Avaya Configuring VINES Services Manual de usuario descargar pdf (Pagina 46)

Configuring VINES Services

2-8 114054 Rev. A

Help Thy Neighbor Support

VINES services for the router supports the Help Thy Neighbor feature. If a

neighbor advertises that a network is unreachable, and the router has an alternative

connection to that network, the router issues a “changes only” routing update.

This advertises the connection to the neighbor and in the next scheduled update.

For details about the Help Thy Neighbor feature, refer to VINES Protocol

Deﬁnition, Banyan Systems Inc., June 1993.

Using Multipath with Load Sharing

A router on a VINES network does not record multiple nonequal-cost paths to the

same destination. However, when one path fails, the router quickly learns these

other paths and uses one as an alternate path.

When there are multiple equal-cost paths to a destination network on a VINES

network, the router records all of the paths in the VINES routing table. For data

transfer to this destination, the router accesses the multiple paths in a round-robin

fashion to achieve load sharing.

Partially Meshed Frame Relay Network Support

Some Frame Relay networks are not fully meshed, meaning that some nodes do

not have virtual circuits to all other nodes in the network. In that case, to

successfully route VINES Security, Net Time, File Service, and StreetTalk packets

over the network, the router may have to send frames back through their interface

of origin.

Banyan developed Split Horizon so that a router running VINES does not

advertise routes to an interface where it learned those routes. However, Split

Horizon alone is not sufﬁcient to work on Frame Relay conﬁgurations that are not

fully meshed. Therefore, you must disable the Split Horizon for STALK Enable

parameter. (Refer to “Editing VINES Interface Parameters” in Chapter 4 for

details about disabling this parameter.)

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Avaya Configuring VINES Services Manual de usuario Pagina 46