#Cisco mac address timeout switch port how to
#Cisco mac address timeout switch port mac

#Cisco mac address timeout switch port mac

I ended up lowering ARP to 4 minutes and keeping MAC at 5 minutes. I figure it's either something that was a knee-jerk reaction to some incident that no one remembers or it's just a problem that happens on very huge networks and I haven't been exposed to it. I think I understand the intent, but I just don't know WHY. Is this an issue you guys have come across? I've never even heard of such a thing. All layer 2 switches and layer 3 switches in the network (except an ALL Nexus in the data center) are required to have CAM table timers set to 14410 seconds. The overall goal is to avoid an unknown unicast flooding condition caused by the lack of MAC address entry. This parameter must be increased to 14410 seconds so the L2 switch MAC address table timer purges the MAC address entry ten seconds after the directly attached routers purge their corresponding IP ARP entries.

Layer 2 switches have a MAC address table timeout or CAM aging timer which Cisco sets for 300 seconds by default. I'm working in a large data center environment and while reviewing their standards docs, I found this: Rule #6: Homework / Educational Questions must display effort. Rule #3: No BlogSpam / Traffic re-direction. Rule #2: No Certification Brain Dumps / Cheating. r/NetworkingJobs /r/sysadmin /r/ITCareerQuestions /r/CSCareerQuestions /r/ccna /r/juniper /r/jncia /r/ccnp /r/jncis /r/ccdp /r/jncip /r/ccie /r/ccde /r/cisco /r/jncie /r/HomeNetworking /r/TechSupport /r/Network /r/ipv6 /r/networkautomation /r/outages Related IRC Channels Topics that may affect one locale does not contribute enterprise networking discussions.Political posts tend to attract the wrong crowd and overly aggressive vocalization.This subreddit invites redditors from all around the globe to discuss enterprise networking.Show us how you think you should solve those issues, and we will validate or offer enhancement to your initial attempt.Don't ask us what we would buy for a given project./r/itcareerquestions /r/ccna and /r/ccent are all available for early-career discussions.This sub-reddit is dedicated to higher-level, more senior networking topics.

#Cisco mac address timeout switch port how to

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