Passed my CCNA with 950 in january thanks to your OSPF videos and got a service engineer job after half a year. Even now you're saving my hide thanks for everything. Congrats on the 100k.
2:40 I cannot configure on int g1/0/1 the encapsulation dot1q it says "SW1(config-if)#switchport trunk encapsulation dot1q % Invalid input detected at '^' marker." Googled a bit and found out this answer "The reason you don't get a choice is probably because the switch only supports dot1q encapsulation so there is no choice to be made. You would only get a choice if the switch supported both ISL and dot1q." - that's kind of odd since you use the same packet tracer lab and have the auto fill encap... command. I did sh int g1/0/1 sw command and it says "Administrative Trunking Encapsulation: dot1q ; Operational Trunking Encapsulation: dot1q"
@@henryhaze8495 I’m now working as a network engineer. Can confirm. My environment has some older 3650s still in use which require you to enable dot1q, while all the newer models and chassis switches have it by default. Keep on the path! It pays off massively when you pass.
Yesterday I passed CCNA exam with 928 marks. Really thank you for your wonderful videos. I followed all of your videos, the books you have suggested(Cert Guide) and Boson exsim-max for last minute preparation. Really happy with your effort Jeremy. I have one question. Can you please make career guide video or live session as I need some guided suggestion for my future career.
Unfortunately I had forgotten how to configure vlans and such since its been 2 months almost since I saw those lectures. Im trying to finish it quickly so I can review. BTW Jeremy, it would be awesome if you could add inbetween labs every few lectures (say a week) that would require configuration from all the past 7 days. Maybe have a 20 day one too. That way we can review and not forget stuff after watching 70+ videos. I think that would help both the people and the course!
yes exactly! same here! and also i cant seem to ping, i revised my vlan thing with this video and i thought we were gonna make SVIs.. but even after his steps my pings are failing from pc 1-2
don't forget no shut for int f0/0 before assigning ip to int f0/0.10 and turning them on. Also it takes some time for phones to be configured . I thought I was missing sometimes, open the phone screen, after a while you see the phones are configured and the numbers are displayed.
at 2:40, I could not understand or I missed something. I tried on my lab, which I downloaded from your link. switchport trunk {i have allowed | native} the encapsulation is not available on there. BTW, I highly appreciate your effort. It is just wonderful, I am watching you videos for 2 months, I hope I will pass
@@lokpikpro that's because newer devices doesn't support ISL only 802.1q. That is why you don't need to type that command because its already running 802.1q when configuring a trunk interface. You can do that command in Multilayer Switch Model 3560. Try it in packet tracer.
@@janearltocson2965 I thought that at first, too, but what's really strange is that in his identical lab in the video, it DOES accept the command. 🤔 I'm just going to assume in his video, he has a different switch model than provided in the lab file. That's the only thing that makes sense.
FOR ANYONE HAVING ISSUES WITH (cannot configure on int g1/0/1 the encapsulation dot1q it says "SW1(config-if)#switchport trunk encapsulation dot1q % Invalid input detected at '^' marker.") ... GO TO VIDEO VLANs (Part 2) | Day 17 Lab TIME: 4:10
quick question about the vlan tagging - I though switches where what tagged packets and not the end hosts. If that is so then for step 3 why did Jeremy click on the packet at the end host before it got to the switch to check if it was tagged or not?
having an issue with the switchport trunk encapsulation dot1q command @ 2:44 SW1(config-if)#switchport trunk encapsulation dot1q ^ % Invalid input detected at '^' marker.
There was a strange exception (pbduguard) when I tried configuring the downlink interfaces one after the other (and not in a range as in the video). I had to rewatch the video and do it using range, then it worked.
17:23 As far as I understand untagged packets always forwarded to native vlan right? Then if we assume there is a vlan 20 on switch 2, because of native vlan mismatch we would be sending the packet to the wrong destination?
Hi, In Day 17 16:38, the video indicate if VLAN10 tries to reach VLAN30, the frame will be tagged as VLAN 30, if interface native vlan mismatched, the interface with VLAN 30 will discard the frame. However, for the last question in Boson, I can't tell what difference between the above situation, why the frame will be untagged?
Hi Jeremy, for the Phone, instead of showing the phone number, it shows "Configuring IP"? Checked the ROAS on both sub interfaces, do I need to do additional phone configuring?
