Would you like to inspect the original subtitles? These are the user uploaded subtitles that are being translated: 1 00:00:00,000 --> 00:00:07,000 align:middle line:84% So what happens when we set 1 side to manual trunking 2 00:00:07,000 --> 00:00:13,000 align:middle line:84% so int g0/0 switchport mode trunk 3 00:00:13,000 --> 00:00:17,000 align:middle line:84% notice we have to specify an encapsulation 4 00:00:17,000 --> 00:00:23,000 align:middle line:84% so switchport trunk encapsulation sot1q switchport mode trunk 5 00:00:23,000 --> 00:00:27,000 align:middle line:84% So I’ve manually configured switch 1 to use trunking 6 00:00:27,000 --> 00:00:32,000 align:middle line:84% so sh int g0/0 switchport 7 00:00:32,000 --> 00:00:35,000 align:middle line:84% so this side is configured as a trunk 8 00:00:35,000 --> 00:00:38,000 align:middle line:84% and is operating as a trunk using 802.1Q 9 00:00:38,000 --> 00:00:42,000 align:middle line:84% on this switch sh interface trunk 10 00:00:42,000 --> 00:00:47,000 align:middle line:84% notice it's negotiated to use trunking with 802.1Q 11 00:00:47,000 --> 00:00:52,000 align:middle line:84% so its currently trunking even though this side was configured for auto. 12 00:00:52,000 --> 00:00:55,000 align:middle line:84% So sh int g0/0 switchport 13 00:00:55,000 --> 00:01:02,000 align:middle line:84% This was configured to use DTP or dynamic auto mode 14 00:01:02,000 --> 00:01:08,000 align:middle line:84% but it became a trunk because the switch on the left was configured as a trunk. 15 00:01:08,000 --> 00:01:11,000 align:middle line:84% So if you configure 1 side manually 16 00:01:11,000 --> 00:01:17,000 align:middle line:84% the other side will automatically be configured as a trunk when DTP is used 17 00:01:17,000 --> 00:01:23,000 align:middle line:84% when this side is configured as an access port 18 00:01:23,000 --> 00:01:28,000 align:middle line:84% so sh int g0/0 switchport 19 00:01:28,000 --> 00:01:31,000 align:middle line:84% Notice it was statically configured as an access port 20 00:01:31,000 --> 00:01:33,000 align:middle line:84% and is operating as an access port. 21 00:01:33,000 --> 00:01:38,000 align:middle line:84% Negotiation of trunking is off on this side 22 00:01:38,000 --> 00:01:42,000 align:middle line:84% it’s dynamically configured to use auto 23 00:01:42,000 --> 00:01:46,000 align:middle line:84% but the operational mode has become static access. 24 00:01:46,000 --> 00:01:53,000 align:middle line:84% So if 1 side is configured as a trunk statically and the other side is configured 25 00:01:53,000 --> 00:01:58,000 align:middle line:84% to use either dynamic auto or dynamic desirable a trunk will be formed 26 00:01:58,000 --> 00:02:03,000 align:middle line:84% but if 1 side is statically configured as an access port. 27 00:02:03,000 --> 00:02:07,000 align:middle line:84% The DTP side will become an access port. 28 00:02:07,000 --> 00:02:11,000 align:middle line:84% So the switch can dynamically be configured with the right mode. 29 00:02:11,000 --> 00:02:16,000 align:middle line:84% you can have a problem where 1 side is configured as access 30 00:02:16,000 --> 00:02:18,000 align:middle line:84% and 1 side is configured as a trunk port 31 00:02:18,000 --> 00:02:22,000 align:middle line:84% so you need to either manually configure both sides as a trunk 32 00:02:22,000 --> 00:02:28,000 align:middle line:84% or manually configure both sides as access or use DTP. 33 00:02:28,000 --> 00:02:35,000 align:middle line:84% The recommendation is that you manually configure both sides and turn off DTP 34 00:02:35,000 --> 00:02:42,000 align:middle line:84% So what we will do is do something like this on gigabit 0/0 35 00:02:42,000 --> 00:02:46,000 align:middle line:84% we’ve configured the encapsulation as dot1q, it’s an access port 36 00:02:46,000 --> 00:02:51,000 align:middle line:84% but to configure trunking, we type switchport mode trunk 37 00:02:51,000 --> 00:02:57,000 align:middle line:84% and we would type switchport nonegotiate to disable DTP. 38 00:02:57,000 --> 00:03:01,000 align:middle line:84% So this is the recommended configuration. 39 00:03:01,000 --> 00:03:04,000 align:middle line:84% Set your encapsulation to dot1q 40 00:03:04,000 --> 00:03:11,000 align:middle line:84% set the mode to trunking manually or statically and disable DTP 41 00:03:11,000 --> 00:03:14,000 align:middle line:84% Now we have to do that on both sides. 42 00:03:14,000 --> 00:03:19,000 align:middle line:84% So on this side, we will do something similar 43 00:03:19,000 --> 00:03:24,000 align:middle line:84% sh int g0/0 trunk 44 00:03:24,000 --> 00:03:29,000 align:middle line:84% notice gigabit 0/0 is configured as a trunk 45 00:03:29,000 --> 00:03:33,000 align:middle line:84% it’s configured manually or statically, so the mode is on. 46 00:03:33,000 --> 00:03:38,000 align:middle line:84% It’s currently trunking with the native VLAN set to 1. 5274