Chapter 75 VLAN Stacking and Translation
OLT2406 User’s Guide
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75.6 VLAN Stacking Commands
Use these commands to add an outer VLAN tag to the inner IEEE 802.1Q tagged frames that enter your
network.
75.7 VLAN Stacking Command Examples
In the following example figure, both A and B are Service Provider’s Network (SPN) customers with VPN
tunnels between their head offices and branch offices respectively. Both have an identical VLAN tag for
their VLAN group. The service provider can separate these two VLANs within its network by adding tag
37 to distinguish customer A and tag 48 to distinguish customer B at edge device x and then stripping
those tags at edge device y as the data frames leave the network.
Table 271 VLAN Stacking Commands
COMMAND DESCRIPTION M P
interface port-channel <aid>
Enters config-interface mode for the specified
port(s).
aid: <msc|ge|pon>-<slot>-<port>
C13
vlan-stacking priority <0-7>
Sets the priority of the specified port(s) in port-
based VLAN stacking.
C13
vlan-stacking role
<normal|access|tunnel>
Sets the VLAN stacking port roles of the specified
port(s).
normal: The OLT ignores frames received (Or
transmitted) on this port with VLAN stacking
tags.
access: the OLT adds the SP TPID tag to all
incoming frames received on this port.
tunnel: (Available for Gigabit and faster ports
only) for egress ports at the edge of the service
provider's network.
Note: In order to support VLAN stacking on
a port, the port must be able to
allow frames of 1526 Bytes (1522
Bytes + 4 Bytes for the second tag) to
pass through it.
C13
vlan-stacking SPVID <1-4094>
Sets the service provider VID of the specified
port(s).
C13
vlan-stacking tunnel-tpid
<tpid>
Sets a four-digit hexadecimal number from
0000 to FFFF that the OLT adds in the outer VLAN
tag of the outgoing frames sent on the tunnel
port(s).
C13
show vlan-stacking
Displays the VLAN stacking configuration. E 3
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