SNMP Configuration and Verification

Welcome to Jeremy’s IT Lab. This is a free, complete course for the CCNA. If you like these videos, please subscribe to follow along with the series. Also, please like and leave a comment, and share the video to help spread this free series of videos. Thanks for your help. Also, remember to sign up via the link in the description to get all of the lab files for this course, so you can try it out yourself in packet tracer. If you want more labs like these, I highly recommend picking up Boson’s NetSim for the CCNA, click the link in the video description to check it out. It’s a network simulator like packet tracer, but it’s even better, and it includes all of these guided labs to not only help you get hands-on practice configuring and troubleshooting, but also deepen your understanding of the exam topics. I used it myself when studying for my certifications, so I feel confident about recommending it to all of you. If you want to get your own copy of NetSim, please follow the link in the video description. In this lab we’ll configure SNMP, Simple Network Management Protocol. As I write at the top of the lab instructions, SNMP functionality is very limited in packet tracer, so unfortunately all we can do is enter a couple commands and then check out a few things on PC1, the NMS. I was hoping to clarify some more things about SNMP configuration since I only briefly skimmed over it in the lecture video, but we won’t be able to do that. But that’s okay, you don’t actually need to know about SNMP configuration for the CCNA exam so don’t worry about it. Okay let’s do step 1 and configure read-only and read/write communities on R1. ENABLE. CONF T. SNMP-SERVER, and I’ll use the question mark here. COMMUNITY, that’s the only available command. No HOST command, so we can’t even specify a server to send traps to. All we can do is configure communities here, and then try a few things out on the NMS. So, let’s configure those communities. COMMUNITY Cisco1 RO, that’s the read-only string. And then COMMUNITY Cisco2 RW, the read/write string. Okay, that’s all we can do. Now I’ll go on PC1. Click on Desktop, then MIB Browser. This let’s us view the different variables, the OIDs, in the MIB of R1. So, up here enter R1’s IP address, 192.168.1.254. However that’s not all. Click on advanced, and then enter those two communities we just configured. Cisco1 for the Read community, and Cisco2 for the Write community. I’ll leave it at SNMPv1, I’m not sure if other versions would work in Packet Tracer. Okay, now let’s explore some OIDs. First, how long has R1 been running, what’s the system uptime? Open the MIB Tree here, router_std MIBs, iso, org, dod, internet, mgmt, mib-2, system, and then here we can select ‘sysUpTime’. Then, look at the top right. Notice the Get operation is already selected, so I’ll just click on GO. And here, you can see the OID, and the value for that OID, this is the current uptime of R1, how long it has been turned on. Let’s check another one, the sysName variable will tell us R1’s hostname, which as you already know is R1. Okay let’s check out some information about R1’s interfaces. From ‘interfaces’, select ‘ifNumber’, and then send the Get. The value is 4, so R1 has 4 interfaces. Now I’ll expand ‘ifTable’ here, and ‘ifEntry’. Let’s click on ‘ifDescr’, and send a Get. Now you can see a description of each interface. It has a Vlan1 interface, and three gigabit ethernet interfaces, 0/0, 0/1, and 0/2. How about the ‘ifType’ OID? Send a Get, and you can see the interface type. So, these gigabitethernet interfaces are copper, not fiber-optic, interfaces. How about, ‘ifAdminStatus’? Send a Get, and you can see that only this interface, which is G0/0, is up, because it is enabled and connected to SW1. So, there are some other things we could check but I’ll leave it there. Now in step 3 let’s use a Set message to change a value on R1. I’ll do a Get once more for the system name. Next, change the operation type to Set. First, we have to select the data type, what kind of data is the host name? It is displayed here, ‘OctetString’. So, select OctetString here. Then enter a new value. You can change it to whatever you like, I’ll just change it to R11. Hit OK, then click GO to send the Set. As you can see, the value has been changed to R11. Now if I return to the CLI of the router, and hit enter, you can see the hostname has changed to R11. Let’s check the running config. DO SHOW RUN | INCLUDE HOST. So, it has been changed in the config, also. Okay, so that was a brief look at SNMP in Packet Tracer. There’s not much you can do with SNMP in packet tracer, but that’s okay since you don’t actually need to know the configurations for the CCNA exam. Next let’s take a look at a practice lab in Boson Software’s NetSim for CCNA. Okay here's today's Boson NetSim practice lab. As I've said before, SNMP configuration is not on the CCNA exam topics list. So there isn't an SNMP configuration lab in Boson NetSim for CCNA. There are plenty of labs for the IP services section of the exam, but not for SNMP because it's not on the exam topics list. So, for today's demonstration I will take a