Configuring DSCP Options Overview

The administrator can configure the DiffServ code point (DSCP) value for traffic initiated by a security device. Altogether, the DSCP value can be configured for 12 services, including BGP, OSPF, RIP, RIPng, Telnet, SSH, Web, TFTP, SNMP, syslog, Webtrends, and IKE. The Web service contains the HTTP and HTTPS services.

The DSCP marking for self-initiated traffic is required. These self-initiated packets might be dropped by an intermediate device because of lower priority.

The DSCP value of the BGP and the OSPF packet is set to 48, and for all other services the default value is 0. The value must be in the range of 0 to 63. The priority is lowest when the DSCP value is set to 0.

When the administrator sets the DSCP value for a specific service, the DSCP field of all the self-initiated packets that belong to that service are set to the specified value.

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