Chapter 2 Getting Started with the VG248
Configuring Network Settings
2-10
Cisco VG248 Analog Phone Gateway Software Configuration Guide
OL-1209-02
Enabling CDP
The VG248 can advertise itself to other network devices using Cisco Discovery
Protocol (CDP). Many network management applications require that CDP is
enabled.
To enable CDP, perform these steps:
Step 1 From the main menu, choose Configure.
Step 2 Choose Network interface.
Step 3 Choose CDP.
Step 4 Press Enter to toggle between enabled and disabled.
Setting DSCP Quality of Service Values
Differentiated Services Code Point (DSCP) is an IETF standard that uses 6 bits in the
IPv4 header's ToS (Type of Service) field to specify the class of service for each
packet. This enables you to apply differentiated grades of service to different packet
types.
You can modify the assigned DSCP Quality of Service (QoS) value for certain types
of traffic. This enables you to give priority to media traffic over control traffic.
To enable modify the DSCP QoS values, perform these steps:
Step 1 From the main menu, choose Configure.
Step 2 Choose Network interface.
Step 3 Choose Set DSCP QoS values.
Step 4 Choose one of the following options:
• Media traffic—RTP packets carrying voice, fax, and modem calls
• Control traffic—SCCP data packets carrying telephony control data
• All other traffic—such as FTP, HTTP, SNMP, and so on
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