Cisco MWR 1941-DC User Manual page 13

Cisco MWR 1941-DC Router with the Cisco IOS IP-RAN Feature Set
Setting the Speed and Duplex Mode
The Fast Ethernet ports of the MWR 1941-DC can run in full or half duplex mode and at 100 Mbps or
10 Mbps. The MWR 1941-DC also has an auto-negotiation feature that allows the router to negotiate the
speed and duplex mode with the corresponding interface on the other end of the connection.
Auto negotiation is the default setting for the speed and transmission mode.
When configuring an interface speed and duplex mode, note these guidelines:
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To configure the speed and duplex operation, use the following commands while in interface
configuration mode:
Command
Step 1
Router(config-if)# duplex [auto | half | full]
Step 2
Router(config-if)# speed [auto | 100 | 10]
Configuring Routing Protocol Attributes
When used in the CDMA IP-RAN solution, the MWR 1941-DC must be configured to support the OSPF
routing protocol.
To configure OSPF routing protocol attributes, use the following commands while in interface
configuration mode:
Command
Step 1
Router(config-if)# ip ospf message-digest-key key-id
md5 key
Step 2
Router(config-if)# ip ospf hello-interval seconds
Step 3
Router(config-if)# ip ospf dead-interval seconds
If both ends of the line support auto negotiation, we highly recommend the default auto negotiation
settings.
When the auto negotiation is turned on for either speed or duplex, it auto negotiates both speed and
duplex.
If one interface supports auto negotiation and the other end does not, configure duplex and speed on
both interfaces; do not use the auto setting on the supported side or the duplex setting will be half.
Purpose
Specifies the duplex operation.
Specifies the speed.
Purpose
Enables OSPF Message Digest 5 (MD5)
authentication.
Configures the interval between hello packets that the
Cisco IOS software sends on the interface.
Configures the interval at which hello packets must
not be seen before neighbors declare the router down.
Configuring Tasks
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