Cisco Systems WSC2960XR48FPSI Manuale Utente Scaricare il pdf (Pagina 144)

a switch in Customer X, Site 1, will build a spanning tree on the switches at that site without considering

convergence parameters based on Customer X’s switch in Site 2. This could result in the topology shown in

the Layer 2 Network Topology without Proper Convergence figure.

Figure 12: Layer 2 Protocol Tunneling

Figure 13: Layer 2 Network Topology Without Proper Convergence

In an SP network, you can use Layer 2 protocol tunneling to enhance the creation of EtherChannels by

emulating a point-to-point network topology. When you enable protocol tunneling (PAgP or LACP) on the

Catalyst 2960-XR Switch VLAN Configuration Guide, Cisco IOS Release 15.0(2)EX1

130 OL-29440-01

Configuring IEEE 802.1Q and Layer 2 Protocol Tunneling

Layer 2 Protocol Tunneling Overview

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Cisco Systems WSC2960XR48FPSI Manuale Utente Pagina 144