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DGS-3120 Series Layer 3 Managed Gigabit Ethernet Switch CLI Reference Guide
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configured. The 32 bits following the initial 2002::/16 prefix correspond to an IPv4 address
assigned to the tunnel source.
<ipv6networkaddr> - Enter the IPv6 address used here.
source - (Optional) Specify the IPv4 source address for a packet sent to the remote end of the
6to4 tunnel. The IPv4 destination address for the packet is derived from the IPv6 destination
address of the remote destination, which is in the format of a 6to4 address. The address is
derived by extracting the 4-octets immediately following the IPv6 destination address's
2002::/16 prefix. For example, a 6to4 address, 2002:c0a8:0001::/48 will be extracted to
192.168.0.1. Any IPv6 address that begins with the 2002::/16 prefix is known as a 6to4
address
<ipaddr> - Enter the IPv4 source address used here.
Restrictions
Only Administrator, Operator and Power-User level users can issue this command.
Example
To configure an IPv6 6to4 tunnel (Tunnel name is “tn2”, Tunnel source IPv4 address is 10.0.0.1,
Tunnel IPv6 address is 2002:a00:1::1/64):
DGS-3120-24TC:admin#config ip_tunnel 6to4 tn2 ipv6address 2002:A00:1::1/64
source 10.0.0.1
Command: config ip_tunnel 6to4 tn2 ipv6address 2002:A00:1::1/64 source 10.0.0.1
Success.
46-5 config ip_tunnel isatap
Description
This command is used to configure an existing IPv6 tunnel as an IPv6 ISATAP tunnel on the
switch. If this tunnel has previously been configured in another mode, the tunnel’s information will
still exist in the database. However, whether the tunnel’s former information is valid or not will
depend on the current mode. IPv6 ISATAP tunnels are point-to-multipoint tunnels that can be used
to connect systems within a site. An IPv6 ISATAP address is a well-defined unicast address that
includes a 64-bit unicast IPv6 prefix (it can be either link-local or global prefixes), a 32-bit value
0000:5EFE/0200:5EFE and a 32-bit tunnel source IPv4 address.
Format
config ip_tunnel isatap <tunnel_name 12> {ipv6address <ipv6networkaddr> | source
<ipaddr>}(1)
Parameters
<tunnel_name 12> - Enter the IP tunnel interface name used here. This name can be up to 12
characters long.
ipv6address - (Optional) Specify the IPv6 address assigned to this IPv6 tunnel interface. IPv6
processing will be enabled on the IPv6 tunnel interface when an IPv6 address is configured.
The last 32 bits of the IPv6 ISATAP address correspond to an IPv4 address assigned to the
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