Avaya Configuring Frame Relay Services Bedienungsanleitung Seite 97
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Customizing PVCs
308624-14.10 Rev 01
4-15
Controlling Congestion for PVCs
Congestion occurs when a node receives more frames than it can process, or sends
more frames than the transmission line can transport. You can enable congestion
control on your network. When you enable congestion control, the router receives
congestion notification messages from the PVC experiencing congestion, and
drops all outbound traffic destined for that PVC until it no longer receives
congestion notifications.
When you enable congestion control, you can set the length of time during which
the router counts congestion notifications. You can also set the maximum number
of congestion notifications that the router can receive during this time period. If
the router receives this number of congestion notifications within the time period
you specify, it stops transmitting data. The router resumes transmission when it
stops receiving congestion notifications.
If you use traffic shaping with congestion control, you also need to decide which
congestion control method the router should use. For more information about
traffic shaping, see “Using Traffic Shaping With PVCs” on page 4-21
.
If you enable congestion control, all PVCs on the interface use congestion control
and the values you specify for the congestion timer and congestion counter.
However, you can configure PVCs individually at the service level. In this case,
you can either disable congestion for an individual PVC, or select other
congestion control parameters for that PVC.
Configuring Congestion Control for an Interface
You can use either the BCC or Site Manager to control congestion for an interface.
Using the BCC
To configure congestion control for the interface you must first enable congestion
control. Then, you can optionally configure the congestion timer, congestion
counter, and congestion method.
- Configuring Frame Relay 1
- Services 1
- Trademarks 2
- Restricted Rights Legend 2
- Statement of Conditions 2
- Contents 5
- 308624-14.10 Rev 01 10
- Before You Begin 17
- Text Conventions 18
- Acronyms 19
- Hard-Copy Technical Manuals 21
- How to Get Help 22
- Chapter 1 23
- Frame Relay Overview 23
- Introduction to Frame Relay 24
- Permanent Virtual Circuits 25
- Switched Virtual Circuits 25
- PVC and SVC Comparison 26
- Frame Relay Packets 27
- . Note, however 28
- Management Protocols 29
- LAPF Operational States 31
- SVC Signaling 33
- Table 1-3. Network Timers 34
- Message Processing 35
- Frame Relay Service Records 36
- Frame Relay Access Modes 37
- Direct Access Mode 38
- Hybrid Access Mode 38
- Source Routing 40
- RFC 1490 40
- Address Resolution for PVCs 40
- Address Resolution for SVCs 41
- Traffic Control 41
- Data Compression 42
- Data Encryption 43
- Protocol Prioritization 43
- Congestion Control 44
- Traffic Shaping 45
- Quality of Service 47
- Traffic Shaping for SVCs 49
- Inactivity Timing for SVCs 55
- X.213 Priority for SVCs 55
- Multiline for PVCs 57
- PVC Pass-Through 59
- Frame Relay Dial Services 60
- Chapter 2 63
- Starting Frame Relay 63
- Configuring PVCs and SVCs 66
- To configure a PVC: 67
- Configuring an SVC 68
- Chapter 3 71
- Selecting a Management Type 72
- Setting XOFF Control 74
- Selecting a DLCI Address Type 75
- Monitoring the Connection 77
- Full Enquiry Interval 78
- Deleting Frame Relay 82
- Chapter 4 83
- Adding Service Records 85
- Deleting Service Records 86
- Enabling Multicast 92
- Configuring PVC Pass-Through 95
- Mapping Pass-Through PVCs 96
- Using Site Manager 100
- Using the BCC 100
- <integer> 101
- <value> 102
- Using Traffic Shaping 103
- Excess Burst 105
- Committed Burst 105
- CIR (Throughput) 106
- Customizing PVCs 109
- Removing Multiline Services 110
- Chapter 5 111
- Customizing SVCs 111
- Call Screening and Blocking 115
- SVC Screening 116
- SVC Screen Usage 116
- Disabling SVCs 119
- Disconnecting Active SVCs 120
- Station Type 122
- Initiation Mode 123
- Retransmission Timer 123
- Idle Timer 124
- Retransmission Limit 124
- Information Limit 124
- Window Size 125
- (continued) 126
- Maximum SVCs 128
- Setup Timer 128
- Disconnect Timer 129
- Release Timer 129
- Call Proceeding Timer 130
- Status Enquiry Timer 130
- Status Enquiry Retry 131
- <direction> 133
- Enabling Traffic Shaping 143
- Appendix A 155
- Site Manager Parameters 155
- Interface Parameters 156
- Figure A-2 157
- SVC LAPF Parameters 166
- SVC Signaling Parameters 171
- Service Name Parameter 176
- <line_number> 177
- <circuit_number> 177
- PVC Parameters 178
- PVC Service Record Parameters 180
- Multiline Algorithm Parameter 186
- C Service Record Parameters 189
- SVC Options Parameters 195
- Appendix B 211
- Table B-1. RIP Parameters 212
- Appendix C 219
- Monitoring Frame Relay Using 219
- Online Help for show Commands 220
- <dlci> 222
- <multiline_name> 222
- <name> 223
- (continued) 229
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