Alaxala AX2200S Series Configuration Manual page 20

Contents
20.2.3 Fault monitoring methods .................................................................................. 358
20.2.4 Switching communication paths......................................................................... 358
20.3 Overview of single ring operation .................................................................................... 359
20.3.1 Normal ring operation ........................................................................................ 359
20.3.2 Operation when a fault is detected .................................................................... 359
20.3.3 Operation when recovery is detected ................................................................ 361
20.4 Overview of multi-ring operation ..................................................................................... 363
20.4.1 Normal ring operation ........................................................................................ 363
20.4.2 Operation for shared link faults and restoration ................................................. 365
20.4.3 Operation for faults and restoration other than for shared links in a shared link
non-monitoring ring ............................................................................................. 367
20.4.4 Faults and restoration other than for shared links in a shared link monitoring ring
............................................................................................................................ 369
20.5 Multi-fault monitoring functionality for the Ring Protocol ................................................. 372
20.5.1 Overview ............................................................................................................ 372
20.5.2 Basic configuration for the multi-fault monitoring functionality ........................... 373
20.5.3 Overview of operation for multi-fault monitoring ................................................ 373
20.5.4 Operation when multi-faults occur ..................................................................... 374
20.5.5 Operation during multi-fault recovery ................................................................. 377
20.6 Ring Protocol network design ......................................................................................... 380
20.6.1 Using VLAN mappings ....................................................................................... 380
20.6.2 Using forwarding-delay-time for control VLANs ................................................. 380
20.6.3 Prohibited Ring Protocol configurations ............................................................. 381
20.6.4 Prohibited configurations for the multi-fault monitoring functionality ................. 381
20.7 Notes on Ring Protocol usage ........................................................................................ 382
21. Settings and Operation for the Ring Protocol ....................................................................... 385
21.1 Configuration ................................................................................................................... 386
21.1.1 List of configuration commands ......................................................................... 386
21.1.2 Flow of Ring Protocol settings ........................................................................... 386
21.1.3 Configuring ring IDs ........................................................................................... 387
21.1.4 Setting control VLANs ........................................................................................ 387
21.1.5 Setting VLAN mappings ..................................................................................... 388
21.1.6 Configuring a VLAN group ................................................................................. 389
21.1.7 Settings for modes and ring ports (for single rings and multi-ring configurations
without shared links) ........................................................................................... 389
21.1.8 Configuring modes and ring ports (for multi-ring configurations with shared links)
............................................................................................................................ 390
21.1.9 Setting various parameters ................................................................................ 393
21.1.10 Setting the multi-fault monitoring functionality ................................................. 393
21.2 Operation ......................................................................................................................... 395
21.2.1 List of operation commands ............................................................................... 395
21.2.2 Checking Ring Protocol statuses ....................................................................... 395
22. Using the Ring Protocol with Spanning Tree Protocols/GSRP ........................................... 397
22.1 Using the Ring Protocol with Spanning Tree Protocols................................................... 398
22.1.1 Overview ............................................................................................................ 398
22.2 Using the Ring Protocol with GSRP ................................................................................ 400
22.2.1 Operational overview ......................................................................................... 400
23. DHCP Snooping ........................................................................................................................ 403
23.1 Description of the DHCP snooping functionality ............................................................. 404
23.1.1 Monitoring DHCP packets .................................................................................. 406
23.1.2 Terminal filtering ................................................................................................. 409
23.1.3 Forwarding DHCP packets with Option 82 ........................................................ 411
23.1.4 Limiting the rate of DHCP packet reception ....................................................... 411
23.1.5 Dynamic ARP inspection functionality ............................................................... 412
23.1.6 Saving a binding database ................................................................................. 415
23.1.7 Notes on using DHCP snooping ........................................................................ 417
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