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Table of Contents
Layer 2 Technologies
Ethernet Switching
Layer 2 WAN Protocols
IPv4
IPv4 Addressing
IPv4 Routing
IPv6
IPv6-101
IPv6 Routing
Interconnecting IPv6 and IPv4
MPLS
MPLS 101
MPLS L3 VPN
Multicast
Multicast 101
PIM 101
IGMP 101
Inter Domain Multicast
IPv6 Multicast
Multicast features on switches
Security
NAT 101
NAT for Overlapping Networks
ACLs 101
ACLs 102
Cisco IOS Firewall
Zone Based Firewall
AAA 101
Controlling CLI Access
Control Plane
Switch Security
IPSec VPN 101
DMVPN 101
Network Services
NTP 101
HTTP 101
File Transfer 101 – TFTP & FTP
WCCP 101
QoS
QoS 101
Classification and Marking
Congestion Management
Legacy Congestion Management
SPD – Selective Packet Discard
CBWFQ
IP RTP Priority
Congestion Avoidance – WRED
Policing and Shaping
Compression and LFI
Frame Relay QoS
RSVP 101
Switching QoS
Network Optimization
NetFlow 101 – TNF – Traditional NetFlow
NetFlow 102 – FNF – Flexible NetFlow
IP SLA 101
IP Accounting 101
Logging 101
SNMP and RMON 101
Cisco CLI Tips and Tricks
AutoInstall
Enhanced Object Tracking
Powered By GitBook
IP RTP Priority

IP RTP Reservation

IP RTP Reserve adds RTP traffic to the RSVP-reserved Queues of WFQ. These queues have a weight of 128, but RTP traffic will still have to compete with other RSVP flows for the bandwidth. Additionally, traffic that exceeds the configured RTP-BW will be treated as traffic with IP_Priority 0. To configure IP RTP Reserve, use:
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R(config-if)# ip rtp reserve UDP-START UDP-RANGE RTP-BW
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The IP RTP Priority feature was designed to provide strict priority queuing for voice traffic or any other delay sensitive traffic that uses RTP. This is better than the IP RTP reserve feature, where RPT traffic still had to compete with RSVP flows for bandwidth.
IP RPT Priority is compatible with WFQ and CBWFQ and it is used on an interface. You will have to configure the range of ports used by the RTP application that is given priority and how much bandwidth is allocated to it.
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R(config-if)# ip rtp priority UDP-START UDP-RANGE RTP-BW
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Effectively, RTP Priority will assign RTP traffic to a Priority Queue that is given strict priority before WFQ or CBWFQ. Only even ports are matched by this command, in contrast to RTP Reservation. This is because usually Voice traffic uses even ports, while voice signaling uses odd ports.
Traffic is rate limited to the RTP-BW, just like in RTP Reservation. RTP Priority will only need as a parameter the bandwidth of the RTP packets (compressed or not), without the L2 overhead.
The IP RTP Priority feature will take precedence over all other traffic, including the LLQ priority class.

IP RTP Priority for Frame Relay

You can configure IP RTP priority on frame-relay interfaces using a map-class. See Frame Relay QoS on details on how to configure and apply frame-relay map-classes. To enable IP RTP in a map-class, use:
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R(config-map-class)# frame-relay ip rtp priority UDP-START RANGE RTP-BW
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Frame Relay Traffic Shaping (FRTS) and Frame Relay Fragmentation (FRF.12) must be configured for FR ip rtp priority to work.
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Congestion Avoidance – WRED
Last modified 6mo ago
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IP RTP Reservation
IP RTP Priority for Frame Relay