Cisco Catalyst 4500 Series - Page 884

30-14
Catalyst 4500 Series Switch, Cisco IOS Software Configuration Guide - Cisco IOS XE 3.9.xE and IOS 15.2(5)Ex
Chapter 30 Configuring 802.1Q Tunneling, VLAN Mapping, and Layer 2 Protocol Tunneling
About Layer 2 Protocol Tunneling
Figure 30-6 Layer 2 Protocol Tunneling
Figure 30-7 Layer 2 Network Topology without Proper Convergence
Customer A Site 2
VLANs 1 to 100
Customer B Site 2
VLANs 1 to 200
Customer B Site 1
VLANs 1 to 200
Customer A Site 1
VLANs 1 to 100
VLAN 30
Trunk
ports
Switch 1
Switch 1
Trunk
ports
VLAN 30
VLAN 40
Service
provider
74073
Trunk
Asymmetric link
VLAN 30
VLAN 40
Trunk
ports
Switch 2
Switch 3
Switch 4
Trunk
ports
74017
Customer A
virtual network
VLANs 1 to 100