Specifications

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Cisco MGX 8800/8900 Series Software Configuration Guide
Release 5.1, Part Number OL-6482-01, Rev. A0, January 25, 2005
Chapter 3 Provisioning PXM1E Communication Links
General PXM1E Configuration Procedures
Group Running Secs : 3999077
Alpha Val : 2
Beta Val : 2
Gamma Val : 1
Tx OAM Label : 1
Rx OAM Label : 1
Test Pattern Procedure Status : Disabled
Test Link : Unknown
Test Pattern : 255
Stuff Cell Indication (frames) : 1
Version Fallback Enabled : true
Auto-Restart Mode : disable
Rx IMA ID Expected : -1
Auto-Restart Sync State : disable
Step 4 To configure an IMA group, enter the cnfimagrp command, as shown in the following example:
M8830_CH.1.PXM.a > cnfimagrp <-grp <group> [-ver <version>] [-txm <minLinks>] [-txid
<txImaId>] [-txfl <txFrameLen>] [-dd <diffDelayMax>] [-uptim<groupUpTime>] [-dntim
<groupDownTime>] [-vfb <verFallback>] [-mode <autoRestart>] [-rxid <rxImaIdExpected>]
Table 3-5 describes the parameters for the cnfimagrp command.
Table 3-5 cnfimagrp Command Parameters
-grp <group> Enter the group number for the IMA group you are configuring. To display
the available IMA groups, enter the dspimagrps command.
-ver <version> The protocol version of the IMA group.
• IMA version 1.0 = 1
• IMA version 1.1 = 2
-txm <minLinks> The minimum number of links that will allow the IMA group to be
operational (Range: 1-16).
-txid <txImaId> The IMA ID number transmitted in the IMA ID field (Range: 0-255). The
transmit IMA ID should be different at each end of the IMA link. When the
transmit ID is different at each end, the switch accurately detects link
loopbacks. If the same transmit ID is configured at both ends of an IMA link,
the switch will incorrectly determine that the link is in loopback state.
Note This field cannot be changed while the IMA group is up.
txFrameLen The length of transmitted IMA frame in cells. This frame length is described
as M consecutive bytes for each Tx frame.
The txFrameLen value is configurable ONLY for IMA version 1.1. For IMA
version 1.0, the txImaFrameLength value is always 128. For IMA version
1.1, the txImaFrameLength value can be 32, 64, 128, or 256 bytes.
diffDelayMax The maximum differential delay in milliseconds. Enter a number in the range
for the appropriate link type:
• T1 range = 1 through 275 msec
• E1 range = 1 through 220 msec
Defaults: T1 = 275, E1 = 220
groupUpTime 0-400000 milliseconds
groupDownTime 0 and 100000 milliseconds