Other Internal Improvements; Ospfv3 Limitations; Ospfv3 Configuration Example - Lenovo Flex System Fabric CN4093 Application Manual

Other Internal Improvements

OSPFv3 Limitations

OSPFv3 Configuration Example

© Copyright Lenovo 2015
assigned independently of IP address space. However, maintaining Router IDs
consistent with any legacy OSPFv2 IPv4 addressing allows for easier
implementation of both protocols.
OSPFv3 has numerous improvements that increase the protocol efficiency in
addition to supporting IPv6 addressing. These improvements change some of the
behaviors in the OSPFv3 network and may affect topology consideration, but have
little direct impact on configuration. For example:
 Addressing fields have been removed from Router and Network LSAs.
Flexible treatment of unknown LSA types to make integration of OSPFv3 easier.

 Interface network type can be specified using the command:
CN4093(config­ip­if)# ipv6 ospf network
{broadcast|non­broadcast|point­to­multipoint|point­to­point}
 For an interface network type that is not broadcast or NBMA, link LSA
suppression can be enabled so link LSA is not originated for the interface. Use
the command: CN4093(config­ip­if)# ipv6 ospf linklsasuppress
Lenovo N/OS 8.2 does not currently support the following OSPFv3 features:
 Multiple instances of OSPFv3 on one IPv6 link.
The following example depicts the OSPFv3 equivalent configuration of
"Example 3: Summarizing Routes" on page
In this example, one summary route from area 1 (stub area) is injected into area 0
(the backbone). The summary route consists of all IP addresses for the 36.:0/32
portion of the 36::0/56 network except for the routes in the 36::0/8 range.
Figure 53. Summarizing Routes
Backbone
Area 0
(0.0.0.0)
IF 3
10::1
Summary Route
10::0/56
Network
Note: You can specify a range of addresses to prevent advertising by using the
hide option. In this example, routes in the 36::0/8 range are kept private.
Use the following procedure to configure OSPFv3 support as shown in Figure
442 for OSPFv2.
Stub Area
Area 1
(0.0.0.1)
IF 4
36::1
36::0/32
ABR
(- 36::0/8)
36::0/56
Network
52:
445
Chapter 31: OSPF