lab from NetSim for ENCOR 350-401. This is the core exam of the CCNP Enterprise certification. And they have a practice lab down here in the security section, configuring network device management. And that is this lab here. So this lab involves configuring VLANs, which you know, SNMP which you know a little bite, and then TACACS, which is AAA. That is something I will talk about in the security section of my course. Okay, so these are the SNMP commands you need to know. SNMP-SERVER CONTACT, COMMUNITY, HOST, and LOCATION. So these are commands I already covered. So you should be able to do this lab, even though you're not at the CCNP level yet. Or at least do the SNMP portion, not the TACACS portion. Okay, so let's get on it. I already did task 1 beforehand, which is configuring the management VLAN, because I want to get straight to task 2, which is configure and verify SNMP on Router1. And you can see what I did in task 1. So, I added another subinterface here on Router1 with an IP address. Created VLAN99 on these two switches and gave them IP addresses. Okay, so let's configure and verify SNMP on Router1. Okay, configure SNMP version 2 for read-only access using the community string Boson. Okay, so the command for all of these is SNMP-SERVER, or it begins like that. And the community is Boson. And it should be read-only. Now, we don't specify version 2 yet, we specify that in the SNMP-SERVER HOST command I believe. So that should be correct. Okay then the contact address, SNMP-SERVER CONACT [email protected]. Okay then the location, SNMP-SERVER LOCATION R1_SNMP. And then I have to configure PC1 to be the trap receiver, so that means the NMS, network management station. And to use a community string of snmp_logs. Okay, we haven't configured that community string yet, but alright let's see. SNMP-SERVER HOST 10.10.0.2. We're supposed to use version 2, so...okay looks like they do not suport that command. snmp_logs is the community. And that's it. Yeah, okay. So on Router1 verify that SNMP is enabled for the correct community string. So let's use some other show commands here. SHOW SNMP, and look we can view all of those things we just configured. SNMP COMMUNITY. There it is, community name boson and it is read-only. And this looks like it is a default string, I did not configure that. Let me see if that's in the configuration. INCLUDE COMMUNITY. No it is not in the configuration, so this looks like a default community string. Okay, the location. SHOW SNMP LOCATION. Okay, that is correct. SHOW SNMP CONTACT. [email protected], okay. Verify that SNMP is enabled for the trap receiver with the correct community string. SHOW SNMP HOST. Okay, there it is, 10.10.0.2, PC1. Notice UDP port 162, that is the port that the NMS uses to receive SNMP messages. Traps are enabled by default. User, this is the community. And it says security model version 1, so this might not be working exactly as intended. Let me check. So I have not finished this lab of course, there's still a lot to configure. But I will use the grade lab function to see if I configured this SNMP portion correctly. Grade lab. Okay and let's check out Router1's configuration. Okay, so this is the, this is part of the AAA configuration. TACACS, that's also AAA. And here this login authentication aaa_authentication. But looks like the SNMP configuration is correct. Here it is. Okay, so that is this short SNMP practice lab. And we can also check out Boson's lab solutions down here. They have good explanations. Let me see...here. Configure and verify SNMP on Router1. So basically it just shows the commands you have to use with some sample output of the show commands. Okay, so that's a quick look at SNMP, simple network management protocol, configuration in Boson NetSim. Once again, this is not part of the CCNA exam topics list. So you don't really have to worry about remembering these SNMP commands yet. But once you do go on to your CCNP studies, if you do, you'll definitely need to know them. Okay, so if you want to get a copy of Boson NetSim for CCNA, please follow the link in the video description. Before finishing today’s video I want to thank my JCNP-level channel members. To join, please click the ‘Join’ button under the video. Thank you to H W, Brandon, Samil, Aaron, Tech Alameda, Marcel, Magrathea, Kone, Donald, C Mohd, Gustavo, Anthony, Biraj, Junhong, Benjamin, Tshepiso, Justin, Prakaash, Nasir, Erlison, Apogee, Marko, Daming, Jhilmar, Ed, Value, John, Funnydart, Velvijaykum, Mark, Yousif, Boson Software, Devin, Lito, Yonatan, and Vance. Sorry if I pronounced your name incorrectly, but thank you so much for your support. This is the list of JCNP-level members at the time of recording by the way, February 8th 2021. If you signed up recently and your name isn’t on here don’t worry, you’ll be in future videos. Thank you for watching. Please subscribe to the channel, like the video, leave a comment, and share the video with anyone else studying for the CCNA. If you want to leave a tip, check the links in the description. I'm also a Brave verified publisher and accept BAT, or Basic Attention Token, tips via the Brave browser. That's all for now.

