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Assessment Title
Rule Text
The Customer Edge Router (CE-R) must expedite forwarding of VVoIP packets based on Differential Service Code Point (DSCP) packet marking.
Description
Discussion Text
The typical perimeter or premise router may not be capable of supporting the needs of VVoIP and UC when entering the DISN WAN. Modern routers are capable of dealing with service classes and expedited forwarding. This why the DISN IPVS PMO specifies the specific additional capabilities required of the perimeter or premise router to support the needs of the Assures Service network. The router designated by the DISN IPVS PMO needed to support the service is the CE-R. The CE-R provides the following functionality:
- Provides minimally four forwarding cues (eight preferred)
- Places traffic within expedited forwarding cues based on the DSCP markings carried by the traffic.
- Routes inbound AS-SIP-TLS packets and SRTP/SRTCP packets to the Session Border Controller (SBC).
- Routes SIP and SRTP traffic encapsulated on port 443 to the SBC.
- Routes all other inbound traffic to the data firewall.
- Provides all of the filtering required of a perimeter or premise router as required by the Router STIG.
Proper DSCP marking of VVoIP packets is required to provide appropriate QoS for Command and Control (C2) priority calls in support of Assured Service.
- Provides minimally four forwarding cues (eight preferred)
- Places traffic within expedited forwarding cues based on the DSCP markings carried by the traffic.
- Routes inbound AS-SIP-TLS packets and SRTP/SRTCP packets to the Session Border Controller (SBC).
- Routes SIP and SRTP traffic encapsulated on port 443 to the SBC.
- Routes all other inbound traffic to the data firewall.
- Provides all of the filtering required of a perimeter or premise router as required by the Router STIG.
Proper DSCP marking of VVoIP packets is required to provide appropriate QoS for Command and Control (C2) priority calls in support of Assured Service.
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