Baseline: Intra-domain routing using default settings................................................................. 277
Basic inter-domain protocol redistribution................................................................................... 280
Finer control of inter-domain routing using route policy.............................................................. 282
Redistribution using tags.............................................................................................................286
Chapter 13 ICMP Router Discovery Protocol............................................ 288
Configuring IRDP................................................................................................................................... 288
Enabling IRDP globally............................................................................................................... 288
Enabling IRDP on an individual VLAN interface......................................................................... 289
Viewing IRDP information...................................................................................................................... 290
Chapter 14 Dynamic Host Configuration Protocol....................................291
Enabling DHCP relay............................................................................................................................. 291
Using DHCP Option 12 to send a hostname......................................................................................... 291
Configuring a BOOTP/DHCP relay gateway..........................................................................................292
Viewing the BOOTP gateway......................................................................................................292
Operating notes................................................................................................................293
Configuring an IP helper address.......................................................................................................... 293
Operating notes...........................................................................................................................293
Disabling the hop count in DHCP requests............................................................................................293
Operating notes...........................................................................................................................294
Verifying the DHCP relay configuration..................................................................................................294
Viewing the DHCP relay setting.................................................................................................. 294
Viewing DHCP helper addresses................................................................................................294
Viewing the hop count setting..................................................................................................... 295
Viewing the MAC address for a routing switch.......................................................................................295
Configuring Option 82............................................................................................................................ 296
Operating notes...........................................................................................................................298
Overview of DHCP.................................................................................................................................299
DHCP packet forwarding.............................................................................................................299
Unicast forwarding............................................................................................................299
Broadcast forwarding....................................................................................................... 299
Enabling DHCP relay operation.................................................................................................. 299
Hop count in DHCP requests.................................................................................................................300
DHCP Option 82.................................................................................................................................... 300
Option 82 server support.............................................................................................................301
General DHCP Option 82 requirements and operation...............................................................301
Requirements................................................................................................................... 301
General DHCP-relay operation with Option 82................................................................ 301
Option 82 field content................................................................................................................ 302
Forwarding policies..................................................................................................................... 303
Multiple Option 82 relay agents in a client request path............................................................. 305
Validation of server response packets.........................................................................................306
Multinetted VLANs...................................................................................................................... 308
Chapter 15 User Datagram Protocol...........................................................309
Configuring and enabling UDP broadcast forwarding............................................................................309
Globally enabling UDP broadcast forwarding............................................................................. 309
Configuring UDP broadcast forwarding on individual VLANs..................................................... 309
Viewing the current IP forward-protocol configuration.................................................................311
Operating notes for UDP broadcast forwarding.......................................................................... 312
Maximum number of entries.............................................................................................312
TCP/UDP port number ranges......................................................................................... 312
12 Aruba 3810 / 5400R Multicast and Routing Guide for ArubaOS-
Switch 16.08