Welcome to Jeremy’s IT Lab. This is a free, complete course for the CCNA. If you like these videos, please subscribe to follow along with the series. Also, please like and leave a comment, and share the video to help spread this free series of videos. Thanks for your help. Also, remember to sign up via the link in the description to get all of the lab files for this course, so you can try it out yourself in packet tracer. If you want more labs like these, I highly recommend picking up Boson’s NetSim for the CCNA, click the link in the video description to check it out. It’s a network simulator like packet tracer, but it’s even better, and it includes all of these guided labs to not only help you get hands-on practice configuring and troubleshooting, but also deepen your understanding of the exam topics. I used it myself when studying for my certifications, so I feel confident about recommending it to all of you. If you want to get your own copy of NetSim, please follow the link in the video description. In this lab we’ll configure SNMP, Simple Network Management Protocol. As I write at the top of the lab instructions, SNMP functionality is very limited in packet tracer, so unfortunately all we can do is enter a couple commands and then check out a few things on PC1, the NMS. I was hoping to clarify some more things about SNMP configuration since I only briefly skimmed over it in the lecture video, but we won’t be able to do that. But that’s okay, you don’t actually need to know about SNMP configuration for the CCNA exam so don’t worry about it. Okay let’s do step 1 and configure read-only and read/write communities on R1. ENABLE. CONF T. SNMP-SERVER, and I’ll use the question mark here. COMMUNITY, that’s the only available command. No HOST command, so we can’t even specify a server to send traps to. All we can do is configure communities here, and then try a few things out on the NMS. So, let’s configure those communities. COMMUNITY Cisco1 RO, that’s the read-only string. And then COMMUNITY Cisco2 RW, the read/write string. Okay, that’s all we can do. Now I’ll go on PC1. Click on Desktop, then MIB Browser. This let’s us view the different variables, the OIDs, in the MIB of R1. So, up here enter R1’s IP address, 192.168.1.254. However that’s not all. Click on advanced, and then enter those two communities we just configured. Cisco1 for the Read community, and Cisco2 for the Write community. I’ll leave it at SNMPv1, I’m not sure if other versions would work in Packet Tracer. Okay, now let’s explore some OIDs. First, how long has R1 been running, what’s the system uptime? Open the MIB Tree here, router_std MIBs, iso, org, dod, internet, mgmt, mib-2, system, and then here we can select ‘sysUpTime’. Then, look at the top right. Notice the Get operation is already selected, so I’ll just click on GO. And here, you can see the OID, and the value for that OID, this is the current uptime of R1, how long it has been turned on. Let’s check another one, the sysName variable will tell us R1’s hostname, which as you already know is R1. Okay let’s check out some information about R1’s interfaces. From ‘interfaces’, select ‘ifNumber’, and then send the Get. The value is 4, so R1 has 4 interfaces. Now I’ll expand ‘ifTable’ here, and ‘ifEntry’. Let’s click on ‘ifDescr’, and send a Get. Now you can see a description of each interface. It has a Vlan1 interface, and three gigabit ethernet interfaces, 0/0, 0/1, and 0/2. How about the ‘ifType’ OID? Send a Get, and you can see the interface type. So, these gigabitethernet interfaces are copper, not fiber-optic, interfaces. How about, ‘ifAdminStatus’? Send a Get, and you can see that only this interface, which is G0/0, is up, because it is enabled and connected to SW1. So, there are some other things we could check but I’ll leave it there. Now in step 3 let’s use a Set message to change a value on R1. I’ll do a Get once more for the system name. Next, change the operation type to Set. First, we have to select the data type, what kind of data is the host name? It is displayed here, ‘OctetString’. So, select OctetString here. Then enter a new value. You can change it to whatever you like, I’ll just change it to R11. Hit OK, then click GO to send the Set. As you can see, the value has been changed to R11. Now if I return to the CLI of the router, and hit enter, you can see the hostname has changed to R11. Let’s check the running config. DO SHOW RUN | INCLUDE HOST. So, it has been changed in the config, also. Okay, so that was a brief look at SNMP in Packet Tracer. There’s not much you can do with SNMP in packet tracer, but that’s okay since you don’t actually need to know the configurations for the CCNA exam. Next let’s take a look at a practice lab in Boson Software’s NetSim for CCNA. Okay here's today's Boson NetSim practice lab. As I've said before, SNMP configuration is not on the CCNA exam topics list. So there isn't an SNMP configuration lab in Boson NetSim for CCNA. There are plenty of labs for the IP services section of the exam, but not for SNMP because it's not on the exam topics list. So, for today's demonstration I will take a lab from NetSim for ENCOR 350-401. This is the core exam of the