No additional configuration should be required, assuming you're using my lab file. If you use my lab file and configure it exactly as I do and it still doesn't work, it might just be packet tracer acting up.
Did you ever figure this out? I'm having the same issue. When trying to configure int g1/0/1 with "switchport trunk encap dot1q", the switch says invalid input and only shows the native and allow commands for some reason as valid options so that might be it.
I know this is coming two years later, but I did the lab without specifying 'switchport trunk encapsulation dot1q' on SW1 G1/0/1 interface. The IP Phones did not get their phone numbers. I then specified what encapsulation to use on the trunk port G1/0/1 interface, followed by 'switchport mode trunk'. The IP Phones then received their phone numbers just fine. I assumed because the trunk link formed fine without any encapsulation errors I didn't need to the 'encapsulation dot1q' command on interface G1/0/1. Like Jeremy said, this is probably packet tracer acting up. Hope this command helps people in 2024 and beyond
I was able to ping and phone call successfully!! I did it differently I had all ports in the switch as access ports and just added the voice vlan. I also added only one sub interface for the voice vlan and the fa0/0 for vlan 10 subnet. Is that way of configuring wrong/not recommended or unconventional?
Hi Jeremy, On the last step. I didn't expect the ping to work. The destination PC is in VLAN 10, so I expect it to tag it with VLAN 10. Since PC2 (VLAN 20) is sending traffic to PC3 (VLAN 10), Switch1 should tag the traffic with VLAN 10's ID, not leave it untagged. The native VLAN configuration on Switch1's f0/4 interface (VLAN 20) only applies to untagged traffic received on that interface. When Switch1 forwards traffic from VLAN 20 to VLAN 10, it should tag the traffic with VLAN 10's ID. Could you kindly explain why it worked?
While configuring the trunk on SW1's G1/0/1 int, Packet tracer doesn't allow me to execute the command "switchport trunk encapsulation dot1q", it has never let me do it on any lab. Everything is working normally, I'm just wondering why that might be, and if it is something I should change in my packet tracer application settings/configurations.
some switches port normally no need to enable switchport trunk same case like your switch, but there are some switches need to enable switchport trunk hence need command "switchport trunk encapsulation dot1q"
Why doesn't vlan 10 have to be configured as the native vlan on R1? How does it know that untagged traffic belongs to it? Does it learn this from SW1 via CDP?
which protocols used in Site-to-Site VPN and which protocols used in Remote Access VPN... I checked many sources but some said IPsec, GRE, DSL, PPP and PPPoE for point-to-point and SSL, IPsec for remote access.... I refers Todd Lemmle book for CCNA 200-301 and he mentioned only IPsec, GRE, SSL, DMVPN, IPsec VTI... what about other protocols like DSL, PPP, PPPoE ?
I tried to configure this Boson setup in PT. Using 2960 switches. Unfortunately I cannot get untagged pings to VLAN hop. I tried this after a Boson ExSim question got me on this. I can get the PC's in the same VLAN to ping across the trunk, but after mismatching, I cannot get the VLAN hop of non-tagged traffic. In the simulation mode, I see ping being sent from sw A native trunk VLAN to the PC in the same VLAN on sw B rather than to the "native" VLAN on the trunk. Ugh!
So, looking at the simulation mode in PT, I see that with mismatched native vlans on the trunk, there is a problem. When PC1 attempts to ping the IP address of PC4, the arp request executes, then the switch recognizes that the MAC address for PC4 is in a different vlan and drops the request, so no arp resolution happens and the ping fails. Ideas? Again, I have live equipment that fails this process too. Is Boson wrong? I would hate to go into a CCNA test with wrong information!
Hi! On my way to get the CCNA certification, but I don't understand how did the PH2 got that phone number automatically, and can you change it? Did I miss something? 20 from 2010 I think is from the Vlan right?
If I start your CCNA course today, will you be done uploading all videos by the time I get to this video? Please let me know so I know when to start this course.
The mobile version is even more limited than regular packet tracer, and I think Cisco have stopped supporting it. If possible, find somewhere to access a PC to try it out!
