146
3-17-2. DHCP Snooping Entry
Function name:
DHCP Snooping Entry
Function description:
DHCP snooping Entry allows a switch to add the an trust DHCP server and 2
trust port to build the DHCP snooping available entry. This information can be
useful in tracking an IP address back to a physical port and enable or disable
the DHCP Option 82.
Fig. 3-17-1 DHCP Snooping State
Parameter description:
VID
：
When DHCP snooping is enabled, and enabled on the specified
VLAN, DHCP packet filtering will be performed on any un-trusted
ports within the VLAN. It set a available VLAN ID to enable the DHCP
snooping on VLAN interface.
Trust Port 1
：
If DHCP snooping is enabled globally, and also enabled on
the VLAN where the DHCP packet is received, all DHCP packets are
forwarded for a trusted por. It set a trust port 1. available port from 0
to 24. 0 is disabled.
Trust port 2 :
It set a trust port 2. available port from 0 to 24. 0 is disabled.
Trust VID
：
It set a trust VLAN ID. available VID from 1 to 4094.
Server IP
：
It set a trust DHCP Server IP address for DHCP Snooping.
Option 82
：
It set the DHCP Option 82 function on the switch, default is
Disable.
Action
：
It set the switch when received a client DHCP request packet then
action for filtering. available action : keep/ drop / replace.
Note
：
Filtering rules are implemented as follows:
-
If the DHCP snooping is disabled, all DHCP packets are forwarded.
-
If DHCP snooping is enabled and also enabled on the VLAN where
the DHCP packet is received, all DHCP packets are forwarded for a
trusted port.
-
If DHCP snooping is enabled and also enabled on the VLAN where
the DHCP packet is received, but the port is not trusted, it is
Summary of Contents for L2 Plus
Page 1: ......
Page 2: ......
Page 3: ...16 Port SFP 8 Port Combo GbE L2 Plus Managed Switch...
Page 4: ...2...
Page 36: ...34 Fig 2 15 Office Network Connection Fig 2 14 Peer to peer Network Connection...
Page 56: ......
Page 78: ...22 Fig 3 24...
Page 81: ...25 Fig 3 26...
Page 88: ...32 Fig 3 31...
Page 96: ...40 Fig 3 39 Fig 3 40 Fig 3 41...
Page 112: ...56 Fig 3 62 Set up VLAN Tag Priority Mapping Finish...
Page 119: ...63 Fig 3 67 Ingress Port Fig 3 68...
Page 121: ...65 Fig 3 70...
Page 122: ...66 Fig 3 71 Fig 3 72 Fig 3 73 ARP...
Page 123: ...67 Fig 3 74 ARP Fig 3 75 ARP Fig 3 76 ARP Fig 3 77 ARP...
Page 124: ...68 Fig 3 78 ARP Fig 3 79 ARP Fig 3 80 ARP Fig 3 81 ARP...
Page 125: ...69 Fig 3 82 ARP Fig 3 83 ARP Fig 3 84 ARP Fig 3 85 ARP Fig 3 86 ARP...
Page 126: ...70 Fig 3 87 IPv4 Fig 3 88 IPv4 Fig 3 89 IPv4...
Page 127: ...71 Fig 3 90 IPv4 Fig 3 91 IPv4 Fig 3 92 IPv4 Fig 3 93 IPv4 Fig 3 94 IPv4...
Page 128: ...72 Fig 3 95 IPv4 Fig 3 96 IPv4 Fig 3 97 IPv4 Fig 3 98 IPv4 Fig 3 99 IPv4...
Page 129: ...73 Fig 3 100 IPv4 Fig 3 101 IPv4 Fig 3 102 IPv4...
Page 130: ...74 Fig 3 103 IPv4 Fig 3 104 IPv4 Fig 3 105 IPv4...
Page 131: ...75 Fig 3 106 IPv4 Fig 3 107 IPv4 Fig 3 108 IPv4...
Page 132: ...76 Fig 3 109 IPv4 Fig 3 110 IPv4 Fig 3 111 IPv4...
Page 133: ...77 Fig 3 112 IPv4 Fig 3 113 IPv4 Fig 3 114 IPv4...
Page 134: ...78 Fig 3 115 IPv4 Fig 3 116 IPv4 Fig 3 117 Action...
Page 135: ...79 Fig 3 118 Rate Limiter Fig 3 119 Port Copy...
Page 136: ...80 Fig 3 120 DMAC Filter Fig 3 121 VLAN ID Filter Fig 3 122 VLAN ID Filter...
Page 148: ...92 Fig 3 125 Set up Policy Rules Fig 3 126 Set up Policy Rules Fig 3 127 Set up Policy Rules...
Page 150: ...94 Fig 3 131 Set up Port Policies Fig 3 132 Set up Port Policies Finish...
Page 164: ...108 Fig 3 143 802 1X Server Configuration...
Page 168: ...112 Fig 3 145 802 1X Status...
Page 194: ...138 Fig 3 161 Mirror Configuration...
Page 214: ...158 Fig 4 1 Fig 4 2 LGB1005A R2 LGB1005A R2 LGB1005A R2 LGB1005A R2...
