3Com S7906E - Switch, Configuration Manual

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To do… Use the command… Remarks
Enable expansion memory
data recovery function on a
card (distributed device)
mmu-monitor enable slot
slot-number
Optional
Enabled by default.
Enable expansion memory
data recovery function on a
card (distributed IRF device) mmu-monitor enable chassis
chassis-number slot
slot-number
Optional
Enabled by default.
This function is only available to EA LPUs and LSQ1SRP1CB SRPUs.
Identifying and Diagnosing Pluggable Transceivers
Introduction to pluggable transceivers
At present, four types of pluggable transceivers are commonly used, as shown in Table 1-3 . They can
be further divided into optical transceivers and electrical transceivers based on transmission medium.
Table 1-3 Commonly used pluggable transceivers
Transceiver type
Application
environment
Whether can be an
optical transceiver
Whether can be an
electrical transceiver
SFP (Small
Form-factor
Pluggable)
Generally used for
100M/1000M Ethernet
interfaces or POS
155M/622M/2.5G
interfaces
Yes Yes
GBIC (Gigabit
Interface Converter)
Generally used for
1000M Ethernet
interfaces
Yes Yes
XFP (10-Gigabit small
Form-factor
Pluggable)
Generally used for
10G Ethernet
interfaces
Yes No
XENPAK (10-Gigabit
Ethernet Transceiver
Package) Generally used for
10G Ethernet
interfaces
Yes Yes
Identifying pluggable transceivers
As pluggable transceivers are of various types and from different vendors, you can use the following
commands to view the key parameters of the pluggable transceivers, including transceiver type,
connector type, central wavelength of the laser sent, transfer distance and vendor name or name of the
vendor who customizes the transceivers to identify the pluggable transceivers.
Follow these steps to identify pluggable transceivers: