MAC Address Table Management Commands
165
Use the
undo mac
-
address max
-
mac
-
count enable forward
command to
enable the switch to drop the packets whose source MAC addresses are not
learned by the port when the number of MAC addresses automatically learned by
the port reaches the threshold value.
Use the
mac
-
address max
-
mac
-
count enable alarm
command to enable the
switch to send alarms to the network administrator when the number of MAC
addresses automatically learned by the port reaches the threshold value.
Use the
undo mac
-
address max
-
mac
-
count enable alarm
command to remove
this configuration.
By default, the switch forwards the packets whose source MAC addresses are not
learned by the port when the number of MAC addresses automatically learned by
the port reaches the threshold value.
After the
mac
-
address max
-
mac
-
count
enable
{
alarm
|
forward
}
*
command
is executed, if the MAC addresses learned by a port reach the maximum number
of MAC addresses that the port can learned, the port will send an alarm to
network administrator to prompt that the port will no longer learn any MAC
addresses.
Related commands:
mac
-
address, mac
-
address timer
.
n
■
The maximum number of MAC addresses on an I/O Module ranges from 12 K
to 16 K depending on various software versions and module types.
■
The aforementioned number of MAC addresses includes only the MAC
addresses learned by the switch dynamically, and excludes those configured by
the user.
■
When executing the
mac-address max-mac-count
command, if the current
number of MAC addresses exceeds the threshold value, the switch neither
delete the present MAC address entries nor learn new MAC address until the
number of entries less than the threshold value after some entries are aged
out.
Example
# Set the maximum number of MAC addresses learned by Ethernet port
Ethernet3/1/3 to 600, and the switch will give an alarm to the network
administrator and forward the packets when the number of MAC addresses
learned exceeds 600.
<SW8800> system-view
System View: return to User View with Ctrl+Z.
[SW8800] interface Ethernet3/1/3
[3Com-Ethernet3/1/3] mac-address max-mac-count 600
[3Com-Ethernet3/1/3] mac-address max-mac-count enable forward alarm
# Set the maximum number of MAC addresses learned by Ethernet3/1/3 to 600.
When the number of MAC addresses exceeds this value, the switch drops the
packets whose MAC addresses are not learned by the port.
<SW8800> system-view
System View: return to User View with Ctrl+Z.
Summary of Contents for Switch 8807
Page 30: ......
Page 68: ...66 CHAPTER 2 COMMANDS USED TO LOG IN TO SWITCH ...
Page 78: ...76 CHAPTER 3 CONFIGURATION FILE MANAGEMENT COMMANDS ...
Page 96: ...94 CHAPTER 5 SUPER VLAN CONFIGURATION COMMANDS ...
Page 122: ...120 CHAPTER 8 IP PERFORMANCE CONFIGURATION COMMANDS ...
Page 130: ...128 CHAPTER 9 GARP GVRP CONFIGURATION COMMANDS ...
Page 162: ...160 CHAPTER 11 ETHERNET LINK AGGREGATION CONFIGURATION COMMANDS ...
Page 212: ...210 CHAPTER 13 MSTP CONFIGURATION COMMANDS ...
Page 234: ...232 CHAPTER 16 ACL COMMANDS ...
Page 282: ...280 CHAPTER 18 ACL CONTROL COMMANDS TO CONTROL LOGIN USERS ...
Page 293: ......
Page 294: ...292 CHAPTER 19 VLAN ACL CONFIGURATION COMMANDS ...
Page 310: ...308 CHAPTER 20 802 1X CONFIGURATION COMMANDS ...
Page 370: ...368 CHAPTER 21 AAA AND RADIUS HWTACACS PROTOCOL CONFIGURATION COMMANDS ...
Page 398: ...396 CHAPTER 23 STATIC ROUTE CONFIGURATION COMMANDS ...
Page 462: ...460 CHAPTER 25 OSPF CONFIGURATION COMMANDS ...
Page 498: ...496 CHAPTER 26 INTEGRATED IS IS CONFIGURATION COMMANDS ...
Page 548: ...546 CHAPTER 27 BGP CONFIGURATION COMMANDS ...
Page 570: ...568 CHAPTER 30 RECURSIVE ROUTING CONFIGURATION ...
Page 584: ...582 CHAPTER 32 MULTICAST VLAN CONFIGURATION COMMANDS ...
Page 600: ...598 CHAPTER 33 MULTICAST COMMON CONFIGURATION COMMANDS ...
Page 604: ...602 CHAPTER 34 STATIC MULTICAST MAC ADDRESS CONFIGURATION COMMAND ...
Page 656: ...654 CHAPTER 37 MSDP CONFIGURATION COMMANDS ...
Page 682: ...680 CHAPTER 38 MBGP MULTICAST EXTENSION CONFIGURATION COMMANDS ...
Page 762: ...760 CHAPTER 40 BGP MPLS VPN CONFIGURATION COMMANDS ...
Page 808: ...806 CHAPTER 44 HA CONFIGURATION COMMANDS_HA_CONFIGURATION ...
Page 820: ...818 CHAPTER 45 ARP CONFIGURATION COMMANDS ...
Page 824: ...822 CHAPTER 46 ARP TABLE SIZE CONFIGURATION COMMANDS max arp entry config of slot 13 8192 ...
Page 862: ...860 CHAPTER 47 DHCP CONFIGURATION COMMANDS ...
Page 870: ...868 CHAPTER 48 DNS CONFIGURATION COMMANDS ...
Page 972: ...970 CHAPTER 56 SSH TERMINAL SERVICE CONFIGURATION COMMANDS ...
Page 982: ...980 CHAPTER 57 FILE SYSTEM MANAGEMENT COMMANDS ...
Page 1026: ...1024 CHAPTER 60 INFORMATION CENTER ...
Page 1046: ...1044 CHAPTER 63 PORT PACKET STATISTICS COMMANDS ...
Page 1051: ...Ethernet Port Detection Configuration Commands 1049 ...
Page 1052: ...1050 CHAPTER 64 PORT LOOPBACK DETECTION COMMANDS ...
Page 1053: ...Ethernet Port Detection Configuration Commands 1051 ...
Page 1054: ...1052 CHAPTER 64 PORT LOOPBACK DETECTION COMMANDS ...
Page 1055: ......
Page 1056: ...1054 CHAPTER 64 PORT LOOPBACK DETECTION COMMANDS ...
Page 1057: ......
Page 1058: ...1056 CHAPTER 64 PORT LOOPBACK DETECTION COMMANDS ...
Page 1059: ...Ethernet Port Detection Configuration Commands 1057 ...
Page 1060: ...1058 CHAPTER 64 PORT LOOPBACK DETECTION COMMANDS ...
Page 1061: ......
Page 1062: ...1060 CHAPTER 64 PORT LOOPBACK DETECTION COMMANDS ...
Page 1063: ...Ethernet Port Detection Configuration Commands 1061 ...
Page 1064: ...1062 CHAPTER 64 PORT LOOPBACK DETECTION COMMANDS ...
Page 1065: ......
Page 1066: ...1064 CHAPTER 64 PORT LOOPBACK DETECTION COMMANDS ...
Page 1090: ...1088 CHAPTER 66 NQA CONFIGURATION COMMANDS ...