CCNP Enterprise certification. And they have a practice lab down here in the security section, configuring network device management. And that is this lab here. So this lab involves configuring VLANs, which you know, SNMP which you know a little bite, and then TACACS, which is AAA. That is something I will talk about in the security section of my course. Okay, so these are the SNMP commands you need to know. SNMP-SERVER CONTACT, COMMUNITY, HOST, and LOCATION. So these are commands I already covered. So you should be able to do this lab, even though you're not at the CCNP level yet. Or at least do the SNMP portion, not the TACACS portion. Okay, so let's get on it. I already did task 1 beforehand, which is configuring the management VLAN, because I want to get straight to task 2, which is configure and verify SNMP on Router1. And you can see what I did in task 1. So, I added another subinterface here on Router1 with an IP address. Created VLAN99 on these two switches and gave them IP addresses. Okay, so let's configure and verify SNMP on Router1. Okay, configure SNMP version 2 for read-only access using the community string Boson. Okay, so the command for all of these is SNMP-SERVER, or it begins like that. And the community is Boson. And it should be read-only. Now, we don't specify version 2 yet, we specify that in the SNMP-SERVER HOST command I believe. So that should be correct. Okay then the contact address, SNMP-SERVER CONACT snmp@boson.com. Okay then the location, SNMP-SERVER LOCATION R1_SNMP. And then I have to configure PC1 to be the trap receiver, so that means the NMS, network management station. And to use a community string of snmp_logs. Okay, we haven't configured that community string yet, but alright let's see. SNMP-SERVER HOST 10.10.0.2. We're supposed to use version 2, so...okay looks like they do not suport that command. snmp_logs is the community. And that's it. Yeah, okay. So on Router1 verify that SNMP is enabled for the correct community string. So let's use some other show commands here. SHOW SNMP, and look we can view all of those things we just configured. SNMP COMMUNITY. There it is, community name boson and it is read-only. And this looks like it is a default string, I did not configure that. Let me see if that's in the configuration. INCLUDE COMMUNITY. No it is not in the configuration, so this looks like a default community string. Okay, the location. SHOW SNMP LOCATION. Okay, that is correct. SHOW SNMP CONTACT. snmp@boson.com, okay. Verify that SNMP is enabled for the trap receiver with the correct community string. SHOW SNMP HOST. Okay, there it is, 10.10.0.2, PC1. Notice UDP port 162, that is the port that the NMS uses to receive SNMP messages. Traps are enabled by default. User, this is the community. And it says security model version 1, so this might not be working exactly as intended. Let me check. So I have not finished this lab of course, there's still a lot to configure. But I will use the grade lab function to see if I configured this SNMP portion correctly. Grade lab. Okay and let's check out Router1's configuration. Okay, so this is the, this is part of the AAA configuration. TACACS, that's also AAA. And here this login authentication aaa_authentication. But looks like the SNMP configuration is correct. Here it is. Okay, so that is this short SNMP practice lab. And we can also check out Boson's lab solutions down here. They have good explanations. Let me see...here. Configure and verify SNMP on Router1. So basically it just shows the commands you have to use with some sample output of the show commands. Okay, so that's a quick look at SNMP, simple network management protocol, configuration in Boson NetSim. Once again, this is not part of the CCNA exam topics list. So you don't really have to worry about remembering these SNMP commands yet. But once you do go on to your CCNP studies, if you do, you'll definitely need to know them. Okay, so if you want to get a copy of Boson NetSim for CCNA, please follow the link in the video description. Before finishing today’s video I want to thank my JCNP-level channel members. To join, please click the ‘Join’ button under the video. Thank you to H W, Brandon, Samil, Aaron, Tech Alameda, Marcel, Magrathea, Kone, Donald, C Mohd, Gustavo, Anthony, Biraj, Junhong, Benjamin, Tshepiso, Justin, Prakaash, Nasir, Erlison, Apogee, Marko, Daming, Jhilmar, Ed, Value, John, Funnydart, Velvijaykum, Mark, Yousif, Boson Software, Devin, Lito, Yonatan, and Vance. Sorry if I pronounced your name incorrectly, but thank you so much for your support. This is the list of JCNP-level members at the time of recording by the way, February 8th 2021. If you signed up recently and your name isn’t on here don’t worry, you’ll be in future videos. Thank you for watching. Please subscribe to the channel, like the video, leave a comment, and share the video with anyone else studying for the CCNA. If you want to leave a tip, check the links in the description. I'm also a Brave verified publisher and accept BAT, or Basic Attention Token, tips via the Brave browser. That's all for now.

Transcript for:SNMP Configuration and Verification

Transcript for:
SNMP Configuration and Verification