Information Technology Reference
In-Depth Information
Ta b l e 1 4 -1 5
Cisco Service Class PHB Recommendations
Application Class
DSCP
PHB
Queuing and
Dropping
Applications
Network Control
CS6
BW queue
Network routing, EIGRP, OSPF, BGP,
HSRP, IKE
Te l e p h o n y
EF
PQ
IPT bearer traffic, VoIP, G.711, G.729
Broadcast Video
CS5
PQ (optional)
Cisco IP video surveillance
Multimedia Conferencing
AF4
BW queue +
DSCP WRED
H.323/V2 video conferencing; Cisco
Unified Personal Communicator
Real-Time Interactive
CS4
PQ (optional)
Video conferencing and interactive
gaming; TelePresence
Multimedia Streaming
AF3
BW queue +
DSCP WRED
Streaming video and audio on demand;
Cisco Digital Media System (VoD)
Call Signaling
CS3
BW queue
IPT signaling, H.323, SCCP, SIP
Low-Latency Transactional
data
AF2
BW queue +
DSCP WRED
Client/server, web-based ordering, We-
bex, MeetingPlace, ERP apps
Operations, Administra-
tion, Management (OAM)
CS2
BW queue
OAM&P, SNMP, S SH, s yslo g
High-Throughput Bulk
Data
AF1
BW queue +
DSCP WRED
Store-and-forward apps, email, FTP,
backup
Low-Priority Scavenger
Data
CS1
Minimum BW
queue
Flows with no bandwidth assurance,
Yo u Tu b e , B i t To r r e n t , X b o x
Standard Best Effort
CS0
Default queue
+ WRED
Default class
RFC 3435, Media Gateway Control Protocol (MGCP) Version 1.0
,www.ietf.org/rfc.
RFC 2705, Media Gateway Control Protocol (MGCP) Version 1.0
,www.ietf.org/rfc.
RFC 1890, RTP Profile for Audio and Video Conferences with Minimal Control,
.
RFC 1889, RTP: A Transport Protocol for Real-Time Applications,
www.ietf.org/rfc.