Hi Jeremy, Thank you for the awesome lab Why is it that switch port g1/0/3 is an access port but switch port g1/0/1 is a trunk port but they are carrying traffic from the same number of vlans? Please answer this question. Thank you
why do i get these errors SW1>en SW1#conf t Enter configuration commands, one per line. End with CNTL/Z. SW1(config)#int range g1/0/2-3 SW1(config-if-range)#switchport mode access SW1(config-if-range)#swithcport access vlan 10 ^ % Invalid input detected at '^' marker.
SW1(config-if-range)#switchport access vlan 10 % Access VLAN does not exist. Creating vlan 10 SW1(config-if-range)#switchport voice vlan 20 % Voice VLAN does not exist. Creating vlan 20 SW1(config-if-range)#%SPANTREE-2-RECV_PVID_ERR: Received 802.1Q BPDU on non trunk GigabitEthernet1/0/2 VLAN1. %SPANTREE-2-BLOCK_PVID_LOCAL: Blocking GigabitEthernet1/0/2 on VLAN0001. Inconsistent port type. %SPANTREE-2-RECV_PVID_ERR: Received 802.1Q BPDU on non trunk GigabitEthernet1/0/3 VLAN1. %SPANTREE-2-BLOCK_PVID_LOCAL: Blocking GigabitEthernet1/0/3 on VLAN0001. Inconsistent port type.
Passed my CCNA with 950 in january thanks to your OSPF videos and got a service engineer job after half a year. Even now you're saving my hide thanks for everything. Congrats on the 100k.
Glad to help ;) Congrats on the CCNA
Please send me your email i wanna contact u
How do you managed to pass it ?
Which resources did u use?
Hey, what did you do in the frame time of six months after you got CCNA and getting the job effectvly?
Hi, Jeremy
This is your subscriber from China. You are really doing a great job!! The video is much helpful! Thank you
2:40 I cannot configure on int g1/0/1 the encapsulation dot1q it says "SW1(config-if)#switchport trunk encapsulation dot1q
% Invalid input detected at '^' marker."
Googled a bit and found out this answer "The reason you don't get a choice is probably because the switch only supports dot1q encapsulation so there is no choice to be made.
You would only get a choice if the switch supported both ISL and dot1q." - that's kind of odd since you use the same packet tracer lab and have the auto fill encap... command. I did sh int g1/0/1 sw command and it says "Administrative Trunking Encapsulation: dot1q ; Operational Trunking Encapsulation: dot1q"
Yep. I kept running into the same problem.
Had the same issue here
I'm having the same problem I do remember reading somewhere new cisco switches support dot1q by default
@@henryhaze8495 I’m now working as a network engineer. Can confirm. My environment has some older 3650s still in use which require you to enable dot1q, while all the newer models and chassis switches have it by default. Keep on the path! It pays off massively when you pass.
He mentioned this in his earlier videos on configuring VLANs. Only switches that support ISP can support this command.
yesterday I passed my first cisco Ccna exam and those videos helped me very much. thank you Jeremy!
Awesome, congrats!
How long did you study before taking the test?
@@pissedputin7738 It's depend on your experience. I was totally Inexperienced and had to started from scratch, therefore I studied 3 months.
Yesterday I passed CCNA exam with 928 marks. Really thank you for your wonderful videos. I followed all of your videos, the books you have suggested(Cert Guide) and Boson exsim-max for last minute preparation. Really happy with your effort Jeremy. I have one question. Can you please make career guide video or live session as I need some guided suggestion for my future career.
Which books you used
I will take my exam soon
Mr Jeremy thank you for your videos. Just passed today my CCNA. Thanks for detailed explanations :)
Awesome, congrats Amar!
Always well explained! Love these classes.
Unfortunately I had forgotten how to configure vlans and such since its been 2 months almost since I saw those lectures. Im trying to finish it quickly so I can review.
BTW Jeremy, it would be awesome if you could add inbetween labs every few lectures (say a week) that would require configuration from all the past 7 days. Maybe have a 20 day one too. That way we can review and not forget stuff after watching 70+ videos. I think that would help both the people and the course!
yes exactly! same here! and also i cant seem to ping, i revised my vlan thing with this video and i thought we were gonna make SVIs.. but even after his steps my pings are failing from pc 1-2
thank you, a lot to review, and remind. ROAS was around day 15 - 18 , I am glad I still remembered the commands
don't forget no shut for int f0/0 before assigning ip to int f0/0.10 and turning them on. Also it takes some time for phones to be configured . I thought I was missing sometimes, open the phone screen, after a while you see the phones are configured and the numbers are displayed.
