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Chapter 15: Quality of Service
264
Section II: Advanced Operations
matches the number being used by the traffic. However, no unused
tokens will accumulate in the bucket. If the traffic increases, the excess
traffic will be discarded since no tokens are available for handling the
increase.
If the traffic is below the maximum bandwidth, unused tokens will
accumulate in the bucket since the actual bandwidth falls below the
specified maximum. The unused tokens will be available for handling
excess traffic should the traffic exceed the maximum bandwidth.
Should an increase in traffic continue to the point where all the unused
tokens are used up, packets will be discarded.
Unused tokens accumulate in the bucket until the bucket reaches
maximum capacity, set by this parameter. When the maximum
capacity of the bucket is reached, no extra tokens are added. The
range is 4 to 512 Kbps.
Note
To use this parameter you must specify a maximum bandwidth
using item 6 - Max Bandwidth. Specifying a token bucket size
without also specifying a maximum bandwidth serves no function.
8 - Priority
Specifies the priority value in the IEEE 802.1p tag control field that
traffic belonging to this traffic class is assigned. Priority values range
from 0 to 7 with 0 being the lowest priority and 7 being the highest
priority. Incoming frames are mapped into one of eight Class of
Service (CoS) queues based on the priority value.
If you want the packets to retain the new value when they exit the
switch, change option 9, Remark Priority, to Yes.
If you specify a new user priority value here and in Flow Group, the
value in Flow Group overwrites the value here.
9 - Remark Priority
Replaces the user priority value in the packets with the new value
specified in option 4, Priority, if set to Yes. If set to No, which is the
default, the packets retain their preexisting priority level when they
leave the switch.
A - ToS
Specifies a replacement value to write into the Type of Service (ToS)
field of IPv4 packets. The range is 0 to 7.
If you specify a new ToS value here and in Flow Group, the value in
Flow Group overwrites the value here.
B - Move ToS to Priority
If set to yes, replaces the value in the 802.1p priority field with the
Summary of Contents for AT-9400
Page 16: ...Figures 16 ...
Page 18: ...Tables 18 ...
Page 28: ...Preface 28 ...
Page 30: ...30 Section I Basic Operations ...
Page 60: ...Chapter 1 Basic Switch Parameters 60 Section I Basic Operations ...
Page 64: ...Chapter 2 Port Parameters 64 Section I Basic Operations Port Type The port type ...
Page 84: ...Chapter 2 Port Parameters 84 Section I Basic Operations ...
Page 124: ...Chapter 6 Static Port Trunks 124 Section I Basic Operations ...
Page 144: ...144 Section II Advanced Operations ...
Page 196: ...Chapter 10 File Downloads and Uploads 196 Section II Advanced Operations ...
Page 218: ...Chapter 11 Event Logs and the Syslog Client 218 Section II Advanced Operations ...
Page 242: ...Chapter 13 Access Control Lists 242 Section II Advanced Operations ...
Page 294: ...294 Section III IGMP Snooping MLD Snooping and RRP Snooping ...
Page 314: ...Chapter 19 MLD Snooping 314 Section III IGMP Snooping MLD Snooping and RRP Snooping ...
Page 318: ...318 Section IV SNMPv3 ...
Page 416: ...Chapter 21 SNMPv3 416 Section IV SNMPv3 ...
Page 418: ...418 Section V Spanning Tree Protocols ...
Page 470: ...470 Section VI Virtual LANs ...
Page 520: ...Chapter 26 Multiple VLAN Modes 520 Section VI Virtual LANs ...
Page 532: ...Chapter 27 Protected Ports VLANs 532 Section VI Virtual LANs ...
Page 546: ...546 Section VII Internet Protocol Routing ...
Page 560: ...560 Section VIII Port Security ...
Page 568: ...Chapter 30 MAC Address based Port Security 568 Section VIII Port Security ...
Page 586: ...Chapter 31 802 1x Port based Network Access Control 586 Section VIII Port Security ...
Page 588: ...588 Section IX Management Security ...
Page 610: ...Chapter 33 Encryption Keys 610 Section IX Management Security ...
Page 650: ...Chapter 36 TACACS and RADIUS Protocols 650 Section IX Management Security ...
Page 660: ...Chapter 37 Management Access Control List 660 Section IX Management Security ...
Page 668: ...Index 668 ...