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20-14
Cisco Prime Network 4.0 User Guide
OL-29343-01
Chapter 20 Monitoring MToP Services
Viewing IMA Group Properties
Description IMA group interface name.
Frame Length Length of the IMA group transmit frames, in the number of cells:
32, 64, 128, or 256.
A small frame length causes more overhead but loses less data if a
problem occurs. We recommend a frame length of 128 cells.
Group Number IMA group number.
Group State IMA group status, in the order of usual appearance:
• Startup—The near end is waiting to receive indication that the
far end is in Startup. The IMA group moves to the Startup-Ack
state when it can communicate with the far end and has
recorded IMA identifier, group symmetry, and other IMA group
parameters.
• Startup ACK—Both sides of the link are enabled.
• Config Aborted—The far end has unacceptable configuration
parameters, such as an unsupported IMA frame size, an
incompatible group symmetry, or an unsupported IMA version.
• Insufficient Links—The near end has accepted the far end
group parameters, but the far end does not have sufficient links
to move into the Operational state.
• Operational—The group is not inhibited and has sufficient links
in both directions. The IMA interface can receive ATM layer
cells and pass them from the IMA sublayer to the ATM layer.
• Blocked—The group is blocked, even though sufficient links
are active in both directions.
IMA Version IMA version configured, either 1.0 or 1.1.
Minimum Number of Rx Links Minimum number of Rx links needed for the IMA group to be
operational.
Minimum Number of Tx Links Minimum number of Tx links needed for the IMA group to be
operational.
Number of Active Links Number of DS1 (E1 or T1) links that are active in the group.
Number of Configured Links Number of DS1 (E1 or T1) links that are configured in the IMA
group.
Oper Status Operational state of the IMA group interface:
• Dormant—The interface is dormant.
• Down—The interface is down.
• Not Present—An interface component is missing.
• Testing—The interface is in test mode.
• Unknown—The interface has an unknown operational status.
• Up—The interface is up.
Port Type Type of port, such as ATM IMA.
Table 20-7 IMA Group Properties (continued)
Field Description