- Book Title Page
- Wide-Area Networking Overview
- Configuring Frame Relay
- Frame Relay Queueing and Fragmentation at the Interface
- Frame Relay MIB Enhancements
- Frame Relay PVC Interface Priority Queueing
- ASR1K Frame Relay - Multilink (MLFR-FRF.16)
- Frame Relay show Command and debug Command Enhancements
- L2VPN Local Switching—Frame Relay-Ethernet/VLAN
- Finding Feature Information
- Restrictions for L2VPN Local Switching—Frame Relay-Ethernet/VLAN
- Information About L2VPN Local Switching—Frame Relay-Ethernet/VLAN
- How To Configure L2VPN Local Switching—Frame Relay-Ethernet/VLAN
- Configuration Examples for L2VPN Local Switching—Frame Relay-Ethernet/VLAN
- Additional References for L2VPN Local Switching—Frame Relay-Ethernet/VLAN
- Feature Information for L2VPN Local Switching—Frame Relay-Ethernet/VLAN
L2VPN Local Switching—Frame Relay-Ethernet/VLAN
L2VPN Local Switching—Frame Relay-Ethernet/VLAN feature allows you to switch Frame Relay and Ethernet frames between two interfaces on the same device.
- Finding Feature Information
- Restrictions for L2VPN Local Switching—Frame Relay-Ethernet/VLAN
- Information About L2VPN Local Switching—Frame Relay-Ethernet/VLAN
- How To Configure L2VPN Local Switching—Frame Relay-Ethernet/VLAN
- Configuration Examples for L2VPN Local Switching—Frame Relay-Ethernet/VLAN
- Additional References for L2VPN Local Switching—Frame Relay-Ethernet/VLAN
- Feature Information for L2VPN Local Switching—Frame Relay-Ethernet/VLAN
Finding Feature Information
Your software release may not support all the features documented in this module. For the latest caveats and feature information, see Bug Search Tool and the release notes for your platform and software release. To find information about the features documented in this module, and to see a list of the releases in which each feature is supported, see the feature information table.
Use Cisco Feature Navigator to find information about platform support and Cisco software image support. To access Cisco Feature Navigator, go to www.cisco.com/go/cfn. An account on Cisco.com is not required.
Restrictions for L2VPN Local Switching—Frame Relay-Ethernet/VLAN
The following functions are not supported:
Information About L2VPN Local Switching—Frame Relay-Ethernet/VLAN
- L2VPN Local Switching—Frame Relay-Ethernet/VLAN Overview
- Frame Relay to Ethernet Port-Bridged Interworking
- Frame Relay to Ethernet VLAN/QinQ–Bridged Interworking
L2VPN Local Switching—Frame Relay-Ethernet/VLAN Overview
The L2VPN Local Switching—Frame Relay-Ethernet/VLAN feature switches a Frame Relay frame to an Ethernet VLAN/QinQ frame over the same provider edge (PE) device. Only Ethernet (bridged) interworking mode is supported to switch packets between Frame Relay link and Ethernet VLAN/QinQ. In a bridged interworking mode, the MAC header is considered as the payload of Frame Relay frames.
The L2VPN Local Switching—Frame Relay-Ethernet/VLAN supports the following functions:
The Frame Relay-Ethernet bridge mode local switching in data-link connection identifier (DLCI) mode.
Port interface and subinterface Ethernet attachment circuit (AC) type with single tag or double tags (Q-in-Q).
Cisco and IETF Frame Relay encapsulation.
The Frame Relay-Ethernet local switching topology is illustrated in the figure below.
Frame Relay to Ethernet Port-Bridged Interworking
Frame Relay-Ethernet port-bridged interworking provides interoperability between a Frame Relay attachment virtual circuit (VC) and an Ethernet attachment VC connected to the same provider edge (PE) device. The bridged encapsulation is used that corresponds to the bridged (Ethernet) interworking mechanism.
Based on RFC 2427, Multiprotocol Interconnect over Frame Relay, the interworking is done at the PE connected to the Frame Relay attachment VC as shown in the figure below.
The processing of Frame Relay-Ethernet port local switching is described as follows:
Frame Relay to Ethernet VLAN/QinQ–Bridged Interworking
Frame Relay to Ethernet VLAN/QinQ bridged interworking provides interoperability between a Frame Relay attachment virtual circuit (VC) and an Ethernet VLAN attachment VC connected to the same provider edge (PE) device. The bridged encapsulation is used that corresponds to the bridged (Ethernet) interworking mechanism.
Based on RFC 2427, Multiprotocol Interconnect over Frame Relay, the interworking function is implemented on the PE connected to the Frame Relay attachment VC as shown in the figure below.
