Enterasys Networks CSX6000 - Manual (Page 144)

USER’S GUIDE
144 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
CSX5500
CSX1200
B25 B27
B26 B28
WORKGROUP REMOTE ACCESS SWITCH
B29 E1 ONLY B-CHANNELS LAN 10BASE-T RX TX SERVICE B31
B30 L1
B21 B23
B22 B24
B17 B19
B18 B20
B13 B15
B14 B16 E1 D T1 D B9 B11
B10 B12
B5 B7
B6 B8
B1 B3
B2 B4
POWER