Token Ring Gateways 449
Figure 12-15
Passthrough Gateways
Figure 12-16
LU Gateways
IBM S/370
Token
Ring
IBM 3172
IBM 3174
PU 2
PU 2
PU 2
PC 1
PC 2
PC 3
SSCP to PU
SSCP
to PU
SSCP to PU
VTAM
PC 1 - MAC Address - xxx
PC 2 - MAC Address - xxx
ТI see the Token Ring
PCs as PU 2sУ
With no FEP, the burden is
on host to convert
addresses
Each node has a session
with the SSCP
Each Token Ring node
defined in VTAM
PU 2
IBM S/370
Token Ring
LLC2 frames
PC 1
ТI see the Token Ring
PCs as LUs, I only see one
PU - the Novell serverУ
Novell SAA gateway
LU gateway
IBM 3720/25/45
Mainframe in New York
SDLC
FEP in Maryland
SSCP to PU session
PU
NetBIOS
over
IPX
3270 Emulation software
NetBIOS
over IPX
PC 2
Ethernet
3270 Emulation software
87200333.book Page 449 Wednesday, August 22, 2001 2:53 PM