The process of Frame Relay to VLAN/QinQ bridged interworking is described as follows:
How To Configure L2VPN Local Switching—Frame Relay-Ethernet/VLAN
- Configuring Frame Relay-Ethernet Port-Bridged Interworking
- Configuring Frame Relay-Ethernet VLAN/QinQ Interworking
Configuring Frame Relay-Ethernet Port-Bridged Interworking
1.
enable
2.
configure terminal
3.
interface type number
4.
no ip
address
5.
exit
6.
interface
type
number
7.
encapsulation
frame-relay
8.
frame-relay
interface-dlci dlci switched
9.
exit
10.
connect
connection-name type number dlci interworking ethernet
11.
end
DETAILED STEPS
Configuring Frame Relay-Ethernet VLAN/QinQ Interworking
1.
enable
2.
configure terminal
3.
interface type
number
4.
encapsulation
dot1q vlan-id
second-dot1q second vlan-id
5.
exit
6.
interface type number
7.
encapsulation
frame-relay
8.
frame-relay
interface-dlci dlci switched
9.
exit
10.
connect
connection-name type number dlci interworking ethernet
11.
end
DETAILED STEPS
Configuration Examples for L2VPN Local Switching—Frame Relay-Ethernet/VLAN
- Example: Configuring Frame Relay-Ethernet Port Mode Bridged Interworking
- Example: Configuring Frame Relay-Ethernet VLAN 802.1Q Bridged Interworking
- Example: Configuring Frame Relay-VLAN QinQ Bridged Interworking
Example: Configuring Frame Relay-Ethernet Port Mode Bridged Interworking
The following example shows how to configure the Frame Relay-Ethernet port mode bridged interworking:
PE configuration:
interface GigabitEthernet0/0/1 no ip address end interface Serial0/1/2:0 no ip address encapsulation frame-relay no keepalive frame-relay interface-dlci 60 switched end connect FR-ETHQinQ Serial0/1/2:0 60 GigabitEthernet0/0/1 interworking ethernet
CE configuration:
Frame-Relay-CE
bridge irb bridge 16 protocol ieee bridge 16 route ip interface Serial2/0:0 no ip address encapsulation frame-relay IETF no keepalive interface Serial2/0:0.1 point-to-point frame-relay interface-dlci 60 bridge-group 60 interface BVI16 ip address 172.16.1.0 255.255.0.0
Ethernet-CE
interface GigabitEthernet0/0/1 ip address 172.16.2.1 255.255.0.0
Example: Configuring Frame Relay-Ethernet VLAN 802.1Q Bridged Interworking
The following example shows how to configure Frame Relay-Ethernet VLAN 802.1Q bridged interworking:
PE configuration:
interface GigabitEthernet0/0/1.10 encapsulation dot1Q 10 end interface Serial0/1/2:0 no ip address encapsulation frame-relay no keepalive frame-relay interface-dlci 58 switched end connect FR-ETH1Q Serial0/1/2:0 58 GigabitEthernet0/0/1.10 interworking EthernetCE configuration:
Frame Relay-CE
bridge irb bridge 16 protocol ieee bridge 16 route ip interface Serial2/0:0 no ip address encapsulation frame-relay IETF no keepalive interface Serial2/0:0.1 point-to-point frame-relay interface-dlci 58 bridge-group 16 interface BVI16 ip address 172.18.1.2 255.255.0.0Ethernet-CE
interface GigabitEthernet0/0/1.10 encapsulation dot1Q 10 ip address 172.17.2.1 255.255.0.0
Example: Configuring Frame Relay-VLAN QinQ Bridged Interworking
The following example shows how to configure Frame Relay-VLAN QinQ bridged interworking:
PE configuration:
interface GigabitEthernet0/0/1.11 encapsulation dot1Q 11 second-dot1q 100 end interface Serial0/1/2:0 no ip address encapsulation frame-relay no keepalive frame-relay interface-dlci 100 switched end connect FR-ETHQinQ Serial0/1/2:0 100 GigabitEthernet0/0/1.11 interworking ethernetCE configuration:
Frame-Relay-CE
bridge irb bridge 16 protocol ieee bridge 16 route ip interface Serial2/0:0 no ip address encapsulation frame-relay IETF no keepalive interface Serial2/0:0.1 point-to-point frame-relay interface-dlci 100 bridge-group 16 interface BVI16 ip address 172.18.1.3 255.255.0.0Ethernet-CE
interface GigabitEthernet0/0/1.10 encapsulation dot1Q 10 sec 10 ip address 172.19.1.1 255.255.0.0
Additional References for L2VPN Local Switching—Frame Relay-Ethernet/VLAN
Related Documents
Related Topic |
Document Title |
---|---|
Cisco IOS commands |
|
WAN commands |
RFCs
RFC |
Title |
---|---|
RFC 2427 |
Technical Assistance
Description |
Link |
---|---|
The Cisco Support website provides extensive online resources, including documentation and tools for troubleshooting and resolving technical issues with Cisco products and technologies. To receive security and technical information about your products, you can subscribe to various services, such as the Product Alert Tool (accessed from Field Notices), the Cisco Technical Services Newsletter, and Really Simple Syndication (RSS) Feeds. Access to most tools on the Cisco Support website requires a Cisco.com user ID and password. |
Feature Information for L2VPN Local Switching—Frame Relay-Ethernet/VLAN
The following table provides release information about the feature or features described in this module. This table lists only the software release that introduced support for a given feature in a given software release train. Unless noted otherwise, subsequent releases of that software release train also support that feature.
Use Cisco Feature Navigator to find information about platform support and Cisco software image support. To access Cisco Feature Navigator, go to . An account on Cisco.com is not required.
Feature Name |
Releases |
Feature Information |
---|---|---|
L2VPN Local Switching—Frame Relay-Ethernet/VLAN |
Cisco IOS XE Release 3.12S |
The L2VPN Local Switching—Frame Relay-Ethernet/VLAN feature allows you to switch Frame Relay and Ethernet frames between two interfaces on the same device. |