
Chapter 8
| General Security Measures
IPv6 Source Guard
– 312 –
ipv6 dhcp snooping (293)
ipv6 dhcp snooping vlan (298)
ipv6 source-guard
This command configures the switch to filter inbound traffic based on the source IP
address stored in the binding table. Use the
no
form to disable this function.
Syntax
ipv6 source-guard
sip
no ipv6 source-guard
Default Setting
Disabled
Command Mode
Interface Configuration (Ethernet)
Command Usage
◆
Source guard is used to filter traffic on an insecure port which receives
messages from outside the network or fire wall, and therefore may be subject
to traffic attacks caused by a host trying to use the IP address of a neighbor.
◆
This command checks the VLAN ID, IPv6 global unicast source IP address, and
port number against all entries in the binding table. Use the
no ipv6 source
guard
command to disable this function on the selected port.
◆
After IPv6 source guard is enabled on an interface, the switch initially blocks all
IPv6 traffic received on that interface, except for ND packets allowed by ND
snooping and DHCPv6 packets allowed by DHCPv6 snooping. A port access
control list (ACL) is applied to the interface. Traffic is then filtered based upon
dynamic entries learned via ND snooping or DHCPv6 snooping, or static
addresses configured in the source guard binding table. The port allows only
IPv6 traffic with a matching entry in the binding table and denies all other IPv6
traffic.
◆
Table entries include a MAC address, IPv6 global unicast address, lease time,
entry type (Static-IPv6-SG-Binding, Dynamic-ND-Snooping, Dynamic-DHCPv6-
Snooping), VLAN identifier, and port identifier.
◆
Static addresses entered in the source guard binding table with the
command are automatically configured with an infinite
lease time. Dynamic entries learned via DHCPv6 snooping are configured by
the DHCPv6 server itself.
◆
If IPv6 source guard is enabled, an inbound packet’s source IPv6 address will be
checked against the binding table. If no matching entry is found, the packet
will be dropped.
Содержание AS5700-54X
Страница 42: ...Contents 42...
Страница 44: ...Figures 44...
Страница 52: ...Tables 52...
Страница 54: ...Section I Getting Started 54...
Страница 80: ...Chapter 1 Initial Switch Configuration Setting the System Clock 80...
Страница 210: ...Chapter 6 Remote Monitoring Commands 210...
Страница 358: ...Chapter 9 Access Control Lists ACL Information 358...
Страница 418: ...Chapter 12 Port Mirroring Commands RSPAN Mirroring Commands 418...
Страница 436: ...Chapter 15 UniDirectional Link Detection Commands 436...
Страница 442: ...Chapter 16 Address Table Commands 442...
Страница 506: ...Chapter 18 VLAN Commands Configuring VXLAN Tunneling 506...
Страница 526: ...Chapter 19 Class of Service Commands Priority Commands Layer 3 and 4 526...
Страница 544: ...Chapter 20 Quality of Service Commands 544...
Страница 652: ...Chapter 22 Multicast Filtering Commands MLD Proxy Routing 652...
Страница 680: ...Chapter 23 LLDP Commands 680...
Страница 722: ...Chapter 24 CFM Commands Delay Measure Operations 722...
Страница 732: ...Chapter 25 Domain Name Service Commands 732...
Страница 790: ...Chapter 27 IP Interface Commands ND Snooping 790...
Страница 1072: ...Section III Appendices 1072...
Страница 1090: ...Glossary 1090 XModem A protocol used to transfer files between devices Data is grouped in 128 byte blocks and error corrected...
Страница 1102: ...List of CLI Commands 1102...
Страница 1115: ......
Страница 1116: ...AS5700 54X AS6700 32X E032016 ST R02 149100000198A...