IPv6 Configuration Guide K/KA/KB.15.15

Configuring DHCPv6 service requirements..........................................................................186
Configuring the range for intervals between RA transmissions on a VLAN...............................187
Setting or changing the hop-limit for host-generated packets.............................................188
Setting or changing the default router lifetime.................................................................188
Changing the reachable time duration for neighbors............................................................188
Setting or changing the Neighbor Discovery retransmit timer.................................................189
Configuring the global unicast prefix and lifetime for hosts on a VLAN....................................189
Suppressing Router Advertisements on a VLAN....................................................................194
Restricting IPv6 Router Advertisements.................................................................................195
Configuring RA Guard.................................................................................................195
Operating Notes.........................................................................................................195
Displaying the Router Advertisement configuration.....................................................................196
General RA operation...........................................................................................................199
RA basics.......................................................................................................................200
About setting up your IPv6 RA policy..................................................................................200
Steps for configuring IPv6 RAs................................................................................................200
Guidelines for configuring RAs on multiple routing switches for the same VLAN............................201
9 DHCPv6-Relay.......................................................................................203
Configuring DHCPv6-relay.....................................................................................................203
Viewing the DHCPv6-relay configuration.............................................................................204
DHCPv6-relay operating notes...........................................................................................205
About configuring DHCPv6 relay............................................................................................206
DHCPv6 request forwarding..............................................................................................206
DHCPv6-relay helper addresses.........................................................................................206
General steps for enabling DHCP relay operation................................................................206
Multiple-hop forwarding of DHCPv6 service requests.................................................................207
10 OSPFv3 Routing...................................................................................209
OSPFv3 RFC compliance.......................................................................................................209
Activating OSPFv3................................................................................................................209
Configuring OSPFv3 on the routing switch...............................................................................209
Router ID or IPv4 loopback address requirement..................................................................209
Enabling IPv6 Routing......................................................................................................210
Enabling global OSPFv3 routing........................................................................................210
Assigning the routing switch to OSPFv3 areas......................................................................210
Configuring an OSPFv3 backbone or normal area..........................................................211
Configuring a stub or NSSA area..................................................................................212
Enabling OSPFv3 on an interface and assigning one or more VLANs to each area..................213
Assigning IPv6 loopback addresses to an area (optional)......................................................214
OSPFv3 redistribution of loopback addresses..................................................................215
Configuring route-maps.........................................................................................................215
Enabling route redistribution...................................................................................................215
Modifying the default metric for redistribution...........................................................................216
Modifying the redistribution metric type...................................................................................216
Enabling redistribution of loopback IPv6 addresses in OSPFv3 when the addresses are not assigned
to an OSPFv3 area..........................................................................................................217
Verifying the OSPFv3 redistribution of loopback interfaces....................................................217
Configuring ranges on an ABR to reduce advertising to the backbone.........................................218
Influencing route choices by changing the administrative distance default.....................................220
Enforcing strict LSA operation for graceful restart helper mode....................................................221
Adjusting performance by changing the VLAN interface settings.................................................221
Cost per interface............................................................................................................221
Dead interval per interface................................................................................................221
Hello interval per interface................................................................................................222
Priority per interface.........................................................................................................222
8 Contents