Loved the video, very informative! Thank you Jeremy
No plans at the moment, work is quite. Definitely sometime soon though!
at 2:40, I could not understand or I missed something. I tried on my lab, which I downloaded from your link. switchport trunk {i have allowed | native}
the encapsulation is not available on there.
BTW, I highly appreciate your effort. It is just wonderful, I am watching you videos for 2 months, I hope I will pass
same here
The command switchport trunk encapsulation dot1q doesn’t work in the lab
@@lokpikpro that's because newer devices doesn't support ISL only 802.1q. That is why you don't need to type that command because its already running 802.1q when configuring a trunk interface.
You can do that command in Multilayer Switch Model 3560. Try it in packet tracer.
@@janearltocson2965 I thought that at first, too, but what's really strange is that in his identical lab in the video, it DOES accept the command. 🤔
I'm just going to assume in his video, he has a different switch model than provided in the lab file. That's the only thing that makes sense.
switchport trunk native vlan x is also dead for me, wont allow me to specify the native vlan.
FOR ANYONE HAVING ISSUES WITH (cannot configure on int g1/0/1 the encapsulation dot1q it says "SW1(config-if)#switchport trunk encapsulation dot1q
% Invalid input detected at '^' marker.")
... GO TO VIDEO VLANs (Part 2) | Day 17 Lab
TIME: 4:10
Same issue here
@tristanshaw7462 i gave the answer
Hey Pr Jeremy. How would you describe the difference between inter vlan routing and vlan leaking? THANK YOU again for everything.
Jeremy may i ask about how many more lessons are left inorder to fully complete the ccna
I was thinking the same thing once I saw that the playlist went from 88 to 89. Im just on video 4 so i have a loonngg way to go lol
quick question about the vlan tagging - I though switches where what tagged packets and not the end hosts. If that is so then for step 3 why did Jeremy click on the packet at the end host before it got to the switch to check if it was tagged or not?
Thank you Jeremy, by the way do you have any live streams coming up?
having an issue with the switchport trunk encapsulation dot1q command @ 2:44
SW1(config-if)#switchport trunk encapsulation dot1q
^
% Invalid input detected at '^' marker.
It seems in a recent version of Packet Tracer Cisco removed that command. No worries, you can configure it as a trunk without that command!
Ach, that's annoying. Thank you for commenting DBO, that issue popped up for me.
Thanks so much Jeremy
There was a strange exception (pbduguard) when I tried configuring the downlink interfaces one after the other (and not in a range as in the video). I had to rewatch the video and do it using range, then it worked.
17:23 As far as I understand untagged packets always forwarded to native vlan right? Then if we assume there is a vlan 20 on switch 2, because of native vlan mismatch we would be sending the packet to the wrong destination?
very good, many thanks
Hi, In Day 17 16:38, the video indicate if VLAN10 tries to reach VLAN30, the frame will be tagged as VLAN 30, if interface native vlan mismatched, the interface with VLAN 30 will discard the frame. However, for the last question in Boson, I can't tell what difference between the above situation, why the frame will be untagged?
Hi Jeremy, for the Phone, instead of showing the phone number, it shows "Configuring IP"? Checked the ROAS on both sub interfaces, do I need to do additional phone configuring?
No additional configuration should be required, assuming you're using my lab file. If you use my lab file and configure it exactly as I do and it still doesn't work, it might just be packet tracer acting up.
Did you ever figure this out? I'm having the same issue. When trying to configure int g1/0/1 with "switchport trunk encap dot1q", the switch says invalid input and only shows the native and allow commands for some reason as valid options so that might be it.
I've been having the same issue here, until I figure out you need to input: encapsulation dot1q vlan-number on the subinterface first.
