Black Box LR1102A-T1/E1, LR1112A-T1/E1, LR1114A-T1/E1 Single Subnet, Split Subnet, IP Multiplexing

IP Multiplexing

6.1.4 Single Subnet

The emphasis in the single subnet approach is that all seven devices have interfaces in a single 28-bit subnet 192.1.1.0 / 28. The WAN addressing utilizes reserved address space.

Table 6 Single Subnet Addressing

POP Router	e0:	192.1.1.1/28
POP Black Box	e0:	192.1.1.2/28
	wan1:	10.1.1.1/30
	wan2:	10.1.1.5/30
	wan3:	10.1.1.9/30
Black Box 1	e0:	192.1.1.3/28
	wan1:	10.1.1.2/30
Router 1	e0:	192.1.1.4/28
Black Box 2	e0:	192.1.1.5/28
	wan1:	10.1.1.6/30
Router 2	e0:	192.1.1.6/28
Router/DSU	s0:	192.1.1.7/28

6.1.5 Split Subnet

This is similar to the single subnet scheme in that all four routers are in the same 28-bit subnet, but the Black Box products are on smaller, 30-bit subnets.

Table 7 Split Subnet Addressing

POP Router	e0:	192.1.1.1/28
POP Black Box	e0:	192.1.1.2/30
	wan1:	10.1.1.1/30
	wan2:	10.1.1.5/30
	wan3:	10.1.1.9/30
Black Box 1	e0:	192.1.1.5/30
	wan1:	10.1.1.2/30
Router 1	e0:	192.1.1.6/28
Black Box 2	e0:	192.1.1.9/30
	wan1:	10.1.1.6/30
Router 2	e0:	192.1.1.10/28
Router/DSU	s0:	192.1.1.14/28

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