practical purposes of routing, the interface is deemed to be “down.” After
the interface becomes stable and the penalty decays below a certain threshold, the interface comes up
again and the routing protocols re-converge.
Link dampening:
• reduces processing on the CPUs by reducing excessive interface flapping.
• improves network stability by penalizing misbehaving interfaces and redirecting traffic.
• improves convergence times and stability throughout the network by isolating failures so that
disturbances are not propagated.
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Interfaces