I know this is coming two years later, but I did the lab without specifying 'switchport trunk encapsulation dot1q' on SW1 G1/0/1 interface. The IP Phones did not get their phone numbers. I then specified what encapsulation to use on the trunk port G1/0/1 interface, followed by 'switchport mode trunk'. The IP Phones then received their phone numbers just fine. I assumed because the trunk link formed fine without any encapsulation errors I didn't need to the 'encapsulation dot1q' command on interface G1/0/1. Like Jeremy said, this is probably packet tracer acting up. Hope this command helps people in 2024 and beyond
Thanks Jeremy!
hey jeremy i have a question. in what day. did you go over router on a stick. i must of have missed it
hey jeremy , nvm i found it
thanks
Thanks J
I was able to ping and phone call successfully!! I did it differently I had all ports in the switch as access ports and just added the voice vlan. I also added only one sub interface for the voice vlan and the fa0/0 for vlan 10 subnet. Is that way of configuring wrong/not recommended or unconventional?
If it works, it works!
@@JeremysITLab I mean you make a good point. Keep up the awesome videos
Will you explain the cloud computing and SDN in the future videos ?
Many thanks for your help 🌸
I will cover all CCNA exam topics!
@@JeremysITLab thanks i will check them in your website
תודה!
Hi Jeremy,
On the last step. I didn't expect the ping to work.
The destination PC is in VLAN 10, so I expect it to tag it with VLAN 10. Since PC2 (VLAN 20) is sending traffic to PC3 (VLAN 10), Switch1 should tag the traffic with VLAN 10's ID, not leave it untagged.
The native VLAN configuration on Switch1's f0/4 interface (VLAN 20) only applies to untagged traffic received on that interface. When Switch1 forwards traffic from VLAN 20 to VLAN 10, it should tag the traffic with VLAN 10's ID.
Could you kindly explain why it worked?
Thanks.
Packet tracer lab is broken I believe. switchport trunk encapsulation dot1q is not an allowed option.
it's a new sw model . You don't need to do it because the sw already supports dot1q. It was mentioned in the lecture video.
Any discount codes for BOSON package that includes the courseware, exsim and netsim
You can use my code: JEREMY15
Thanks. Networkchuck shows 25% discount but there are no codes
Jeremy, is your course which is available on your website compatible with android device???
Except for TH-cam, no.
2:43 i may have to do another VLAN review, but why do we make the INT connection from SW1 to R1 a trunk with the dot1q? is this for the Voice VLAN?
ohh because multiple VLANS will be passed through?
@@Jonathan-jd7hd exactly!
Thanks boss
2:40 I do not have the subcommand 'encapsulation dot1q'
While configuring the trunk on SW1's G1/0/1 int, Packet tracer doesn't allow me to execute the command "switchport trunk encapsulation dot1q", it has never let me do it on any lab. Everything is working normally, I'm just wondering why that might be, and if it is something I should change in my packet tracer application settings/configurations.
some switches port normally no need to enable switchport trunk same case like your switch, but there are some switches need to enable switchport trunk hence need command "switchport trunk encapsulation dot1q"
Jeremy bro, Please explain about ARP.
I covered it earlier in the course!
@@JeremysITLab Oh.. Could you please share the link here.. I am been trying your class on ARP but no luck.
@@nagarajd252 watch the earlier videos. If u go through from day 1, you will find it
Why doesn't vlan 10 have to be configured as the native vlan on R1? How does it know that untagged traffic belongs to it? Does it learn this from SW1 via CDP?
no becuz in the lecture vid jeremy said, the voice ones get tagged and the data (ordinary vlan) it doesn't.
which protocols used in Site-to-Site VPN and which protocols used in Remote Access VPN... I checked many sources but some said IPsec, GRE, DSL, PPP and PPPoE for point-to-point and SSL, IPsec for remote access.... I refers Todd Lemmle book for CCNA 200-301 and he mentioned only IPsec, GRE, SSL, DMVPN, IPsec VTI... what about other protocols like DSL, PPP, PPPoE ?
Hi Jeremy
Switchport trunk encapsulation dot1q command is not working for me ?
It’s saying
% invalid input detected at ‘ ^ ‘ marker.
Please assist
Will mpls question come for the ccna exam?....... And than u very much.... God bless u
Nope, it's not on the CCNA exam topics
2:24 , you should have still included it. Wondering how it's done at 5:08 :-/
You can check R1's configurations in my .pkt file
Hello jeremy , i checked on your links and fund ccna enchor course. so, that couse is ready ? if i pay it`ll be unlooked ?
Read the sales page for the course, the info is there!
why are my pings getting sent like 4 but received none?
