3com MSR 20-20 참조 매뉴얼

C

HAPTER

 17: F

UNDAMENTAL

 CT3 I

NTERFACE

 C

ONFIGURATION

 C

OMMANDS

# Configure T3 2/0 interface to operate in the FT3 mode, setting the DSU mode to 
1 and the subrate to 3000 kbps.

<Sysname> system-view

[Sysname] controller t3 2/0

[Sysname-T3 2/0] using t3

[Sysname-T3 2/0] ft3 dsu-mode 1

[Sysname-T3 2/0] ft3 subrate 3000 

loopback { local | payload | remote }

CT3 interface view

local: Enables internal loopback on the CT3 interface.

payload: Enables external payload loopback on the CT3 interface.

remote: Enables external loopback on the CT3 interface.

Use the loopback command to configure the loopback mode for a CT3 interface.

Use the undo loopback command to disable loopback.

By default, loopback is disabled on CT3 interfaces.

Loopback is intended for test use. Disable it otherwise.

If a CT3 interface encapsulated with PPP is placed in a loopback, it is normal that 
the state of the link layer protocol is reported down.

# Enable internal loopback on interface T3 2/0.

<Sysname> system-view

[Sysname] interface t3 2/0

[Sysname-T3 2/0] loopback local 

mdl { detect | data { eic string | fic string | | gen-no string | lic string | pfi string | 
port-no string | unit string } | generate { idle-signal | path | test-signal } }

undo mdl [detect | data [ eic | fic | gen-no | lic | pfi | port-no | unit ] | generate 
[idle-signal | path | test-signal ] ]

CT3 interface view

detect: Enables periodical maintenance data link (MDL) message detection.