7705 SAR Interfaces
264
Interface Configuration Guide
3HE 11011 AAAC TQZZA Edition: 01
• All IMA links in an IMA group must belong to the same T1/E1 Adapter card or
the same physical OC3 port.
• IMA bundles can only be aggregated on a single adapter card.
• On the 2-port OC3/STM1 Channelized Adapter card, the red differential delay is
configurable from 2 to 50 ms and is accurate within 1 ms. On the 16-port T1/E1
ASAP Adapter card and 32-port T1/E1 ASAP Adapter card, the red differential
delay is configurable from 2 to 75 ms and is accurate within 1 ms.
• If no member links are configured on an IMA group, the speed of an E1 channel
will be used to compute the maximum IMA group bandwidth that may be
allocated to shaped services.
• When adding member links to an IMA group, the clock-source of the E1 or DS1
link must be set to node-timed.
The following example illustrates creation of an IMA group with three group members
residing on a channelized 16-port T1/E1 ASAP Adapter card in slot 1/3/1:
ALU-A>config# port bundle-ima-1/3.1
ALU-A>config>port# multilink-bundle
ALU-A>config>port>ml-bundle# member 1/3/1.1
ALU-A>config>port>ml-bundle# member 1/3/2.1
ALU-A>config>port>ml-bundle# member 1/3/3.1
3.11.2.17.3 IMA Test Procedure
Use the following CLI syntax to perform an IMA test pattern procedure on a member
link of an IMA group.
CLI Syntax: configure# port bundle-ima-slot/port.bundle-num
multilink-bundle
ima
test-pattern-procedure
test-link port-id
test-pattern [pattern]
no shutdown
An operator can deploy IMA test procedures to verify operations of an IMA group and
its member links. The following is a list of key points about the test pattern procedure.
1. The test procedure is performed as defined by the IMA specification version 1.1.
That is, a test pattern is sent over the specified link and is expected to be looped
back over all the links in the group. ICP cells are used to perform the test.
2. The test procedure is not traffic-affecting; that is, data traffic will not be affected
by the ongoing test.
3. There can only be a single test executed per IMA group at any given time.
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