I tried to configure this Boson setup in PT. Using 2960 switches. Unfortunately I cannot get untagged pings to VLAN hop. I tried this after a Boson ExSim question got me on this. I can get the PC's in the same VLAN to ping across the trunk, but after mismatching, I cannot get the VLAN hop of non-tagged traffic. In the simulation mode, I see ping being sent from sw A native trunk VLAN to the PC in the same VLAN on sw B rather than to the "native" VLAN on the trunk. Ugh!
In GNS3 I see spanning tree status on the trunk interface as BKN* Frustrated. Gonna have to try actual switches next.
So, looking at the simulation mode in PT, I see that with mismatched native vlans on the trunk, there is a problem. When PC1 attempts to ping the IP address of PC4, the arp request executes, then the switch recognizes that the MAC address for PC4 is in a different vlan and drops the request, so no arp resolution happens and the ping fails. Ideas? Again, I have live equipment that fails this process too. Is Boson wrong? I would hate to go into a CCNA test with wrong information!
Hi! On my way to get the CCNA certification, but I don't understand how did the PH2 got that phone number automatically, and can you change it? Did I miss something? 20 from 2010 I think is from the Vlan right?
Telphony is out of scope for CCNA, he pre configured that in the Labs.
You can do a a #show run to see how it was done.
I was too slow on the voice VLAN and spanning tree burned me lol
If I start your CCNA course today, will you be done uploading all videos by the time I get to this video? Please let me know so I know when to start this course.
tysm
I’m using VPN to access your courses from China. Hope I will also know how the VPN work after watching all your videos. LOL
what program is needed for flash cards?
Anki
Dear Jeremy, on my PT v8.2.2.400, PH1 do not received IP address even I can ping the R1. Any suggestion?
So, after download your labs. IPphones must be configured on R1 to communicate each other.
How did you convert hexadecimal 0014 to 20?
The IPV6 videos shows a great example of converting between binary and Hex but I am a little lost here
Convert from hex to binary, and then binary to decimal!
0014(hex) = 0 * 16^3 + 0 * 16^2 + 1 * 16^1 + 4 * 16^0 = 0 + 0 + 16 + 4 = 20(dec)
Hi jeremy, why we need to configure trunk in 2:47 when there is only 1 switch?
because we are passing two vlan traffic to the router
Great but Just question why we don t have a lab of qos but any why thx for your help a god bless u sir
There will be a QoS lab. But QoS configuration isn't on the CCNA exam topics list, and we didn't cover it in the lecture video.
@@JeremysITLab sorry sir thx for u re time and one more time GOd bless u
There no power command on the mobile version so I couldn't experiment with PoE :(
The mobile version is even more limited than regular packet tracer, and I think Cisco have stopped supporting it. If possible, find somewhere to access a PC to try it out!
Hi Jeremy,
Thank you for the awesome lab
Why is it that switch port g1/0/3 is an access port but switch port g1/0/1 is a trunk port but they are carrying traffic from the same number of vlans? Please answer this question.
Thank you
Check out the QoS part 1 video for an explanation of voice VLANs
@@JeremysITLab thanks
Hi
first
why do i get these errors
SW1>en
SW1#conf t
Enter configuration commands, one per line. End with CNTL/Z.
SW1(config)#int range g1/0/2-3
SW1(config-if-range)#switchport mode access
SW1(config-if-range)#swithcport access vlan 10
^
% Invalid input detected at '^' marker.
SW1(config-if-range)#switchport access vlan 10
% Access VLAN does not exist. Creating vlan 10
SW1(config-if-range)#switchport voice vlan 20
% Voice VLAN does not exist. Creating vlan 20
SW1(config-if-range)#%SPANTREE-2-RECV_PVID_ERR: Received 802.1Q BPDU on non trunk GigabitEthernet1/0/2 VLAN1.
%SPANTREE-2-BLOCK_PVID_LOCAL: Blocking GigabitEthernet1/0/2 on VLAN0001. Inconsistent port type.
%SPANTREE-2-RECV_PVID_ERR: Received 802.1Q BPDU on non trunk GigabitEthernet1/0/3 VLAN1.
%SPANTREE-2-BLOCK_PVID_LOCAL: Blocking GigabitEthernet1/0/3 on VLAN0001. Inconsistent port type.
Thank you very much Jeremy
Thanks Boss
Thanks.