CANOGA PERKINS CanogaOS Configuration Guide - Manual (Page 83)

CanogaOS Configuration Guide
Proprietary & Confidential Canoga Perkins Metro Ethernet Switches Page 83 of 350
Switchport mode : dot1q-tunnel(selective)
VLAN mapping table : vm
Ingress filter : enable
Acceptable frame types : all
Default Vlan : 2
Configured Vlans : 10
10.1.4 Tag native vlan Configuration
DUT1#configure terminal Enter the Configure mode.
DUT1(config)# vlan dot1q tag native Enable tag native vlan
10.1.5 Understanding 802.1q tunneling
Customers at different sites connected across a service-provider network need to run various
Layer 2 protocols to scale their topology to include all remote sites, as well as the local sites.
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.
When protocol tunneling is enabled, edge switches on the inbound side of the service-provider
infrastructure encapsulate Layer 2 protocol packets with a special MAC address and send them
across the service-provider network. Core switches in the network do not process these packets
but forward them as normal packets. Layer 2 protocol data units (PDUs) for STP cross the
service-provider infrastructure and are delivered to customer switches on the outbound side of
the service-provider network.
Layer 2 protocol tunneling can be used independently or can enhance 802.1Q tunneling. If
protocol tunneling is not enabled on 802.1Q tunneling ports, remote switches at the receiving end
of the service-provider network do not receive the PDUs and cannot properly run STP. When
protocol tunneling is enabled, Layer 2 protocols within each customer’s network are totally
separate from those running within the service-provider network. Customer switches on different
sites that send traffic through the service-provider network with 802.1Q tunneling achieve
complete knowledge of the customer’s VLAN. If 802.1Q tunneling is not used, you can still
enable Layer 2 protocol tunneling by connecting to the customer switch through access ports or
trunk ports and enabling tunneling on the service-provider access or trunk port.
10.1.6 Layer2 protocol tunneling Configuration
DUT1#configure terminal Enter the Configure mode.
DUT1(config)# l2protocol-tunnel enable Enable l2protocol tunnel globally
DUT1(config)# l2protocol-tunnel tunnel-dmac
010F.E200.0003 Configure layer2 protocol tunnel destination mac address. By
default, layer2 protocol tunnel dmac is 0100.0CCD.CDD0.