CCNA

1. © 2007 Cisco Systems, Inc. All rights reserved. ICND2 v1.0—2-1
Module Summary
 When expanding a company network, VLANs, VTP, and trunking
provide a switched network infrastructure with segmentation,
flexibility, and security.
 The STP and its successor RSTP resolve bridging loops that are
an inherent part of redundant switched networks.
 One way to do inter-VLAN routing is to configure a “router on a
stick” using subinterfaces and 802.1Q trunking.
 Troubleshooting a switched network requires knowing the
characteristics of the underlying protocols, such as VTP,
PVRST+, and 802.1Q.

2. © 2007 Cisco Systems, Inc. All rights reserved. ICND2 v1.0—2-2