Reference Guide

VLAN Stacking | 1461
vlan-stack protocol-type
c e s
Define the Stackable VLAN Tag Protocol Identifier (TPID) for the outer VLAN tag (also called the
VMAN tag). If you do not configure this command, FTOS assigns the value 0x9100.
Syntax
vlan-stack protocol-type number
Parameters
Defaults
0x9100
Command Modes
CONFIGURATION
Command
History
Usage
Information
See the FTOS Configuration Guide for specific interoperability limitations regarding the S-Tag TPID.
On E-Series TeraScale, the two characters you enter in the CLI for number become the MSB, as
shown in Table 61-1.
On E-Series ExaScale, C-Series, and S-Series, four characters you enter in the CLI for number are
interpreted as follows:
number
Enter the hexadecimal number as the Stackable VLAN tag.
On the E-Series: FTOS accepts the Most Significant Byte (MSB) and then appends zeros for
the Least Significant Byte (LSB).
On the C-Series and S-Series: You may specify both bytes of the 2-byte S-Tag TPID.
E-Series Range: 0-FF
C-Series and S-Series Range: 0-FFFF
Default: 9100
Version 8.2.1.0 Introduced on the E-Series ExaScale. C-Series and S-Series accept both bytes of the
2-byte S-Tag TPID.
Version 8.2.1.0 Introduced on the E-Series ExaScale
Version 7.6.1.0 Support added for C-Series and S-Series
E-Series original Command
Table 61-1. Configuring a TPID on the E-Series TeraScale
number
Resulting TPID
1 0x0100
10 0x1000
More than two characters. Configuration rejected.
Table 61-2. Configuring a TPID on the E-Series ExaScale, C-Series
and S-Series
number
Resulting TPID
1 0x0001
10 0x0010
81 0x0081
8100 0x8100