Installation manual

4-250
SIGNAMAX LLC • www.signamax.eu
Example
The following example shows how to display information for VLAN 1:
Configuring IEEE 802.1Q Tunneling
IEEE 802.1Q tunneling (QinQ tunneling) uses a single Service Provider VLAN (SPVLAN)
for customers who have multiple VLANs. Customer VLAN IDs are preserved and traffic
from different customers is segregated within the service provider’s network even when
they use the same customer-specific VLAN IDs. QinQ tunneling expands VLAN space by
using a VLAN-in-VLAN hierarchy, preserving the customer’s original tagged packets, and
adding SPVLAN tags to each frame (also called double tagging).
This section describes commands used to configure QinQ tunneling.
General Configuration Guidelines for QinQ
1. Configure the switch to QinQ mode (dot1q-tunnel system-tunnel-control,
page 4-251).
2. Create a SPVLAN (vlan, page 4-242).
3. Configure the QinQ tunnel access port to dot1Q-tunnel access mode (switchport
dot1q-tunnel mode, page 4-252).
4. Set the Tag Protocol Identifier (TPID) value of the tunnel access port. This step is
required if the attached client is using a nonstandard 2-byte ethertype to identify
Console#show vlan id 1
Default VLAN ID : 1
VLAN ID: 1
Type: Static
Name: DefaultVlan
Status: Active
Ports/Port Channels: Eth1/ 1(S) Eth1/ 2(S) Eth1/ 3(S) Eth1/ 4(S) Eth1/ 5(S)
Eth1/ 6(S) Eth1/ 7(S) Eth1/ 8(S) Eth1/ 9(S) Eth1/10(S)
Eth1/11(S) Eth1/12(S) Eth1/13(S) Eth1/14(S) Eth1/15(S)
Eth1/16(S) Eth1/17(S) Eth1/18(S) Eth1/19(S) Eth1/20(S)
Eth1/21(S) Eth1/22(S) Eth1/23(S) Eth1/24(S) Eth1/25(S)
Eth1/26(S) Eth1/27(S) Eth1/28(S)
Console#
Table 4-69 IEEE 802.1Q Tunneling Commands
Command Function Mode Page
dot1q-tunnel
system-tunnel-control
Configures the switch to operate in normal mode or QinQ
mode
GC 4-251
switchport dot1q-tunnel
mode
Configures an interface as a QinQ tunnel port IC 4-252
switchport dot1q-tunnel tpid Sets the Tag Protocol Identifier (TPID) value of a tunnel port IC 4-253
show dot1q-tunnel Displays the configuration of QinQ tunnel ports PE 4-253
show interfaces switchport Displays port QinQ operational status PE 4-197