Users Guide

SFP+ 2/1 Serial ID Base Fields
SFP+ 2/1 Id = 0x0d
SFP+ 2/1 Ext Id = 0x00
SFP+ 2/1 Connector = 0x23
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Dell#show interfaces tengigabitethernet 1/3/1 transceiver
SFP+ 3/1 Serial ID Base Fields
SFP+ 3/1 Id = 0x0d
SFP+ 3/1 Ext Id = 0x00
SFP+ 3/1 Connector = 0x23
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Dell#show interfaces tengigabitethernet 1/4/1 transceiver
SFP 4/1 Serial ID Base Fields
SFP 4/1 Id = 0x0d
SFP 4/1 Ext Id = 0x00
SFP 4/1 Connector = 0x23
SFP 4/1 Transceiver Code = 0x08 0x00 0x00 0x00 0x00 0x00 0x00 0x00
SFP 4/1 Encoding = 0x00
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SFP 4/1 Diagnostic Information
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SFP 4/1 Rx Power measurement type = OMA
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SFP 4/1 Temp High Alarm threshold = 0.000C
SFP 4/1 Voltage High Alarm threshold = 0.000V
SFP 4/1 Bias High Alarm threshold = 0.000mA
Configuring wavelength for 10–Gigabit SFP+
optics
You can set the wavelength for tunable 10–Gigabit SFP+ optics using the wavelength command. To set the wavelength,
follow these steps:
• Enter the interface mode and set the wavelength.
INTERFACE mode
wavelength 1529.0
The wavelength range is from 1528.3 nm to 1568.77nm.
• Verify configuration changes.
INTERFACE mode
show config
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.
Interfaces 371