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Configuring the IPv4SG feature
You cannot configure the IPv4SG feature on a service loopback interface. If IPv4SG is enabled on an
interface, you cannot assign the interface to a service loopback group.
Enabling IPv4SG on an interface
When you enable IPSG on an interface, the static and dynamic IPSG are both enabled.
•
Static IPv4SG uses static bindings configured by using the
ip source binding
command.
•
Dynamic IPv4SG generates dynamic bindings from related source modules. It uses the
bindings to filter incoming IPv4 packets based on the matching criteria specified in the
ip verify
source
command.
To implement dynamic IPv4SG, make sure the DHCP snooping or DHCP relay feature operates
correctly on the network.
To enable the IPv4SG feature on an interface:
Step Command
Remarks
1.
Enter system view.
system-view
N/A
2.
Enter interface view.
interface
interface-type
interface-number
The following interface types are
supported: Layer 2 Ethernet port, Layer 3
Ethernet interface, VLAN interface, and
Layer 3 aggregate interface.
3.
Enable the IPv4SG
feature.
ip verify source
{
ip-address
|
ip-address
mac-address
|
mac-address
}
By default, this IPv4SG feature is disabled
on an interface.
If you configure this command on an
interface multiple times, the most recent
configuration takes effect.
Configuring a static IPv4SG binding
You can configure global static and interface-specific static IPv4SG bindings.
Global static bindings take effect on all interfaces.
Interface-specific static bindings take priority over global static bindings. An interface first uses the
static bindings on the interface to match packets. If no match is found, the interface uses the global
bindings.
Configuring a global static IPv4SG binding
Step Command
Remarks
1.
Enter system view.
system-view
N/A
2.
Configure a global static
IPv4SG binding.
ip
source
binding ip-address
ip-address
mac-address
mac-address
No global static IPv4SG binding
exists.
Configuring a static IPv4SG binding on an interface
Step Command Remarks
1.
Enter system view.
system-view
N/A
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