Introduction To Ospf Configuration Tasks - Huawei Quidway S5600 Series Operation Manual

Operation Manual – Routing Protocol
Quidway S5600 Series Ethernet Switches-Release 1510
II. Type-7 LSAs
In RFC 1587 (OSPF NSSA Option), Type-7 LSA, a new LSA type, is added.
As described in RFC 1587, Type-7 LSAs and Type-5 LSAs mainly differ in the following
two ways:
Type-7 LSAs are generated and advertised in an NSSA, where Type-5 LSAs will
not be generated or advertised.
Type-7 LSAs can only be advertised in an NSSA area. When Type-7 LSAs reach
an ABR, the ABR can convert part of the routing information carried in the Type-7
LSAs into Type-5 LSAs and advertise the Type-5 LSAs. Type-7 LSAs are not
directly advertised to other areas (including the backbone area).
4.1.7 OSPF Features
S5600 series support the following OSPF features:
Stub area: Stub area is defined to reduce the cost for the routers in the area to
receive ASE routes.
NSSA area: NSSA area is defined to remove the limit on the topology in a stub
area.
OSPF multi-process: Multiple OSPF processes can be run on a router.
Sharing discovered routing information with other dynamic routing protocols: At
present, OSPF supports importing the routes of other dynamic routing protocols
(such as RIP), and static routes as OSPF external routes into the AS to which the
router belongs. In addition, OSPF supports advertising the routing information it
discovered to other routing protocols.
Authentication key: OSPF supports the authentication of the packets between
neighboring routers in the same area by using one of the two methods: plain text
authentication key and MD5 authentication key.
Flexible configuration of router interface parameters: For a router interface, you
can configure the following OSPF parameters: output cost, Hello interval, interface
transmission delay, route priority, dead time for a neighboring router, and packet
authentication mode and authentication key.
Virtual link: Virtual links can be configured.

4.2 Introduction to OSPF Configuration Tasks

Table 4-1 OSPF configuration tasks
Basic OSPF Configuration
OSPF Area Attribute Configuration
Configuration Task
Huawei Technologies Proprietary
4-8
Chapter 4 OSPF Configuration
Referenc
Description
e section
Required 4.3
Optional 4.4