Configuring OSPF and OSPFv3
933
What Are OSPF Routers and LSAs?
When a PowerConnect switch is configured to use OSPF for dynamic
routing, it is considered to be an OSPF router. OSPF routers keep track of the
state of the various links they send data to. Routers exchange OSPF link state
advertisements (LSAs) with other routers. External LSAs provide information
on static routes or routes learned from other routing protocols.
OSPF defines various router types:
• Backbone routers have an interface in Area 0.
• Area border routers (ABRs) have interfaces in multiple areas.
• Internal routers have all their interfaces in a single OSPF area.
• Autonomous system boundary routers (ASBRs) redistribute routes from
other protocols and originate external LSAs.
How Are Routes Selected?
OSPF determines the best route using the route metric and the type of the
OSPF route. The following order is used for choosing a route if more than one
type of route exists:
1
Intra-area (the destination prefix is in the same area as the router
computing the route)
2
Inter-area (the destination is not in the same area as the router computing
the route
3
External Type 1
4
External Type 2
How Are OSPF and OSPFv3 Different?
OSPFv3 is the Open Shortest Path First routing protocol for IPv6. It is similar
to OSPFv2 in its concept of a link state database, intra/inter area, and AS
external routes and virtual links. It differs from its IPv4 counterpart in a
number of respects. Peering is done through link-local addresses, and the
protocol is link rather than network centric; and addressing semantics have
been moved to leaf LSAs.
Содержание PowerConnect 7024
Страница 134: ...134 Setting Basic Network Information ...
Страница 290: ...290 Managing General System Settings Figure 11 14 SNTP Servers Table ...
Страница 348: ...348 Configuring SNMP ...
Страница 430: ...430 Monitoring Switch Traffic ...
Страница 444: ...444 Configuring iSCSI Optimization ...
Страница 521: ...Configuring 802 1X and Port Based Security 521 Figure 19 8 Configure Port Security Settings 5 Click Apply ...
Страница 538: ...538 Configuring 802 1X and Port Based Security ...
Страница 585: ...Configuring VLANs 585 Figure 21 5 Add Ports to VLAN 4 Click Apply 5 Verify that the ports have been added to the VLAN ...
Страница 594: ...594 Configuring VLANs Figure 21 16 GVRP Port Parameters Table ...
Страница 600: ...600 Configuring VLANs Figure 21 23 Double VLAN Port Parameter Table ...
Страница 658: ...658 Configuring the Spanning Tree Protocol ...
Страница 693: ...Configuring Port Based Traffic Control 693 Figure 24 3 Storm Control 5 Click Apply ...
Страница 780: ...780 Configuring Connectivity Fault Management ...
Страница 804: ...804 Snooping and Inspecting Traffic Figure 27 17 DAI Interface Configuration Summary ...
Страница 818: ...818 Snooping and Inspecting Traffic ...
Страница 836: ...836 Configuring Link Aggregation ...
Страница 882: ...882 Configuring DHCP Server Settings ...
Страница 916: ...916 Configuring L2 and L3 Relay Features Figure 33 3 DHCP Relay Interface Summary ...
Страница 924: ...924 Configuring L2 and L3 Relay Features Figure 33 12 IP Helper Statistics ...
Страница 930: ...930 Configuring L2 and L3 Relay Features ...
Страница 1004: ...1004 Configuring OSPF and OSPFv3 ...
Страница 1044: ...1044 Configuring VRRP ...
Страница 1057: ...Configuring IPv6 Routing 1057 Figure 37 9 IPv6 Route Preferences ...
Страница 1064: ...1064 Configuring IPv6 Routing ...
Страница 1084: ...1084 Configuring DHCPv6 Server and Relay Settings ...
Страница 1091: ...Configuring Differentiated Services 1091 Figure 39 5 DiffServ Class Criteria ...
Страница 1114: ...1114 Configuring Differentiated Services ...
Страница 1130: ...1130 Configuring Class of Service ...
Страница 1136: ...1136 Configuring Auto VoIP ...
Страница 1216: ...1216 Managing IPv4 and IPv6 Multicast ...