QoS
Quality of Service (QoS) refers to mechanisms that are used to change how a network device deals with different packets and frames. QoS can be applied at Layer 2 or Layer 3.
QoS is especially useful for prioritizing different types of network traffic. For example, we can configure a router so that voice traffic it routes is prioritized and served first, before data traffic.
QoS is useful for services such as voice and video as well as other services.
Some common QoS features and mechanism include:
QoS components
QoS concepts
- QoS - Assured Forwarding PHB values
- QoS CoS vs DSCP
- QoS Resource Reservation Protocol (RSVP)
- QoS Modular QoS CLI (MQC)
- QOS - Multilayer Switch QoS (MLS)
Traffic shaping and policing
Layer 2 QoS
- QoS - WRED traffic profile thresholds
- QoS CBWFQ traffic allocation when there are empty queues
- QoS hardware queues scheduling
Links:
https://networklessons.com/quality-of-service
https://networklessons.com/quality-of-service/introduction-qos-quality-service
Links to this page:
- home
- Cisco IOS Order of Operation
- Cisco QoS HCF shaper and bandwidth inheritance
- Cisco Quantum Flow Processor
- Hardware - Application Specific Integrated Circuit (ASIC)
- IPv4 - ToS Byte definition
- Interface - show interfaces counters explained
- MPLS - Layer 2 VPNs
- MPLS - Transport Profile
- MPLS TE - TE Tunnels
- MPLS traffic engineering
- MetroEthernet - VLAN design considerations
- Network Design - Switch oversubscription ratios
- Network Design - Traffic Engineering
- Ping - Specify ToS
- QOS - Multilayer Switch QoS (MLS)
- QoS - Assured Forwarding PHB values
- QoS - Bc and Be bucket sizes
- QoS - CBWFQ
- QoS - Classification by IP
- QoS - CoS to DSCP and DSCP to CoS mapping
- QoS - Hierarchical QoS
- QoS - LLQ applied only outbound
- QoS - LLQ bandwidth configuration
- QoS - LLQ priority commands
- QoS - Nested policy maps
- QoS - Policing command syntax
- QoS - QoS Groups
- QoS - RSVP bandwidth and flow reservations
- QoS - Tail Drop
- QoS - Using CBWFQ with traffic shaping
- QoS - WRED traffic profile thresholds
- QoS - applying policies
- QoS - auto qos trust
- QoS - classification
- QoS - effects of bandwidth interface command
- QoS - is WRED really a congestion avoidance mechanism
- QoS - key and nonkey fields
- QoS - marking
- QoS CBWFQ traffic allocation when there are empty queues
- QoS CoS vs DSCP
- QoS Hierarchical Queuing Framework (HQF)
- QoS Network Based Application Recognition (NBAR)
- QoS RSVP Path message
- QoS RSVP Resv message
- QoS Resource Reservation Protocol (RSVP)
- QoS hardware queues scheduling
- QoS how traffic shaping is achieved
- QoS max-reserved-bandwidth
- QoS mechanisms kick in only when there is congestion
- QoS specifying reserved bandwidth for a class belonging to a policy-map
- QoS tokens in shaping and policing
- QoS traffic policing
- QoS traffic shaping
- QoS using a shared policer on Nexus devices connected with vPC
- SD-WAN set TLOC color
- Troubleshooting a slow network
- VLAN - VLAN IDs 0 and 4095
- VLAN Tag
- VoIP - Configuring a switch port for use with an IP phone
- Wireless - Real-time and management functions
- Wireless - Wireless LAN Controller
- traffic generator options