H3C Technologies H3C S12500-X Series Switches - Manual (Page 152)

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Step Command Remarks
5. (Optional.) Specify a service
card for forwarding the
traffic on the tunnel interface
(in IRF mode).
service chassis chassis-number
slot slot-number By default, no IRF member device or
service card is specified.
6. Set the MTU of the tunnel
interface.
mtu mtu-size
The default MTU is 64000 bytes.
Set an appropriate MTU to avoid
fragmentation. The MTU for the
tunnel interface applies only to
unicast packets.
An MTU set on any tunnel interface is
effective on all existing tunnel
interfaces.
7. Set the expected bandwidth
for the tunnel interface.
bandwidth bandwidth-value
By default, the expected bandwidth is
64 kbps.
The expected bandwidth for the
tunnel interface affects the link cost
value. For more information, see
Layer 3—IP Routing Configuration
Guide.
8. Set the ToS for tunneled
packets.
tunnel tos tos-value
The default setting is the same as the
ToS of the original packet.
9. Set the TTL for tunneled
packets.
tunnel ttl ttl-value
The default TTL for tunneled packets is
255.
10. (Optional.) Restore the
default settings of the tunnel
interface.
default N/A
11. (Optional.) Shut down the
tunnel interface.
shutdown
By default, the tunnel interface is
enabled.
Configuring an IPv6 over IPv4 manual tunnel
Follow these guidelines when you configure an IPv6 over IPv4 manual tunnel:
• The tunnel destination address specified on the local device must be identical with the tunnel source
address specified on the tunnel peer device.
• Do not specify the same tunnel source and destination addresses for the tunnels in the same mode
on a device.
• If the destination IPv6 network is not in the same subnet as the IPv6 address of the tunnel interface,
you must configure a static route destined for the destination IPv6 network. You can specify the local
tunnel interface as the egress interface or specify the IPv6 address of the peer tunnel interface as the
next hop. Alternatively, you can enable a dynamic routing protocol on both tunnel interfaces to
achieve the same purpose. For detailed configuration, see Layer 3—IP Routing Configuration
Guide.
To configure an IPv6 over IPv4 manual tunnel: