Avaya Configuring Traffic Filters and Protocol Prioritization Instrukcja Użytkownika Strona 37
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Using Protocol Prioritization Queues
308645-14.00 Rev 00
2-3
The Dequeuing Process
After queuing packets, the router empties the priority queues by sending the traffic
to the transmit queue using one of two dequeuing algorithms:
• Bandwidth Allocation Algorithm
• Strict Dequeuing Algorithm
By default, protocol prioritization uses the bandwidth allocation algorithm to send
traffic from the three priority queues to the transmit queue. You specify the active
dequeuing algorithm by setting the Prioritization Algorithm Type parameter, as
described in “Editing Protocol Prioritization Parameters
” on page 2-15.
Figure 2-1
illustrates the dequeuing process, with default configuration values.
Figure 2-1. Protocol Prioritization Dequeuing
Transmit
queue
Physical
interface
High
queue
Low
queue
Dequeuing algorithm
(Default algorithm = bandwidth allocation)
70% of bandwidth
20% of bandwidth
10% of bandwidth
(Default latency
= 250 ms)
Normal
queue
TF0001A
- Protocol Prioritization 1
- Trademarks 2
- Restricted Rights Legend 2
- Statement of Conditions 2
- Contents 5
- 308645-14.00 Rev 00 10
- Before You Begin 15
- Text Conventions 16
- Acronyms 17
- Hard-Copy Technical Manuals 20
- How to Get Help 20
- Chapter 1 21
- Using Traffic Filters 21
- Inbound Traffic Filters 22
- Outbound Traffic Filters 23
- Filtering Strategies 24
- Combine Filters 25
- Build a Firewall 25
- Traffic Filter Components 26
- Predefined Criteria 28
- User-Defined Criteria 30
- Using Filter Templates 33
- Chapter 2 35
- Priority Queuing 36
- The Dequeuing Process 37
- Tuning Concepts 45
- Queue Size Example 47
- Reconfiguring Queue Size 47
- Examples 48
- Chapter 3 51
- Ethernet Header 52
- IEEE 802.2 LLC Header 52
- header 53
- Transparent Bridge Actions 54
- Predefined SRB Criteria 55
- User-Defined SRB Criteria 56
- SRB Actions 56
- Predefined DECnet Criteria 57
- User-Defined DECnet Criteria 57
- DECnet Actions 57
- DLSw Criteria and Actions 58
- IP Criteria and Actions 59
- IP Actions 60
- IPX Criteria and Actions 61
- LLC2 Criteria and Actions 62
- OSI Criteria and Actions 63
- VINES Criteria and Actions 64
- XNS Criteria and Actions 65
- User-Defined XNS Criteria 66
- XNS Actions 66
- Chapter 4 67
- Selecting Predefined Criteria 68
- Traffic Filters 69
- Predefined IP Criteria 71
- Data Link Reference Points 73
- IP Reference Points 75
- Selecting Actions 76
- Prioritizing Actions 77
- Dial Service Actions 77
- Chapter 5 79
- Specifying MAC Address Ranges 80
- SRB Functional MAC Addresses 81
- Table 5-3. SAP Codes 82
- Table 5-4. Frame Relay NLPIDs 83
- Table 5-5. PPP Protocol IDs 83
- Table 5-7 84
- Chapter 6 89
- Chapter 7 109
- Creating a Template 112
- (continued) 113
- (continued) 115
- Customizing Templates 117
- Drop_Telnet_S42 121
- SRB_DSAP_hiQ 121
- Chapter 8 133
- Configuring IP Inbound 133
- Traffic Filters Using the BCC 133
- IP Traffic Filter Templates 134
- IP Inbound Traffic Filters 135
- Filter Precedence 136
- Filter Criteria and Actions 137
- <name> 139
- Caution: 140
- Templates 141
- Criteria 142
- Example - Source TCP Port 144
- Example - Source UDP Port 145
- <list_of_values> 147
- <ip_address> 149
- <ip_address> 149
- Specifying the Log Action 151
- Configuration Examples 152
- Appendix A 155
- Appendix B 163
- TCP and UDP ports: 164
- S41_accepted 165
- Length Range 168
- Configuring DLSw 171
- Services 171
- Implementation Notes 173
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