D-Link DES-3828 Product Manual - Page 324

xStack DES-3800 Series Layer 3 Stackable Fast Ethernet Managed Switch CLI Manual

46

IP-MAC

B

INDING

C

OMMANDS

The IP network layer uses a four-byte address. The Ethernet link layer uses a six-byte MAC address. Binding these two address types

together allows the transmission of data between the layers. The primary purpose of IP-MAC binding is to restrict the access to a

switch to a number of authorized users. Only the authorized client can access the Switch’s port by checking the pair of IP-MAC

addresses with the pre-configured database. If an unauthorized user tries to access an IP-MAC binding enabled port, the system will

block the access by dropping its packet. The maximum number of IP-MAC binding entries is dependant on chip capability (e.g. the

ARP table size) and storage size of the device. For the DES-3800 series, the maximum number of IP-MAC Binding entries is 512.

The creation of authorized users can be manually configured by CLI or Web. The function is port-based, meaning a user can enable or

disable the function on the individual port.

ACL Mode

Due to some special cases that have arisen with the IP-MAC binding, this Switch has been equipped with a special ACL Mode for

IP-MAC Binding, which should alleviate this problem for users. When enabled, the Switch will create two entries in the Access

Profile Table. The entries may only be created if there are at least two Profile IDs available on the Switch. If not, when the ACL

Mode is enabled, an error message will be prompted to the user. When the ACL Mode is enabled, the Switch will only accept packets

from a created entry in the IP-MAC Binding Setting window. All others will be discarded.

To configure the ACL mode, the user must first create an IP-MAC binding using the

create address_binding ip_mac ipaddress

command and select the mode as

acl.

Then the user must enable the mode by entering the

enable address_binding acl_mode

command. If an IP-MAC binding entry is created and the user wishes to change it to an ACL mode entry, the user may use the

config

address_binding ip_mac ipaddress

command and select the mode as

acl

.

NOTE:

When configuring the ACL mode for the IP-MAC binding function, please pay close

attention to previously set ACL entries. Since the ACL mode entries will fill the first two

available access profiles and access profile IDs denoting the ACL priority, the ACL mode

entries may take precedence over other configured ACL entries. This may render some user-

defined ACL parameters inoperable due to the overlap of some settings combined with the

ACL entry priority (defined by profile ID). For more information on ACL settings, please see

“Configuring the Access Profile” section mentioned previously in this chapter.

NOTE:

Once ACL profiles have been created by the Switch through the IP-MAC binding

function, the user cannot modify, delete or add ACL rules to these ACL mode access profile

entries. Any attempt to modify, delete or add ACL rules will result in a configuration error as

seen in the previous figure.

NOTE:

When downloading configuration files to the Switch, be aware of the ACL

configurations loaded, as compared to the ACL mode access profile entries set by this

function, which may cause both access profile types to experience problems.

The IP-MAC Binding commands in the Command Line Interface (CLI) are listed (along with the appropriate parameters) in the

following table.

320

Section	Page
INTRODUCTION	5
Using the Console CLI	7
Command Syntax	11
Basic Switch Commands	13
Switch Port Commands	31
SNMP V3	35
PoE Commands	49
Network Management Commands	54
Switch Utility Commands	62
Network Monitoring Commands	73
Layer 2 FDB Commands	86
Packet Storm Control Commands	94
QoS Commands	98
Mirror Configuration Commands	106
VLAN Commands	109
Link Aggregation Commands	123
IGMP Snooping Commands	127
802.1X Commands (Including Guest VLANs)	135
Access Control List (ACL) Commands	148
Traffic Segmentation Commands	168
Command List History	170
Basic IP Commands (For Layer 3)	173
ARP Commands	178
Routing Table Commands	182
Route Redistribution Commands	185
RIP Commands	191
IGMP Commands	195
Auto Config Commands V3	199
DNS Relay Commands	201
DVMRP Commands	205
IP Multicasting Commands	210
MD5 Commands	213
OSPF Configuration Commands	215
Time and SNTP Commands	232
Port Security Commands	238
MAC Notification Commands	242
SSH Commands	246
Jumbo Frame Commands	254
Access Authentication Control Commands	256
D-Link Single IP Management Commands	279
Multiple Spanning Tree Protocol (MSTP) Commands	289
SSL Commands	301
VRRP Commands	307
System Severity	316
DHCP Relay	318
IP-MAC Binding Commands	324
LACP Configuration Commands	338
CPU Interface Filtering (Software ACL) Commands	340
Modify Prompt and Banner Commands	348
Safeguard Engine	351
WRED Command List	353
Web-based Access Control (WAC) Commands	357
Double VLAN Command List	363
Limited Multicast IP Address Commands	368
Route Preference Commands	373
MAC-Based Access Control Commands	376
PIM Commands	385
Loopback Interface Commands	402
DHCP Server Command List	405
MLD Snooping Commands	421
Loopback Detection Commands	428
Password Recovery Commands	433
Multicast VLAN Commands	436
CPU Filtering Commands List	439
Broadcast Segmentation Commands	441
Technical Specifications	443

D-Link DES-3828 Product Manual - Page 324

IP-MAC Binding Commands, create address_binding ip_mac ipaddress, enable address_binding acl_mode

Page 324 highlights