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Configuring VINES Services
2-8 117372-A Rev. A
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.)
For example, if you configure a router in group mode for Frame Relay, Frame
Relay treats a group mode circuit like one circuit, even though there are physically
two links. If you leave the Split Horizon for STALK Enable parameter set to its
default, Enable, the router does not send the VINES packets out through their
original interfaces. For VINES to operate successfully, you must disable the Split
Horizon for STALK Enable parameter.
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