Show Commands
Page 508 7750 SR OS Interface Configuration Guide 
Sample Output
*A:ALU-211# show port 1/1/2
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Ethernet Interface
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Description        : 10/100 Ethernet TX
Link Up — A port that is physically present and has physical link 
present. 
Note that when Link Up appears at the lowest level of a SONET/SDH 
path or a TDM tributary, it means the physical connection is active but 
the port is waiting on some other state before data traffic can flow. It is 
a waiting state and indicates that data traffic will not flow until it tran-
sitions to the Up state.
Link Down — A port that is physically present but does not have a 
link.
Cfg MTU
The configured MTU.
Oper MTU
The negotiated size of the largest packet which can be sent  on the port  
SONET/SDH, channel, specified in octets. 
For channels that are used for transmitting network datagrams, this is 
the size of the largest network datagram that can be sent on the chan-
nel.
LAG ID
The LAG or multi-link trunk (MLT) that the port is assigned to. 
Port Mode
network — The port is configured for transport network use.
access — The port is configured for service access.
Port Encap
Null — Ingress frames will not use tags or labels to delineate a ser-
vice. 
dot1q — Ingress frames carry 802.1Q tags where each tag signifies 
a different service.
Port Type
The type of port or optics installed.
SFP/MDI MDX
GIGE — Indicates the GigE SFP type.
FASTE — Indicates the FastE SFP type.
GIGX — Indicates the GigX SFP type.
MDI — Indicates that the Ethernet interface is of type MDI (Media 
Dependent Interface).
MDX — Indicates that the Ethernet interface is of type MDX (Media 
Dependent Interface with crossovers).
Label Description  (Continued)