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Packet Over SONET Module Installation and User Guide 3-83
Configuring and Monitoring APS Functions
Figure 3-17: Redundant switch configuration with APS
While these two configurations appear similar, the significant difference between them
is that the BlackDiamond switches in Figure 3-17 appear to the rest of the network as
two PoS interfaces (IP addresses 192.168.10.1 and 192.168.20.1), as opposed to the four
PoS interfaces shown in Figure 3-16 (IP addresses 192.168.10.1, 192.168.20.1, 192.168.10.3,
and 192.168.20.3). The configuration in Figure 3-17 enables customers to purchase half
the SONET bandwidth without sacrificing resiliency. In fact, the APS configuration
offers increased resiliency by virtue of not reducing maximum throughput as a result of
a single line or switch failure. Furthermore, if the extra bandwidth is needed, two larger
bandwidth interfaces are more efficient than four smaller bandwidth interfaces, due to
suboptimal load-balancing.
PoS_016
BlackDiamond 1
Virtual APS router
1234AB5678
Working line
Group 1
Protection line
Group 1
Working line
Group 2
Protection line
Group 2
1234AB5678
BlackDiamond 2
Ethernet
ADM
2
ADM
1
192.168.10.1
192.168.20.1
192.168.10.1
192.168.20.1
- Packet Over SONET 1
- Module Installation and 1
- User Guide 1
- Contents 3
- 3 Configuring the PoS Module 4
- Contents v 5
- Related to the PoS Module 6
- Figures ix 9
- Ta bl es xi 11
- Introduction 13
- Conventions 14
- Related Publications 15
- Overview 17
- BlackDiamond I/O Modules 18
- About the PoS Modules 19
- Physical Description 20
- PoS Module LED Indicators 21
- Service Ports 21
- Feature Summary 23
- Function Summary 25
- Jumbo Frames 26
- Service Provider Features 27
- NetFlow Statistics 28
- Installing or Replacing a 31
- PoS Module 31
- Cables and Connectors 33
- Safety Information 34
- I/O Module Slot Locations 35
- 1234AB5678 36
- LED Indicators 40
- Troubleshooting 41
- Fixing Configuration Errors 43
- Fixing Power-Related Problems 45
- Fixing Link Down Problems 45
- Tools and Equipment 46
- Removing an I/O Module 47
- BlackDiamond 1 52
- BlackDiamond 2 52
- Routing Over PoS Ports 54
- APS Port Redundancy 56
- APS Module Redundancy 57
- APS Switch Redundancy 58
- Configuring SONET Framing 61
- Configuring SONET Clocking 62
- -error_rate 63
- Configuring the Signal Label 65
- SONET Events 67
- PPP Background Information 70
- VLAN xVLAN a 72
- IP Router 72
- Configuring the PoS Checksum 75
- Configuring PoS Scrambling 75
- Configuring Link Maintenance 76
- Displaying PPP Information 84
- Configuring a QoS Profile 92
- Configuring DiffServ 95
- DiffServ Classification 96
- Enhanced RED Support 99
- Configuring the PoS Module 100
- Configuring QoS Functions 101
- QoS Monitor 107
- Intra-Subnet QoS 107
- Export Criteria 112
- Unconfiguring Flow Statistics 120
- BlackDiamond 123
- Protection line 123
- Working line 123
- Virtual router 124
- Virtual APS router 127
- 192.168.10.1 192.168.10.2 127
- SONETPoS PoS 127
- Neighbor PPP router 127
- APS Benefits 130
- Table 3-16: APS Commands 134
- Enabling and Disabling APS 135
- Adding a Port to an APS Group 136
- Configuring APS Timers 139
- Configuring APS Lockout 140
- MIB Support for APS 144
- Configuring Port Tunneling 145
- Customer 146
- Configuring Port Attributes 150
- Jumbo Frame Support 152
- Configuring IGMP Attributes 153
- ExtremeWare Command 155
- New ExtremeWare Commands 156
- New Commands 157
- Changed Commands 159
- Supported MIBs and Standards 165
- SONET/SDH Support 166
- PPP Support 166
- QoS and DiffServ Support 167
- Flow Statistics Support 168
- Standards Supported for APS 169
- MIBs Supported for APS 169
- Numerics 171
- Index of Commands 177
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