Configuring SAVI globally
After SAVI is enabled, if a port is down for three minutes, the device deletes the DHCPv6 snooping entries and ND snooping entries corresponding to the port. As a result, validation for the packets received on the port is affected.
To configure SAVI globally:
Step | Command | Remarks |
|---|---|---|
1. Enter system view. | system-view | N/A |
2. Enable SAVI to check packet validity. | ipv6 savi strict | By default, SAVI is disabled. |
3. Set the time to wait for a duplicate address detection (DAD) NA. | ipv6 savi dad-delay value | Optional. One second by default. If no DAD NA is received within the specified time when the corresponding ND snooping entry is in detect state, the ND snooping entry changes to bound state. |
4. Set the time to wait for a DAD NS from a DHCPv6 client. | ipv6 savi dad-preparedelay value | Optional. One second by default. This command is used with the DHCPv6 snooping function. After DHCPv6 snooping detects that a client obtains an IPv6 address, it monitors whether the client detects IP address conflict. If DHCPv6 snooping does not receive any DAD NS from the client before the set time expires, SAVI sends a DAD NS on behalf of the client. |