4 clear mac-address-table dynamic, 3 typical configuration example, 4 troubleshooting – Amer Networks SS2R48G4i V2 User Manual

Page 92: 1 monitor and debug command, 1 show mac-address-table, 4 troubleshooting 8.4.1 monitor and debug command

Advertising
background image

SS2R24G4i/SS2R48G4i

81

Command Mode

Global mode

Default

no filtering entries

8.2.4 clear mac-address-table dynamic

Command clear mac-address-table dynamic [address <hw_addr>] [vlan <vid>] [interface

{[ethernet|port-channel] <Interfacename>}]

Function

Deletes dynamic address entries

Parameter <mac-addr>

MAC address to be deleted; <interface-name> name of the port

transmitting the MAC data packet; <vlan-id> receives vlan number of the MAC data packet.

Command Mode

Admin mode

Default

None

8.3 Typical Configuration Example

Scenario

Four PCs as shown in the above figure connect to port 5, 7, 9, 11 of switch, all the four

PCs belong to the default VLAN1. As required by the network environment, dynamic learning is enabled.
PC1 holds sensitive data and can not be accessed by any other PC that is in another physical segment;
PC2 and PC3 have static mapping set to port 7 and port 9, respectively.

The configuration steps are listed below


1. Set the MAC address 00-01-11-11-11-11 of PC1 as a filter address.
Switch(Config)#mac-address-table blackhole address 00-01-11-11-11-11 vlan 1
2.Set the static mapping relationship for PC2 and PC3 to port 7 and port 9, respectively.
Switch(Config)#mac-address-table static address 00-01-22-22-22-22 vlan 1 interface ethernet 0/0/7
Switch(Config)#mac-address-table static address 00-01-33-33-33-33 vlan 1 interface ethernet 0/0/9

8.4 Troubleshooting

8.4.1 Monitor and Debug Command

8.4.1.1 show mac-address-table

Command

show mac-address-table [static|aging-time|blackhole|count] [address <mac-addr>]

[vlan <vlan-id>] [interface <interface-name>]

Parameter static

entry; aging-time address aging time; blackhole filtering entry; count address

counter; <mac-addr> entry’s MAC address; <vlan-id> entry’s VLAN number; <interface-name>
entry’s interface name

Command mode

Admin mode

Default

MAC address table is not displayed by default.

Advertising