|-------------------------------|
				|                               |
				|                               |
				|                               |
	NWworkstation1		|                               |
				|                               |
				|                               |
				|                               |
				|-------------------------------|
				|interface | address            |
				|-------------------------------|
:




				|-------------------------------|
				|          |                    |
				|-------------------------------|
				|                               |
	NWrouter		|                               |
				|                               |
				|                               |
				|                               |
				|-------------------------------|
				|          |                    |
				|-------------------------------|




				|-------------------------------|
				|          |                    |
				|-------------------------------|
				|                               |
	ISrouter		|                               |
				|                               |
				|                               |
				|                               |
				|-------------------------------|
				|          |                    |
				|-------------------------------|




				|-------------------------------|
				|          |                    |
				|-------------------------------|
				|                               |
	SWrouter		|                               |
				|                               |
				|                               |
				|                               |
				|-------------------------------|
				|          |                    |
				|-------------------------------|




				|-------------------------------|
				|          |                    |
				|-------------------------------|
				|                               |
	SWworkstation1		|                               |
				|                               |
				|                               |
				|                               |
				|                               |
				|                               |
				|-------------------------------|