Need to Know More?

Parkhurst, William R. Cisco OSPF Command and Configuration Handbook . Indianapolis, IN: Cisco Press, 2002. ISBN 1587050714.

Thomas, Tom. OSPF Network Design Solutions , Second Edition . Indianapolis, IN: Cisco Press, 2003. ISBN 1587050323.

Complete list of Requests for Comments: www.cis.ohio-state.edu/htbin/rfc/rfc-index.html.