Configuring RLMI
Configuration Overview
ATM Services Configuration Guide for CBX 3500, CBX 500, GX 550, and B-STDX 9000 1/19/0515-3
Beta Draft Confidential
RLMI Terms
Table 15-1 lists the RLMI terms used in this chapter.
Table 15-1. RLMI Terms
Term Definition
Full Status Enquiry Status Enquiry Message with Report Type of Full Status.
Full Status Response Status Message with Report Type of Full Status.
Preferred Link The link configured by the RLMI to activate as the working link.
Backup Link The link selected by the RLMI to activate as the working link (in
case the preferred link is not up or goes down while in an active
phase).
Working Link The active link, which is used for data transfer, LMI polling, and
SVC signaling. A working link is either a preferred link or backup
link.
Protection Link The link selected by the RLMI to activate in case the working link
goes down. A protection link is either a preferred link or backup
link.
Full Revertive If the Master RLMI switch’s RLMI mode is configured as Full
Revertive, the following occurs:
• When the preferred link goes down, the backup link becomes
the working link.
• If or when the preferred link comes back up, the working link
automatically switches back to the preferred link.
Semi Revertive If the Master RLMI switch’s RLMI mode is configured as Semi
Revertive, the following occurs:
• When the preferred link goes down, the backup link becomes
the working link.
• If or when the preferred link comes back up, the working link
remains as the backup link (unless the backup link is down as
well, then the preferred link becomes the working link again).
Manual Switchover
Only
If the Master RLMI switch’s RLMI mode is configured as Manual
Switchover Only, the following occurs:
• When the preferred link goes down, the backup link does not
automatically become the working link. You must manually
apply the switchover through the NMS, at which point the
backup link becomes the working link.
• When the backup link is down and the preferred link comes
back up, the preferred link does not automatically become the
working link unless you manually switch over again.
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