Time
3 hours 35 minutes
Difficulty
Intermediate
CEU/CPE
4

Video Transcription

00:00
Hello there and welcome to this Cisco CC and be switched 101 15 Exam prep course
00:06
On In this video, we're gonna focus on monitor and mark address tables.
00:10
The switch. He uses the Mac address table
00:13
to make intelligent decisions when it's forward in traffic
00:17
between ports.
00:19
Now inside, it was switch. A mark address is usually bond the airport. However, this is not always the case, because sometimes a user can unplug the race. I'm porking a switch
00:31
on creaky Plug it into another. Report on the switch would display the mark address on different ports. Eventually, the switch would each other Mac address,
00:42
depending on the season timer
00:44
that is set up for the market rate stable. Sometimes you may hear the term cam table
00:50
when you're working with Cisco Switches.
00:53
Camp stands for content, addressable memory.
00:56
It come is what actually does the work of populating the market rest tables
01:00
on providing fast lookups entries inside of a mark address. Stable can be one of two types. They can be either dynamic,
01:08
our study
01:11
dynamic being whenever device is either plug or unplugged
01:15
till pork
01:17
and static
01:19
is the kiss. When you would manually buying a Mac address
01:23
support inside of a villain. Now where we want to work with a Mac address table, there are a number of different features. We can work with every one of you the table we can use. The show Mac Address table command from IDA user exact mood or privileged exact mood appointed note. Most of the show Kamins can be executed
01:44
in user exact mood. However, when you want to make any changes, we need to execute those changes. We need to be in privilege exact mode and then go into global configuration. Load, for example, the TOR adoption
01:57
in order to change the mock address table Asian timer.
02:00
We would use the Mac space address hyphen, table stays, agent hyphen timer. Come on
02:07
on, then we would specially high value every specified value. Zero,
02:12
and it's gonna disable the Mac address agent time or feature on your mark. Address entries would not be each out of the market dressed Abel by default. The Mac address table agent timer is 300 seconds or five minutes.
02:25
You can use the show mark address stable space agent hyphen timer Common to confirm the current settings for the agent timer,
02:35
everyone a search for a particular mark address. Within the switch, we can use the show mark address. Stable
02:42
space address. Hollowed
02:45
made a market just
02:46
off a particular device. Do not know. Mac address format is in Hexi decimal
02:53
on It's separated by appearance. A supposed Hello Mac addresses displayed. For example, in the Windows computer,
03:00
you would see the Mac address even separated my Poland's. However, in the Cisco device, you see the mark address being separated. My periods here, a couple of slides back we mentioned about a Mac address can be either economic or static.
03:16
If we want to configure a static mark address within our switch,
03:22
we would say Mark address table
03:25
No, the hyphen between a dressing table all by a space than with a static space.
03:31
And we'll specify the mark address and hex the vestibule. Former
03:35
separated by periods. Following this, we would use the keyword villain.
03:39
Then we're specifying the villain 80 which this mark addresses gonna be associated with.
03:46
And finally, we're going to specify the port.
03:49
So we just Mac address is gonna be associated with this last option is if we want of you the total number of mark address entries we have within our switch.
03:58
We can use the show. Mac address tables. Case on. Come on.
04:01
I'm gonna bring up a lab now
04:02
so we can see how these commands were.
04:05
Authorities have brought a bag a lob on savory. We're gonna check the force. Come on. We're gonna very fight. Court Mac Address. Stable. Wonderful. Here we can see
04:15
a number of entries on the former, As we mentioned earlier on the slave,
04:19
it's separated by periods on. There's a fight column under tight. It sees whether the Mark address has been dynamically learned
04:27
are it has been statically a sign.
04:30
And this is here. These entries are internal to the switch. But every school along a bit,
04:35
we can see some dynamic entries at the bottom. Have we want to look at the current age in time for the Mac address table?
04:43
We can use the commander show Mark, Address table Legion timer on here. We can see that the current timer is set in 300 seconds. Let's say we want to change this agent time
04:53
so the entries can ease out much faster. And I'm gonna save Mark address stable. He's in timer.
05:00
We have no options here.
05:01
Specify the monk of time. In seconds, I had mentioned that we can disable the agent timer in the switch. I, specifying a zero on entries, would never each other. But in this case, we're going to specify a small number.
05:15
No way we got this era.
05:17
That's due to the fact that we cannot go under 10 seconds. So if we look at the second option here, it saves some 10 honking up. The only time we can specify a value on the 10 is if you want to disable the kids in time that we would use zero,
05:32
said Anarchists.
05:34
We're going to see it then when you were on the show, my progress table agent time. Come on. We can see that now. Agent timer has been set for 10 seconds globally,
05:46
so we can either specified is in time. A globally are. We can specify the agent time for a specific villain. In our case, we just specified the value tend to this age and time, as we said globally for all villains.
05:59
Now we want to configure a static Mac address.
06:03
We'll use the common Mac address stable space static on. We'll specify the Mac address now. We need to specify the villain on its last option, we would specify in the fierce notice and also drop traffic for a specific
06:17
mark address if he used option drop. But in our case, we're just gonna see into fees on we're going to say gigabit 101 on Really dente arterial new show Mark address table. Come on.
06:30
When we look productive mark address, I'll use the key words static and did not find it. Let's specify the value for the Mac address are used to a village It Ah, there we go.
06:40
Now we can see
06:42
you have a stop the country and say they were Mark address people.
06:45
Let's go back to the slights.
06:47
Break nowhere. Back in the slaves, we have a post assessment question.
06:51
What is the minimum value? The age of Mark Injuries in the mark Table a zero
06:58
be one R C. Then
07:00
nonserious See again in today's lecture,
07:03
we work with the market dress table. First we look at the wrist Folkman's,
07:09
which we can use to expose dearest. My country's also we work for the market dressed Abel agent timers were very fight. It's settings on every made, our own changes for the agent time and a nice video.
07:23
Well, look at the steps and how we would set up ever disable recovery and how we would troubleshooting pay insurance stable recovery.
07:29
Is that a properly in our switch? This is Phillip. Mention Ali and I wanna thank you for choosing savory.

Up Next

CCNP Switch - 300-115

This course is engineered to prepare you for your CISCO Certified Network Professional CCNP Switch 300 - 115. In this course, we will cover all the main domains present in the current version of the CCNP Exam which are centered around infrastructure security and services and layer 2 technologies.

Instructed By

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Philip Inshanally
Network Administrator
Instructor