Avaya BayRS Version 15.5.0.0 Uživatelský manuál stáhnout pdf (Strana 45)

Configuring Differentiated Services

314470-15.5 Rev 00 5-7

Once marked with a DSCP tag, router generated packets are mapped to DSQMS

queues based on the mapping scheme shown in Table 5-3

. As the table indicates,

critical and network control traffic is automatically directed to the two internal

queues that have strict priority scheduling.

You cannot change the mappings for the two internal queues. However, you can

override the default mappings of the user configurable queues. For information

about changing the mappings of the user configurable queues, see Configuring

Differentiated Services. DSQMS configuration is supported by the BCC only.

Note: The DSCP in the IP headers of Internet Protocol Security (IPsec)

packets remain the same as the DSCP of the original encapsulated IP packet.

Therefore, IPsec packets are queued based on the DSCP of the original packets

and are not subject to default queue mapping.

Note: The Timely category in Table 5-2 is redundant because all packets have

a default DSCP value of CS0. However, it is included in the table to indicate

which protocols will receive best effort treatment. Packets from all network

protocols that are not included in the first three traffic categories in the table

(Critical Control, Network Control, and Responsive) will be directed to the

best effort queue, which corresponds to the Standard service class.

Note: It is recommended that you use BayRS traffic filters on untrusted

ingress interfaces to limit the critical and network control traffic entering the

box. Doing so minimizes congestion in the high priority internal queues.

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Avaya BayRS Version 15.5.0.0 Uživatelský manuál Strana 45