C
HAPTER
36
| Quality of Service Commands
– 842 –
violate-action
- Action to take when rate exceeds the PIR. (There
are not enough tokens in bucket BP to service the packet, the
packet is set red.)
drop
- Drops packet as required by exceed-action or violate-action.
transmit
- Transmits without taking any action.
new-dscp
- Differentiated Service Code Point (DSCP) value.
(Range: 0-63)
D
EFAULT
S
ETTING
None
C
OMMAND
M
ODE
Policy Map Class Configuration
C
OMMAND
U
SAGE
◆
You can configure up to 16 policers (i.e., class maps) for ingress ports.
◆
The
committed-rate
and
peak-rate
cannot exceed the configured
interface speed, and the
committed-burst
and
peak-burst
cannot
exceed 16 Mbytes.
◆
The trTCM as defined in RFC 2698 meters a traffic stream and
processes its packets based on two rates – Committed Information
Rate (CIR) and Peak Information Rate (PIR), and their associated burst
sizes - Committed Burst Size (BC) and Peak Burst Size (BP).
◆
The PHB label is composed of five bits, three bits for per-hop behavior,
and two bits for the color scheme used to control queue congestion. A
packet is marked red if it exceeds the PIR. Otherwise it is marked either
yellow or green depending on whether it exceeds or doesn't exceed the
CIR.
The trTCM is useful for ingress policing of a service, where a peak rate
needs to be enforced separately from a committed rate.
◆
The meter operates in one of two modes. In the color-blind mode, the
meter assumes that the packet stream is uncolored. In color-aware
mode the meter assumes that some preceding entity has pre-colored
the incoming packet stream so that each packet is either green, yellow,
or red. The marker (re)colors an IP packet according to the results of
the meter. The color is coded in the DS field [RFC 2474] of the packet.
◆
The behavior of the meter is specified in terms of its mode and two
token buckets, P and C, which are based on the rates PIR and CIR,
respectively. The maximum size of the token bucket P is BP and the
maximum size of the token bucket C is BC.
◆
The token buckets P and C are initially (at time 0) full, that is, the token
count Tp(0) = BP and the token count Tc(0) = BC. Thereafter, the token
count Tp is incremented by one PIR times per second up to BP and the
token count Tc is incremented by one CIR times per second up to BC.
Содержание ES3510MA
Страница 1: ...Management Guide www edge core com 8 Port Layer 2 Fast Ethernet Switch...
Страница 4: ...ABOUT THIS GUIDE 4...
Страница 30: ...CONTENTS 30...
Страница 40: ...FIGURES 40...
Страница 46: ...TABLES 46...
Страница 48: ...SECTION I Getting Started 48...
Страница 72: ...SECTION II Web Configuration 72...
Страница 88: ...CHAPTER 3 Using the Web Interface Navigating the Web Browser Interface 88...
Страница 115: ...CHAPTER 4 Basic Management Tasks Resetting the System 115 Figure 23 Restarting the Switch Regularly...
Страница 116: ...CHAPTER 4 Basic Management Tasks Resetting the System 116...
Страница 154: ...CHAPTER 5 Interface Configuration VLAN Trunking 154...
Страница 216: ...CHAPTER 8 Spanning Tree Algorithm Configuring Interface Settings for MSTP 216...
Страница 350: ...CHAPTER 14 Security Measures DHCP Snooping 350...
Страница 440: ...CHAPTER 17 IP Services Displaying the DNS Cache 440...
Страница 484: ...CHAPTER 19 Using the Command Line Interface CLI Command Groups 484...
Страница 554: ...CHAPTER 21 System Management Commands Switch Clustering 554...
Страница 574: ...CHAPTER 22 SNMP Commands 574...
Страница 582: ...CHAPTER 23 Remote Monitoring Commands 582...
Страница 636: ...CHAPTER 24 Authentication Commands Management IP Filter 636...
Страница 736: ...CHAPTER 29 Port Mirroring Commands RSPAN Mirroring Commands 736...
Страница 816: ...CHAPTER 34 VLAN Commands Configuring Voice VLANs 816...
Страница 830: ...CHAPTER 35 Class of Service Commands Priority Commands Layer 3 and 4 830...
Страница 848: ...CHAPTER 36 Quality of Service Commands 848...
Страница 900: ...CHAPTER 38 LLDP Commands 900...
Страница 910: ...CHAPTER 39 Domain Name Service Commands 910...
Страница 916: ...CHAPTER 40 DHCP Commands DHCP Client 916...
Страница 948: ...CHAPTER 41 IP Interface Commands IPv6 Interface 948...
Страница 950: ...SECTION IV Appendices 950...
Страница 982: ...INDEX 982...
Страница 983: ......
Страница 984: ...ES3510MA E032010 ST R01 149100000046A...