Different Types of Switch Ports

com Access Ports belong to and carry the traffic of only one VLAN Trunk Ports carry the traffic of multiple VLANs and by default is a member of all VLANs in the VLAN database. Both ISL and 802.1Q trunk ports are supported Tunnel Ports designed for service providers who carry traffic of multiple customers across their networks and are required to maintain the VLAN and Layer 2 protocol configurations of each customer without impacting the traffic of other customers. Both 802.1Q tunneling and...

Layer 2 Protocol Tunneling

Cisco Switch Virtual Interfaces Svi

2002, Cisco Systems, VLANSsI to 200 2002, Cisco Systems, VLANSsI to 200 Customers that have different sites connected across a service-provider network and want to scale this topology into one large layer 2 domain need to run various Layer 2 protocols between sites. For example, STP must run properly, and every VLAN should build a proper spanning tree that includes the local site and all remote sites across the service-provider infrastructure. Cisco Discovery Protocol (CDP) must discover...

External Route Summarization

R4(config-router) summary-address 192.168.0.0 255.255.0.0 2002, Cisco Systems, Inc. All lights reserved. To configure manual route summarization on an ASBR to summarize external routes, use the summary-address command. This command instructs the ASBR to summarize external routes before injecting them into the OSPF domain. Table 6-17 < summary-address > Command Table 6-17 < summary-address > Command Summary address designated for a range of external routes. Performed in router...