ARP Update

What will cause a switch to update its ARP table? Specifically, will Spanning Tree Protocol cause an update when blocking on a port reaches its time limit?
dfm2218Asked:
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
Normally you would have to force update the arp cache on the switch, or the MAC address would naturally expire, if it had not seen it for a while.

arping, in some Unix and Linux distros can be used to do, this by broadcasting the IP address.
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howard_chan33Commented:
What will cause a switch to update its ARP table?
When the switch need to know the mac of IP address. For example,
When you access the switch via console port and issue ping command, if the switch does not have the destination arp record, it will issue arp request and send to broadcast.
But there is another case, if issue ping from PC to the switch, then I am not sure will the switch store PC's mac into arp table.

I guess you want to mac address table rather then arp table but they are similar. The only difference is that mac address table in switch is frequency use but arp table in switch are used for management only.

Specifically, will Spanning Tree Protocol cause an update when blocking on a port reaches its time limit?
Only BPDU can pass through blocking port.
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dfm2218Author Commented:
Thanks for the response, howard chan33 ‘s answer is closer to what I am looking for.

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