Ericsson ECN330, User Manual

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Configuring the ECN330-switch
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• This interval must be set to the same value for all routers on the
network.
• Using a smaller Hello interval allows changes in the network
topology to be discovered more quickly, but may result in more
routing traffic.
• Rtr Dead Interval – Sets the interval at which hello packets are not
seen before neighbors declare the router down. This interval must be
set to the same value for all routers on the network. (Range: 1-65535
seconds; Default: 40, or 4 times the Hello Interval)
• Cost – Sets the cost of sending a packet on an interface, where higher
values indicate slower ports. (Range: 1-65535; Default: 1)
• This router uses a default cost of 1 for all ports. Therefore, if using
ports at 100 Mbps, the cost should be reset to some value greater
than 1.
• Routes are subsequently assigned a metric equal to the sum of all
metrics for each interface link in the route.
• Authentication Type – Specifies the authentication type used for an
interface. (Options: None, Simple password, MD5; Default: None)
• Use authentication to prevent routers from inadvertently joining an
unauthorized area. Configure routers in the same area with the
same password or key.
• When using simple password authentication, a password is
included in the packet. If it does not match the password configured
on the receiving router, the packet is discarded. This method
provides very little security as it is possible to learn the
authentication key by snooping on routing protocol packets.
• When using Message-Digest 5 (MD5) authentication, the router
uses the MD5 algorithm to verify data integrity by creating a 128-bit
message digest from the authentication key. Without the proper key
and key-id, it is nearly impossible to produce any message that
matches the pre-specified target message digest.
• The Authentication Key and Message Digest Key-id must be used
consistently throughout the autonomous system. (Note that the
Message Digest Key-id field is disabled when this authentication
type is selected.)