Visara CNA-8000 Planning Guide - Manual (Page 29)

CNA-8000 Migration and Planning Guide
707156-002 3-3
Directing Traffic Through the CNA-8000
The CNA-8000 is capable of directing traffic to multiple host destinations. The ability to
communicate through multiple ESCON and FICON interfaces, through ESCON
directors, and through EMIF channels, allows the CNA-8000 to direct traffic to multiple
VTAM destinations. Each VTAM XCA definition assigns an ESCON subchannel to
receive the traffic. Each VTAM XCA pipe uses a different SAP assignment. The CNA-
8000 also supports multiple network interfaces and can support multiple SAPs on each
network interface. Gateway Circuits configured on the CNA-8000 are used to map SAP
connections on the network interfaces to the proper ESCON or FICON subchannel (and
VTAM SAP). Multiple CNA-8000 SAPs can be mapped to the same ESCON and FICON
subchannel. This allows traffic to come through multiple network interfaces, and be
mapped through multiple CU subchannels, over two ESCON and/or FICON interfaces to
direct the traffic to multiple LPARs if needed.
XCA Pipe
XCA Pipe
ESCON
VTAM
CNA-8000
Switched
Definitions
Ethernet
Ethernet
ETH0
ETH1
SAP04
SAP08
IP Traffic
IP Traffic
DLSw
Gateway
DLSw
Gateway