multicast address AllSPFRouters. On nonbroadcast multiaccess networks, some
configuration information is required to discover neighbors.
• On all multiaccess networks (broadcast or nonbroadcast), the Hello Protocol elects a
default router (DR) for the network.
• The router attempts to form adjacencies with some neighbors. On multiaccess networks,
the DR determines which routers become adjacent. This behavior does not occur if a
router is configured as a passive interface because passive interfaces do not form
adjacencies.
• Adjacent neighbors synchronize topological databases.
• The router periodically advertises the link state and changes to the local state. LSAs
include information about adjacencies to enable quick detection of dead routers on the
network.
• LSAs flood throughout the area to ensure that all routers in an area use the same
topological database.
• From the database, each router calculates a shortest-path tree, with itself as root. This
shortest-path tree yields a routing table for the protocol.
OSPFv3
This section is an overview of the differences between Open Shortest Path First (OSPF)v3
protocol, developed for IPv6, and OSPFv2, used in IPv4. This information is compiled from
RFC2740.
The IPv4 terms subnet and network are replaced in IPv6 by link. An IPv6 link is a
communication medium between nodes at the link layer. You can assign multiple IP subnets
(prefixes) to a link. Two IPv6 nodes with common or different prefixes can communicate over
a single link.
OSPF for IPv6 operates on each link rather than each subnet as in IPv4. IPv6 makes the
following changes to how packets are received and to the contents of network LSAs and hello
packets:
• The OSPF packet contains no IPv6 addresses. LSA payloads carried in link state update
packets contain IPv6 addresses.
• The following IDs remain at 32-bits and are not assigned IPv6 addresses: area IDs, LSA
link state IDs, and OSPF router IDs.
• Router IDs identify neighboring routers by an IP address on broadcast and NBMA
networks in OSPFv2.
OSPFv3
Configuration — IPv6 Routing
November 2010 47
Содержание ERS 8600 series
Страница 1: ...Configuration IPv6 Routing Avaya Ethernet Routing Switch 8800 8600 7 0 NN46205 504 03 03 November 2010...
Страница 14: ...New in this release 14 Configuration IPv6 Routing November 2010...
Страница 78: ...IPv6 routing configuration 78 Configuration IPv6 Routing November 2010...
Страница 132: ...Basic IPv6 configuration using the ACLI 132 Configuration IPv6 Routing November 2010...
Страница 176: ...IPv6 routing configuration using the CLI 176 Configuration IPv6 Routing November 2010...
Страница 194: ...IPv6 routing configuration using the ACLI 194 Configuration IPv6 Routing November 2010...
Страница 198: ...IPv6 DHCP Relay configuration using Enterprise Device Manager 198 Configuration IPv6 Routing November 2010...
Страница 206: ...IPv6 DHCP Relay configuration using the CLI 206 Configuration IPv6 Routing November 2010...
Страница 224: ...IPv6 VRRP configuration using Enterprise Device Manager 224 Configuration IPv6 Routing November 2010...
Страница 238: ...IPv6 VRRP configuration using the CLI 238 Configuration IPv6 Routing November 2010...
Страница 250: ...IPv6 VRRP configuration using the ACLI 250 Configuration IPv6 Routing November 2010...
Страница 262: ...IPv6 RSMLT configuration using the CLI 262 Configuration IPv6 Routing November 2010...
Страница 268: ...IPv6 RSMLT configuration using the ACLI 268 Configuration IPv6 Routing November 2010...
Страница 292: ...Multicast protocol configuration using Enterprise Device Manager 292 Configuration IPv6 Routing November 2010...
Страница 306: ...Multicast protocol configuration using the ACLI 306 Configuration IPv6 Routing November 2010...
Страница 344: ...IPv6 traffic filter configuration using the ACLI 344 Configuration IPv6 Routing November 2010...
Страница 398: ...CLI show commands 398 Configuration IPv6 Routing November 2010...