Digisol DG-GS4826S Management Manual page 1162

C 47 | IP Interface Commands
HAPTER
IPv6 to IPv4 Tunnels
show ipv6 tunnel
S
YNTAX
tunnel ttl ttl-value
no tunnel ttl
ttl-value - The TTL value of the IPv4 encapsulating packet.
(Range: 0-255, where zero means that the TTL value is taken from
the Hop Limit set in the IP header of the encapsulated IPv6 packet)
D S
EFAULT ETTING
0
C M
OMMAND ODE
Interface Configuration (IPv6/v4 Tunnel)
C U
OMMAND SAGE
The command sets the hop limit for the IPv4 encapsulating packet.
However, note that IPv6 over IPv4 tunnels are modeled as a "single-hop."
That is, the IPv6 hop limit is decremented by only one when an IPv6 packet
traverses the tunnel. The single-hop model serves to hide the existence of
a tunnel. The tunnel is opaque to users of the network, and is not
detectable by network diagnostic tools such as traceroute.
E
XAMPLE
Console(config)#interface tunnel 2
Console(config-if)#tunnel ttl 5
Console(config-if)#
This command displays the status and configuration settings for all IPv6
over IPv4 tunnels.
C M
OMMAND ODE
Privileged Exec
E
XAMPLE
Console#show ipv6 tunnel
Tunnel:1
Tunnel Current State
Tunnel Source Address
Tunnel Destination Address
Time to Live
Tunnel Mode (Configured / 6-to-4 / ISATAP) : Configured
Console#
The following example shows the interface status of the configured
tunnels.
– 1162 –
: Up
: [VLAN1]192.168.0.3
: 192.168.0.2
: 255