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6-21
Cisco Nexus 7000 Series NX-OS Unicast Routing Configuration Guide, Release 4.x
OL-20002-02
Chapter 6 Configuring OSPFv2
Configuring Basic OSPFv2
Configuring Authentication for an Interface
You can configure authentication for individual interfaces in the area. Interface authentication
configuration overrides area authentication.
BEFORE YOU BEGIN
Ensure that you have enabled the OSPF feature (see the “Enabling the OSPFv2 Feature” section on
page 6-14).
Ensure that all neighbors on an interface share the same authentication configuration, including the
shared authentication key.
Create the key-chain for this authentication configuration. See the Cisco NX-OS Security Configuration
Guide.
Note For OSPFv2, the key identifier in the key key-id command supports values from 0 to 255 only.
Ensure that you are in the correct VDC (or use the switchto vdc command).
SUMMARY STEPS
1. config t
2. interface interface-type slot/port
3. ip ospf authentication [message-digest]
4. ip ospf authentication key-chain key-id (Optional)
5. ip ospf authentication-key [0 | 3] key (Optional)
ip ospf message-digest-key key-id md5 [0 | 3] key (Optional)
6. show ip ospf instance-tag interface interface-type slot/port
7. copy running-config startup-config
Step 6
show ip ospf instance-tag interface
interface-type slot/port
Example:
switch(config-if)# show ip ospf 201
interface ethernet 1/2
(Optional) Displays OSPF information.
Step 7
copy running-config startup-config
Example:
switch(config)# copy running-config
startup-config
(Optional) Saves this configuration change.
Command Purpose
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