In Pictures: 15 more useful Cisco sites

Another lineup in our continuing search for the most useful sites on the Web for Cisco users and practitioners.

Hacking Cisco: The title alone is enough to draw practitioners and casual observers into the site. Hacking Cisco is authored by Jarek Rek, a Cisco “trainer/researcher” in the telecommunications industry based in Dublin. The site is loaded with sample problems and solutions on OSPF neighboring, IPv6 topologies, BGP conditional route injections, RIPv2 broadcast updates, EIGRP filtering with extended ACLs, multicast PIM RPF failures, and establishing MPLS VPNs with a variety of routing protocols. So despite its title, Hacking Cisco might be more helpful than harmful to the network operator.

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