13
Views
System view
Layer 2 Ethernet interface view
Layer 2 aggregate interface view
VLAN view
Predefined user roles
network-admin
Usage guidelines
To prevent the MAC address table from becoming saturated, you can disable MAC address learning.
For example, a number of packets with different source MAC addresses reaching a device can affect
the MAC address table update. To avoid such attacks, you can disable MAC address learning by
following these guidelines:
•
You can disable MAC address learning on a per-interface basis. If you disable MAC address
learning globally, MAC address learning is disabled for all interfaces. The device then stops
learning MAC addresses and cannot dynamically update the MAC address table.
•
Because disabling MAC address learning can result in broadcast storms, enable broadcast
storm suppression after you disable MAC address learning on an interface. For more
information about broadcast storm suppression, see
Interface Configuration Guide
.
•
With MAC address learning enabled globally, you can disable MAC address learning for an
interface or VLAN.
•
After MAC address learning is disabled, the device immediately deletes existing dynamic MAC
address entries.
Examples
# Disable MAC address learning globally.
<Sysname> system-view
[Sysname] undo mac-address mac-learning enable
# Disable MAC address learning for VLAN 10.
<Sysname> system-view
[Sysname] vlan 10
[Sysname-vlan10] undo mac-address mac-learning enable
# Disable MAC address learning on GigabitEthernet 1/0/1.
<Sysname> system-view
[Sysname] interface gigabitethernet 1/0/1
[Sysname-GigabitEthernet1/0/1] undo mac-address mac-learning enable
# Disable MAC address learning on Bridge-Aggregation 1.
<Sysname> system-view
[Sysname] interface bridge-aggregation 1
[Sysname-Bridge-Aggregation1] undo mac-address mac-learning enable
Related commands
display mac-address mac-learning
mac-address mac-move fast-update
Use
mac-address mac-move fast-update
to enable ARP fast update for MAC address
moves.
Summary of Contents for SOHO IE4300
Page 285: ...i Contents Tcl commands 1 cli 1 tclquit 1 tclsh 2...
Page 288: ...i Contents Python commands 1 exit 1 python 1 python filename 2...
Page 291: ...i Contents Automatic configuration commands 1 autodeploy udisk enable 1...
Page 323: ...25 Sysname Ten GigabitEthernet1 0 51 undo shutdown Related commands irf port...
Page 465: ...ii stp vlan enable 55 vlan mapping modulo 55...
Page 602: ...12 Related commands display mvrp statistics...
Page 609: ...i Contents VLAN mapping commands 1 display vlan mapping 1 vlan mapping 2...
Page 678: ...9 Related commands reset pppoe relay statistics...
Page 846: ...i Contents Basic IP forwarding commands 1 display fib 1 ip forwarding table save 2...
Page 1770: ...i Contents Time range commands 1 display time range 1 time range 1...
Page 2026: ...34 Related commands display mac authentication...
Page 2028: ...ii...
Page 2143: ...i Contents User profile commands 1 display user profile 1 user profile 2...
Page 2308: ...61 ipsec transform set...
Page 2531: ...i Contents SAVI commands 1 ipv6 savi down delay 1 ipv6 savi log enable 1 ipv6 savi strict 2...
Page 2534: ...3 Sysname ipv6 savi strict Related commands ipv6 verify source...
Page 2791: ...14 Sysname track 1 Related commands delay display track...
Page 2939: ...9 sntp authentication keyid sntp reliable authentication keyid...
Page 2967: ...27 Related commands apply poe profile poe enable poe max power interface view poe priority...