Transmit delay, Cost, Hello interval – Comtech EF Data SLM-5650A Vipersat Parameter Editor User Manual

Page 49: Topology, Priority, Dead interval

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Chapter

2 -

Using Parameter Editor

2-33

Routing

Transmit Delay

The Transmit Delay parameter sets the time period before transmitting the

LSA. The default value is 1 second.

Cost

The Cost setting represents the link cost for the specified interface. This value is

embedded in the router’s LSA metric field and used for SPF calculation.
Default value is 65535. Range is 1-65535.

Hello Interval

The Hello Interval parameter is the timer value for sending the Hello packet on

the specified interface. This is a periodic handshake and ‘keepalive’ message

that establishes and tests the link up/down status to determine neighbor reach-

ability.
Default value is 10 seconds. Range is 1-65535.

Topology

The Topology parameter identifies the network type for the specified interface,

Star or Mesh. Note that this setting is only applicable to Hub routers; therefore,

this field only appears when the Working Mode is set to either Vipersat Hub or

Multipoint Hub.
In Star mode, route changes at each Remote are only updated in the Hub. In

Mesh mode, route changes at each Remote are updated in the Hub as well as

distributed to all of the other Remotes.

Caution: Setting the Topology for Mesh may require a larger number of routes,

with the possibility of exceeding the limit of 270 total routes per

modem/router.

Priority

The higher the value for this setting, the more eligible the router will be to

become the Designated Router. The Priority is also used for determining a

Backup Designated Router. A value of zero (0) eliminates the router from being

eligible for the DR or the BDR.
Default value is 1. Range is 0-255.

Dead Interval

The Dead Interval parameter is a timer value used for specifying the period

after which a non-responding neighbor is considered dead. Note that this setting

must be the same for all routers attached to a common network.

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