Managing Message Digest Keys - Siemens RUGGEDCOM ROX II User Manual

RUGGEDCOM ROX II
CLI User Guide
cost-bandwidth parameter set for the interface. For more information about the auto-cost-
bandwidth, refer to
The default OSPF reference bandwidth for link cost calculations is 100 Mbit. The reference
bandwidth divided by the link bandwidth gives the default cost for a link, which by default is 10. If a
specific bandwidth is assigned to each link, the costs take this into account.
Link costs can be assigned manually under OSPF to each routable interface. This should be done
when the speed of the link should not be used as the method for choosing the best link.
Parameter
authentication { authentication }
cost { cost }
hello-interval { hello-interval }
priority { priority }
passive
retransmit-interval { retransmit-interval }
transmit-delay { transmit-delay }
Type commit and press Enter to save the changes, or type revert and press Enter to abort.
5.
Section 5.21.10

Managing Message Digest Keys

Message digest keys use the MD5 algorithm to authenticate OSPF neighbors and prevent unauthorized routers
from joining the OSPF network. By enabling authentication and configuring a shared key on all the routers, only
routers which have the same authentication key will be able to send and receive advertisements within the OSPF
network.
An ID for each key allows the router to use multiple passwords and prevent replay attacks where OSPF packets
are captured, modified and transmitted to a router. To change passwords, simply create a new key and delete the
old key.
Managing Message Digest Keys
Section 5.40.1, "Configuring Costing for Routable
Description
Synopsis: { message-digest, null }
The authentication type on this interface.
Synopsis: An integer between 1 and 65535
The link cost. If not set, the cost is based on calculation of
reference bandwidth divide by interface bandwidth.
Synopsis: An integer between 1 and 65535
Default: 10
The time (in seconds) between sending hello packets.
Synopsis: An integer between 0 and 255
Default: 1
Priority of interface.
Synopsis: true or false
Default: true
Whether an interface is active or passive. Passive interfaces do
not send LSAs to other routers and are not part of an OSPF area.
Synopsis: An integer between 1 and 65535
Default: 5
Time (in seconds) between retransmitting lost link state
advertisements.
Synopsis: An integer between 1 and 65535
Default: 1
The link state transmit delay (in seconds).
Chapter 5
Setup and Configuration
Interfaces".
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