
C
HAPTER
25
| General Security Measures
IPv6 Source Guard
– 945 –
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.
S
YNTAX
ipv6 source-guard
sip
no ipv6 source-guard
D
EFAULT
S
ETTING
Disabled
C
OMMAND
M
ODE
Interface Configuration (Ethernet)
C
OMMAND
U
SAGE
◆
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, entry
type (Static-IPv6-SG-Binding, Dynamic-ND-Binding, Dynamic-DHCPv6-
Binding), 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.
◆
Filtering rules are implemented as follows:
■
If ND snooping and DHCPv6 snooping are disabled, IPv6 source
guard will check the VLAN ID, source IPv6 address, and port
number. If a matching entry is found in the binding table and the
Содержание ECS4110-28T
Страница 1: ...Management Guide www edge core com ECS4110 28T 28P 52T 52P 28 52 Port Gigabit Ethernet Layer 2 Switch...
Страница 2: ......
Страница 4: ......
Страница 63: ...FIGURES 63 Figure 428 Configuring VLAN Translation 1177...
Страница 64: ...FIGURES 64...
Страница 72: ...TABLES 72...
Страница 74: ...SECTION I Getting Started 74...
Страница 102: ...SECTION II Web Configuration 102 General IP Routing on page 679...
Страница 154: ...CHAPTER 4 Basic Management Tasks Resetting the System 154...
Страница 198: ...CHAPTER 5 Interface Configuration VLAN Trunking 198 Figure 65 Configuring VLAN Trunking...
Страница 272: ...CHAPTER 9 Congestion Control Automatic Traffic Control 272...
Страница 286: ...CHAPTER 10 Class of Service Layer 3 4 Priority Settings 286...
Страница 420: ...CHAPTER 13 Security Measures DHCP Snooping 420...
Страница 566: ...CHAPTER 14 Basic Administration Protocols OAM Configuration 566...
Страница 638: ...CHAPTER 15 Multicast Filtering Multicast VLAN Registration for IPv6 638...
Страница 662: ...CHAPTER 16 IP Configuration Setting the Switch s IP Address IP Version 6 662...
Страница 678: ...CHAPTER 17 IP Services Configuring the PPPoE Intermediate Agent 678...
Страница 792: ...CHAPTER 21 System Management Commands Switch Clustering 792...
Страница 822: ...CHAPTER 23 Remote Monitoring Commands 822...
Страница 888: ...CHAPTER 24 Authentication Commands PPPoE Intermediate Agent 888...
Страница 968: ...CHAPTER 25 General Security Measures Port based Traffic Segmentation 968...
Страница 994: ...CHAPTER 26 Access Control Lists ACL Information 994...
Страница 1034: ...CHAPTER 28 Link Aggregation Commands Trunk Status Display Commands 1034...
Страница 1044: ...CHAPTER 29 Power over Ethernet Commands 1044...
Страница 1084: ...CHAPTER 33 UniDirectional Link Detection Commands 1084...
Страница 1090: ...CHAPTER 34 Address Table Commands 1090...
Страница 1194: ...CHAPTER 37 VLAN Commands Configuring Voice VLANs 1194...
Страница 1388: ...CHAPTER 42 CFM Commands Delay Measure Operations 1388...
Страница 1410: ...CHAPTER 44 Domain Name Service Commands 1410...
Страница 1420: ...CHAPTER 45 DHCP Commands DHCP Relay 1420...
Страница 1472: ...CHAPTER 46 IP Routing Commands IPv4 Commands 1472...
Страница 1474: ...SECTION IV Appendices 1474...
Страница 1502: ...COMMAND LIST 1502...
Страница 1513: ......
Страница 1514: ...ECS4110 28T ECS4110 28P ECS4110 52T ECS4110 52P E072014 ST R02 150200000929A...