R21xx-HP FlexFabric 11900 Layer 3 IP Services Configuration Guide
179
Ste
p
Command
Remarks
4. Set the MTU of the tunnel
interface.
mtu mtu-size
By default, the MTU is 64000 bytes.
Set an appropriate MTU to avoid
fragmentation. The MTU for the
tunnel interface applies to only
unicast packets.
An MTU set on any tunnel interface is
effective on all existing tunnel
interfaces.
5. Set the bandwidth for the
tunnel interface.
tunnel bandwidth
bandwidth-value
The default setting is 64 kbps.
This command sets a bandwidth for
dynamical routing protocols to
calculate the cost of the tunnel and
does not affect the actual interface
bandwidth. You can set the value
according to the bandwidth of the
egress interface.
6. Set the ToS for tunneled
packets.
tunnel tos tos-value
The default setting is the same as the
ToS of the original packet.
7. Set the TTL for tunneled
packets.
tunnel ttl ttl-value
The default TTL for tunneled packets is
255.
8. (Optional.) Restore the
default settings of the tunnel
interface.
default N/A
9. (Optional.) Shut down the
tunnel interface.
shutdown
By default, a tunnel interface is in UP
state.
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.
• The tunnels in the same mode on a device must not use the same tunnel source and destination
addresses.
• 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:
Ste
p
Command
Remarks
1. Enter system view.
system-view N/A