As mentioned previously, L2/L3 switches now dominate the LAN. Routers
work with switches in a complementary manner to provide WAN access. Switches
hand off traffic to routers at the network edge to access the Internet or send
information across a WAN. The network edge is the demarcation between the
company LAN and the WAN, or between a teleworker’s home LAN and the WAN.
When employees send e-mails or access the web, they are typically sending their
messages and information requests locally using switches and across the Internet
via a number of routers.
Access Routing Adoption Decision Criteria
Like their switching ...
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