Handbook

N8406-023 1Gb Intelligent L3 Switch Application Guide 5
Routing between IP subnets ................................................................................................................................. 90
Example of subnet routing .................................................................................................................................... 92
Using VLANs to segregate broadcast domains .............................................................................................. 94
Routing Information Protocol
Distance vector protocol ....................................................................................................................................... 96
Stability ................................................................................................................................................................. 96
Routing updates ................................................................................................................................................... 96
RIPv1 .................................................................................................................................................................... 96
RIPv2 .................................................................................................................................................................... 96
RIPv2 in RIPv1 compatibility mode ...................................................................................................................... 97
RIP Features ........................................................................................................................................................ 97
Poison ............................................................................................................................................................. 97
Triggered updates ........................................................................................................................................... 97
Multicast .......................................................................................................................................................... 97
Default ............................................................................................................................................................. 97
Metric .............................................................................................................................................................. 97
Authentication ................................................................................................................................................. 97
RIP configuration example ................................................................................................................................... 98
IGMP Snooping
Introduction ........................................................................................................................................................... 99
Overview ............................................................................................................................................................... 99
FastLeave ....................................................................................................................................................... 99
IGMP Filtering ............................................................................................................................................... 100
Static multicast router .................................................................................................................................... 100
IGMP Snooping configuration example ......................................................................................................... 100
OSPF
OSPF overview ................................................................................................................................................... 109
Types of OSPF areas .................................................................................................................................... 109
Types of OSPF routing devices .................................................................................................................... 110
Neighbors and adjacencies ........................................................................................................................... 111
Link-State Database ...................................................................................................................................... 111
Shortest Path First Tree ................................................................................................................................ 111
Internal versus external routing ..................................................................................................................... 111
OSPF implementation ........................................................................................................................................ 112
Configurable parameters ............................................................................................................................... 112
Defining areas ............................................................................................................................................... 112
Interface cost ................................................................................................................................................. 114
Electing the designated router and backup ................................................................................................... 114
Summarizing routes ...................................................................................................................................... 114
Default routes ..................................................................................................................................................... 114
Virtual links .................................................................................................................................................... 115
Router ID ....................................................................................................................................................... 116
Authentication ............................................................................................................................................... 116
Host routes for load balancing ...................................................................................................................... 117
OSPF features not supported ....................................................................................................................... 118
OSPF configuration examples ............................................................................................................................ 118
Example 1: Simple OSPF domain (AOS CLI example) ................................................................................ 118
Example 2: Virtual links ................................................................................................................................. 126
Example 3: Summarizing routes ................................................................................................................... 129
Verifying OSPF configuration ........................................................................................................................ 130
Remote monitoring
Introduction ......................................................................................................................................................... 131
Overview ............................................................................................................................................................. 131
RMON group 1 — statistics ........................................................................................................................... 131
RMON group 2 — history .............................................................................................................................. 134
RMON group 3 — alarms .............................................................................................................................. 136
RMON group 9 — events .............................................................................................................................. 140
High availability
Introduction ......................................................................................................................................................... 142
Uplink Failure Detection ..................................................................................................................................... 142
Failure Detection Pair .................................................................................................................................... 143
Spanning Tree Protocol with UFD ................................................................................................................. 143