SNR S2940-8G-v2, Configuration Manual

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SNR S2940-8G-v2 Switch Configuration Guide
SAVI Configuration
select the corresponding scene according to the actual requirement; in double stacks network,
while SAVI function associates with IPv4 DHCP snooping to use, IPv4 and IPv6 source address
authentication is implemented.
Client 2
E1/0/2
E1/0/1
Switch 2
Client 1
Switch 1
E1/0/13
E1/0/12
Switch 3
Figure 57.1: Typical network topology application for SAVI function
Client_1 and Client_2 means two different user's PC installed IPv6 protocol, respectively con-
nect with port Ethernet1/0/12 of Switch1 and port Ethernet1/0/13 of Switch2, and enable the source
address check function of SAVI. Ethernet1/0/1 and Ethernet1/0/2 are uplink ports of Switch1 and
Switch2 respectively, enable DHCP trust and ND trust functions. Aggregation Switch3 enables
DHCPv6 server function and route advertisement function.
Configuration steps of SAVI DHCP-SLAAC scene:
Switch1(config)#savi enable
Switch1(config)#savi ipv6 dhcp-slaac enable
Switch1(config)#savi check binding probe mode
Switch1(config)#interface ethernet1/0/1
Switch1(config-if-ethernet1/0/1)#ipv6 dhcp snooping trust
Switch1(config-if-ethernet1/0/1)#ipv6 nd snooping trust
Switch1(config-if-ethernet1/0/1)#exit
Switch1(config)#interface ethernet1/0/12-20
Switch1(config-if-port-range)#savi ipv6 check source ip-address mac-address
Switch1(config-if-port-range)#savi ipv6 binding num 4
Switch1(config-if-port-range)#exit
Switch1(config)#exit
57.4 SAVI Troubleshooting
After ensure no problem about SAVI client hardware and cable, please check the status which
may exist and the propositional solutions in the following:
• If IPv6 packets are filtered incorrectly after enable SAVI function, please ensure the global
SAVI function enabled. After that, enable the global function of the corresponding SAVI
scene according to the actual application scene and enable the port authentication function.
• If client can not correctly obtain IPv6 address assigned by DHCPv6 server after enable SAVI
function, please ensure DHCP port trust is configured by uplink port with DHCPv6 server.
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