ZyXEL Communications MSC1000G Series, User Manual

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Chapter 24 ima Commands
Management Switch Card User’s Guide
712
group clk set < slot-gid > [ctc
local]|[ctc loop]|[itc]
Select the source of the clock which the IMA
should use for the E1 port(s) in the selected
IMA group. 8
enable < slot-gid >
Enables the specified IMA group. 8
disable < slot-gid >
Disables the specified IMA group. 8
frame < slot-gid > <32|64|128|256>
Sets the number of ATM cells that can be
accepted in an IMA frame for the specified IMA
group. An IMA frame contains one ICP cell and
the number of ATM cells you specify here. 8
framesync < slot-gid > < alpha > < beta >
< gamma >
Sets the parameters the IMA line card uses to
control the frame synchronization mechanism
in the specified IMA group. 8
link < slot-gid > < linklist >
Sets link members for the specified IMA group. 8
show < slot-gid >
Displays information about the specified IMA
group. 1
sym < slot-gid >
symop|asymo|asymcfg
Sets:
• Symmetrical Configuration: Each E1
physical line has an upstream and a
downstream IMA links. Select this to have
an IMA link in this group be allowed to
transmit and receive data only when both
the downstream and upstream links are
active and connected between the IMA
devices.
• Symmetrical Operation: Both this IMA line
and the remote ADM device should wait for
the other end’s “active confirmation” before
transmitting or receiving data.
• Asymmetrical Operation: Both this IMA line
and the remote ADM device do NOT need
to wait for the other end’s “active
confirmation” before transmitting or
receiving data.
symop
= Symmetrical Configu
Symmetrical Operation
asymop
= Symmetrical Configu
Asymmetrical Operation
8
maxdifdelay < slot-gid > < maxdifdelay >
Enter the maximum number of milliseconds
the IMA group can wait to receive delayed
data. If a delay exceeds this setting, the IMA
triggers a Loss of Delay Synchronization alarm
and changes the state of the link to indicate a
line defect.
maxdifdelay
: 25~300 ms
8
minlink < slot-gid > < minlink >
Enter the minimum number of E1 lines (1~8)
the specified IMA group should support. Once
all of these E1 lines link up, the IMA group
automatically activates. Disconnecting one of
these E1 lines deactivates this IMA group. The
fewer E1 lines you configure here the less
bandwidth the IMA group can guarantee. 8
version < gid > <1.0|1.1>
Select the version of IMA protocol this IMA line
card uses to communicate with the peer IMA
devices. Both peers must use the same IMA
protocol version. 8
Table 356
ima Commands (continued)
COMMAND DESCRIPTION P