
Configuring Differentiated Services
314470-15.5 Rev 00 5-11
• When both Protocol Prioritization and DSQMS are configured, at the driver
level DSQMS always takes precedence. This means that such a configuration
is inconsequential as far as Protocol Prioritization is concerned because at the
driver level, DSQMS will be running.
• When both Protocol Prioritization and DSQMS are configured, at the FR level
only Protocol Prioritization operates (because DSQMS operates only at the
driver level). BayRS code (even before DSCP Tagging feature) tags FR LMI
as interrupt traffic only if Protocol Prioritization is configured. So, the purpose
of Protocol Prioritization configuration for LMI is only to tag packets (in the
FR code) so they can be identified later (in the driver code). When a tagged
LMI packet comes to the driver, the following occurs:
• When DSQMS is not configured, Protocol Prioritization operates at the
driver level. In this case, Protocol Prioritization identifies the tag and puts
the LMI traffic into the Interrupt Queue.
• When DSQMS is configured, it takes precedence over Protocol
Prioritization. In this case, DSQMS identifies the tag and puts the LMI
traffic into Internal Queue 1 (IntQ1).
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