Reference Guide

Command Modes INTERFACE TUNNEL (conf-if-tu)
Command History
This guide is platform-specific. For command information about other platforms, refer to the
relevant FTOS Command Line Reference Guide .
The following is a list of the FTOS version history for this command.
Version 9.2(0.2) Introduced on the Z9000, S4810, and S4820T.
Usage
Information
This command is only valid for tunnel interfaces with an IPv6 outer header.
tunnel hop-limit
Configure the method to set the IPv4 time-to-live or the IPv6 hop limit value in the outer tunnel header.
S4820T
Syntax
tunnel hop—limit value
To restore the default tunnel hop-limit, use the no tunnel hop—limit command.
Parameters
value Enter the hop limit (IPv6) or time-to-live (IPv4) to include in the tunnel
header. The range is from 0 to 255. The default is 64.
Defaults 64 (for IPv4 and IPv6)
Command Modes INTERFACE TUNNEL (conf-if-tu)
Command History
This guide is platform-specific. For command information about other platforms, refer to the
relevant FTOS Command Line Reference Guide .
The following is a list of the FTOS version history for this command.
Version 9.2(0.2) Introduced on the Z9000, S4810, and S4820T.
Usage
Information
A value of 0 copies the inner packet hop limit (IPv6) or time-to-live (IPv4) in the encapsulated
packet to the tunnel header hop limit value.
tunnel mode
Enable a tunnel interface.
S4820T
Syntax
tunnel mode {ipip | ipv6 | ipv6ip}
To disable an active tunnel interface, use the no tunnel mode command.
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