cmdref.net is command references/cheat sheets/examples for system engineers.
| Cloud |
|---|
| Etc |
|---|
| Reference |
|---|
Arp Table is the correspondence table of mac address and destination address port.
| Operation | Command | complement |
|---|---|---|
| Switch#show arp Switch#show ip arp Switch#show ip arp | include x.x.x.x Switch#show ip arp 192.168.0.10 |
switch# show ip arp Flags: D - Static Adjacencies attached to down interface IP ARP Table for context default Total number of entries: 1 Address Age MAC Address Interface 2.2.2.100 - 000a.000a.000a Ethernet1/2 switch#
switch# show ip arp detail IP ARP Table for context default Total number of entries: 1 Address Age MAC Address Interface Physical Interface 90.10.10.2 00:02:55 000d.ece7.df7c Vlan900 Ethernet1/12 switch#
| Operation | Command | complement |
|---|---|---|
| Clear Arp cache | Switch# clear arp-cache Switch#clear ip arp 192.168.0.10 | clear arp-cache = clear ip arp |
| Switch(config-if)#arp timeout 7200 ← 2 hours | Default : 14,400sec = 4 hours | |
| Switch(config)# arp 192.168.11.1 00-60-97-12-34-56 | ||
| Switch(config)# no arp 192.168.11.1 |
Mac address table is the correspondence table of mac address and IP address.
| Operation | Command | complement |
|---|---|---|
| view of ip and port address | Switch#show mac-address-table | |
| Switch#show mac address-table dynamic | ||
| view mac address table of mac address of your setting | Switch#show mac address-table static |
switch# show mac address-table
Legend:
* - primary entry, G - Gateway MAC, (R) - Routed MAC, O - Overlay MAC
age - seconds since last seen,+ - primary entry using vPC Peer-Link
VLAN MAC Address Type age Secure NTFY Ports
---------+-----------------+--------+---------+------+----+------------------
+ 100 0000.0001.0003 dynamic 0 F F Po1
+ 100 0000.0001.0004 dynamic 0 F F Po1
+ 100 0000.0001.0009 dynamic 0 F F Po1
+ 100 0000.0001.0010 dynamic 0 F F Po1
* 1 001d.7172.6c40 dynamic 300 F F Eth100/1/20
switch#
| Operation | Command | complement |
|---|---|---|
| Clear Mac address table | Switch# clear mac-address-table Switch# clear mac-address-table vlan 90 | |
| Switch(config)#mac address-table aging-time 300 | Default : 300sec = 5 minites |
Switch(config)#mac address-table static 0010.aaaa.aaaa vlan 1 interface fastethernet0/4
#ping 192.168.254.10 (1) Check Arp Table(Mac address from IP Address) #show arp | include 192.168.254.10 Internet 192.168.254.10 3 0000.1111.2222 ARPA Vlan100 (2) Check Mac address table (destination port of mac address) #show mac-address-table | include 0000.1111.2222 10 0000.1111.2222 DYNAMIC Fa0/3