Siemens S223 - Manual (Page 165)

User Manual UMN:CLI
SURPASS hiD 6615 S223/S323 R1.5
A50010-Y3-C150-2-7619 165
Sample Configuration
The latest policy is recorded as number 1. The following is an example of permitting MAC
address 00:02:a5:74:9b:17 and 00:01:a7:70:01:d2 and showing table of filter policy.
SWITCH(bridge)# mac-filter add 00:02:a5:74:9b:17 permit
SWITCH(bridge)# mac-filter add 00:01:a7:70:01:d2 permit
SWITCH(bridge)# show mac-filter
=================================
ID | MAC | ACTION
=================================
1 00:01:a7:70:01:d2 PERMIT
2 00:02:a5:74:9b:17 PERMIT
SWITCH(bridge)#
The following is an example of displaying one configuration.
SWITCH(bridge)# show mac-filter 1
=================================
ID | MAC | ACTION
=================================
1 00:01:a7:70:01:d2 PERMIT
SWITCH(bridge)#
7.13 Address Resolution Protocol (ARP)
Device connected to IP network has two addresses, LAN address and network address.
LAN address is sometimes called as data link because it is used in Layer 2 level, but
more commonly the address is known as MAC address. Ethernet Switch needs 48-bit-
MAC address to transmit packets. In this case, the process of finding proper MAC ad-
dress from IP address is called as address resolution.
On the other hand, the progress of finding proper IP address from MAC address is called
as reverse address resolution. Siemens switches find MAC address from IP address
through address resolution protocol (ARP).
This chapter consists of these sections:
•
ARP Table
• ARP Alias
• Gratuitous ARP
• Proxy-ARP
7.13.1 ARP Table
Hosts typically have an ARP table, which is a cache of IP/MAC address mappings. The
ARP Table automatically maps the IP address to the MAC address of a switch. In addition
to address information, the table shows the age of the entry in the table, the encapsula-
tion method, and the switch interface (VLAN ID) where packets are forwarded.
The hiD 6615 ARP saves IP/MAC addresses mappings in ARP table for quick search. Re-
ferring to the information in ARP table, packets attached IP address is transmitted to net-
work. When configuring ARP table, it is possible to do it only in some specific interfaces.