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Virtual Routing Node (VRN). This TG identifies the direct connection from the port
to the connection network. The CP name of the VRN is the connection network
name.
Since the connectivity is represented by a TG from a given node to a VRN, normal
topology and routing services (TRS) can be used by the network node server to
calculate the direct path between any two nodes attached to the connection
network. DLC signaling information is returned from the destination node during the
normal locate process to enable the origin node to establish a connection directly to
the destination node.
The following are limitations on using APPN Frame Relay BAN connection
networks:
v The same connection network can be defined on only one SATF.
v All frame relay ports belonging to the same connection network on the router
must use the same DLCI number to connect to the frame relay network.
v When bridging is used instead of BAN, all frame relay ports belonging to the
same connection network on the router must have the same BNI MAC
address/SAP pair defined.
v CP-CP sessions cannot be established over links established through a
connection network.
Sample APPN Frame Relay BAN Connection Network Definitions
Example 1
Note: The BDA address must be defined on the connection network
definition.
Example 2
Figure 5. APPN Frame Relay Bridged Frame/BAN Connection Network
Figure 6. Single Connection Network using BAN with 1 Frame Relay Port
APPN
Chapter 1. APPN 45