Ospf Authentication - Allied Telesis SwitchBlade x908 Series Software Reference Manual

Device 2
awplus(config)#router ospf 100
awplus(config-router)#ospf router-id
10.10.23.2
awplus(config-router)#network 10.10.23.0/
24 area 1
awplus(config-router)#network 10.10.24.0/
24 area 2
awplus(config-router)#area 1 virtual-link
10.10.21.1
Names of Commands Used
area
Validation Commands
show ip ospf

OSPF Authentication

In the AlliedWare Plus
authentication (Type 0), Simple Text (Type 1) authentication and MD5 (Type 2)
authentication. With null authentication, routing exchanges over the network are not
authenticated. In Simple Text authentication, the authentication type is the same for all OSPF
routers that communicate using OSPF in a network. For MD5 authentication, you configure a
key and a key-id on each OSPF router. The OSPF router generates a message digest on the
basis of the key, key ID and the OSPF packet and adds it to the OSPF packet.
The Authentication type can be configured on a per-interface basis or a per-area basis.
Additionally, Interface and Area authentication can be used together. Area authentication is
used for an area and interface authentication is used for a specific interface in the area. If the
Interface authentication type is different from Area authentication type, Interface authentication
type overrides the Area authentication type. If the Authentication type is not specified for an
interface, the Authentication type for the area is used. The authentication command
descriptions contain details of each type of authentication. Refer to
Commands
In this example, the OSPF routers are Allied Telesis managed Layer 3 switches. Switch 1
and Switch 2 are configured for both the interface and area authentications. The
authentication type of interface vlan2 on Switch 1 and interface vlan2 on Switch 2
is md5 mode and is defined by the area authentication command; however, the
authentication type of interface vlan3 on Switch 1 and interface vlan4 on Switch 2
is plain text mode and is defined by the ip ospf authentication command. This
interface command overrides the area authentication command.
C613-50007-01 REV B
virtual-link, network area
virtual-links, show ip ospf
TM
implementation there are three types of OSPF authentications--Null
for OSPF authentication commands.
Software Reference for SwitchBlade® x908, x900 and x600 Series Switches
TM
AlliedWare Plus Operating System - Software Version 5.3.1
Configure the Routing process and specify the Process ID
(100). The Process ID should be a unique positive integer
identifying the routing process.
Configure OSPF Router ID (10.10.23.2) for this
router.
Define interfaces on which OSPF runs and associate the
area IDs (1 and 2) with the interface.
Configure a virtual link between this router R2 and
R1(Router ID 10.10.21.1) through transit area 1.
neighbor, show ip ospf,
OSPF Configuration
show ip ospf route
Chapter 36, OSPF
35.11