Cisco Systems A9014CFD manual Configuring Ieee 802.1Q Tunneling using EFPs, 802.1Q Tunneling QinQ

Chapter 8 Configuring Ethernet Virtual Connections

Configuring Other Features on EFPs

Vlan	Mac Address	Type	Ports
----	-----------	--------	-----
10	0000.0700.0a00	DYNAMIC	Gi0/9
10	0000.0700.0b00	DYNAMIC	Gi0/1

Total Mac Addresses for this criterion: 2

Following is an example for show mac-address-table interface g0/9 command which displays only the addresses learned on a particular VLAN/BD interface.

Router# show mac-address-table interface 0/9

Mac Address Table

-------------------------------------------

Vlan	Mac Address	Type	Ports
----	-----------	--------	-----
10	0000.0700.0a00	DYNAMIC	Gi0/9

Total Mac Addresses for this criterion: 1

Following is an example for show mac-address-table interface port-channelcommand which displays only the addresses learned on a particular port-channel interface.

Router# show mac-address-table interface port-channel 1

Mac Address Table

-------------------------------------------

Vlan	Mac Address	Type	Ports
----	-----------	--------	-----
10	0000.0700.0b00	DYNAMIC	Po1

Total Mac Addresses for this criterion: 1

Configuring IEEE 802.1Q Tunneling using EFPs

Tunneling is a feature used by service providers whose networks carry traffic of multiple customers and who are required to maintain the VLAN and Layer 2 protocol configurations of each customer without impacting the traffic of other customers. The Cisco ASR 901 router uses EFPs to support QinQ and Layer 2 protocol tunneling.

This section contains the following topics:

•802.1Q Tunneling (QinQ), page 8-20

•Routed QinQ, page 8-23

802.1Q Tunneling (QinQ)

Service provider customers often have specific requirements for VLAN IDs and the number of VLANs to be supported. The VLAN ranges required by different customers in the same service-provider network might overlap, and traffic of customers through the infrastructure might be mixed. Assigning a unique range of VLAN IDs to each customer would restrict customer configurations and could easily exceed the VLAN limit (4096) of the 802.1Q specification.

Using the EVCs, service providers can encapsulate packets that enter the service-provider network with multiple customer VLAN IDs (C-VLANs) and a single 0x8100 Ethertype VLAN tag with a service provider VLAN (S-VLAN). Within the service provider network, packets are switched based on the S-VLAN. When the packets egress the service provider network onto the customer network, the S-VLAN tag is decapsulated and the original customer packet is restored.

	Cisco ASR 901 Series Aggregation Services Router Software Configuration Guide
8-20	OL-23826-09