Cabletron Systems CSX1000 - Manual (Page 116)

USER’S GUIDE
116 CyberSWITCH
In example 2, the WAN UnNumbered interface is used to eliminate an unnecessary IP Subnet. The
RLAN interface is unique in that it extends the IP network over the WAN to remote devices which
access the network using a bridge device. Thus it makes a simple bridge device appear to be an IP
router. This is accomplished by having the system extend its Ethernet to handle the ARPs for the
remote bridge.
ISDN
Host
File
Server
128.1.1.8 128.1.1.3
Subnet 128.1.1.0
Interfaces:
LAN Interface 128.1.1.1
RLAN Interface
131.3.3.1
WAN UnNumbered Interface
both WAN Interfaces use
one PRI line
Subnet 193.3.3.0
(Uses UnNumbered WAN Interface)
131.3.3.1
128.1.1.1
Host
Bridge
131.3.3.2
Host
193.3.3.1 193.3.3.3
Subnet 131.3.3.0
(Uses RLAN Interface)
Example 2: LAN, WAN UnNumbered, WAN Remote LAN Interfaces
POWER SERVICE TX RX 10BASE - T LAN B-CHANNELS E1 ONLY
B2 B4 B6 B8 B26 B28 B22 B24 B18 B20 B14 B16 B10 B12 B30 L1
B1 B3 B5 B7 B25 B27 B21 B23 B17 B19 B13 B15 B9 B11 B29 B31 E1 D T1 D
CSX1200
CSX1200
POWER SERVICE TX RX 10BASE - T LAN B-CHANNELS E1 ONLY
B2 B4 B6 B8 B26 B28 B22 B24 B18 B20 B14 B16 B10 B12 B30 L1 B1 B3 B5 B7 B25 B27 B21 B23 B17 B19 B13 B15 B9 B11 B29 B31 E1 D T1 D