PDU - Cisco Learning Network
A PDU describes eveything that is happening at a particular layer. So, for example, at layer 3, you have all the data that was passed down from 7,6,5,4 then a new layer 3 header gets attached …
Question on Layer 2/Layer 3 Communication - Cisco Learning …
No I completely understand the different PDU names and operation at different layers. The question is, does the PDU get modified for operation at a specific layer or is the PDU created …
Packet Tracer - One network fails to send PDU to another network
When I tried to send a PDU from one network to a remote network, it fails. Attached is the Packet Tracer file I am configuring along with the IP addressing scheme applied in this network.
MTU vs PDU - Cisco Learning Network
Jan 27, 2016 · PDU = Protocol Data Unit. The PDU describes the type of Unit, which is being transported within OSI layers 1-4. So, at L1 it is - simple as it is - the bit. At L2, the PDU is …
Why do switches learn MAC addresses from other's switches ports?
Aug 3, 2025 · Why do switches learn dinamically MAC addresses from other's switches ports, when the first traffic starts coming in, like STP frames and CPD frames?
CCNA - Study Notes 1 - OSI - TCP/IP Models / Devices / Protocols …
Knowledge Information Author Cisco Admin Body Article Details Title CCNA - Study Notes 1 - OSI - TCP/IP Models / Devices / Protocols / PDU's URL Name ccna-study-notes-1-osi-tcp-ip …
Packet Tracer 8.2.2 and WLC, LAP, CAPWAP don't connect
Jan 11, 2025 · In simulation mode (looking at the respective PDU) you can see the error that a join request (CAPWAP) sent by the LAP is not accepted by the WLC. I had the task configured …
Question Regarding PDU - Cisco Learning Network
A PDU represents the bits that include the headers and trailers for that layer, as well as the encapsulated data. For example, an IP packet, as shown in Figure 1-14, using OSI …
Having a problem pinging from Switch SVI to its Default Gateway …
2. The device decapsulates the PDU from the Ethernet frame. 3. The frame is an ARP frame. The ARP process processes it. 4. The ARP frame is a request. 5. The ARP request's sender IP …
Packet Tracer - Network fails sending PDU to another network
the blue boxs specifies the end device that have a fail sending pdu to another network (To ROUTER 1 or LAPTOP0) but from LAPTOP0 sending pdu to LAPTOP1 its succes.