Information Technology Reference
In-Depth Information
R3 encapsulates the packet in an HDLC frame and forwards the frame out the correct interface.
21.
R2 receives the frame on the
Serial 0/0/1
interface. R2 strips off the header and looks up the
network address
192.168.1.0/24
in its routing table. This destination has a next-hop IP address
of
192.168.2.1
. The next-hop IP address is reachable out interface
Serial 0/0/0
.
22.
R2 encapsulates the packet in an HDLC frame and forwards the frame out the correct interface.
23.
R1 receives the frame on the
Serial 0/0/0
interface. R1 strips off the header and looks up the
destination network address
192.168.1.0/24
in its routing table. This destination address is
directly connected to the
FastEthernet 0/0
interface.
24.
R1 encapsulates the ping request in a frame with the source MAC address of (indicated device
name)
R1
and the destination MAC address of (indicate device name)
PC1
.
25.
R1 then sends the frame out on the media as an encoded bit stream.
26.
PC1 receives the bit stream on its
Ethernet (NIC)
interface. Because the destination MAC
address matches the MAC address of PC1, PC1 strips off the Ethernet header.
27.
The IP process on PC1 examines the
192.168.1.10
IP address to make sure that it matches its
own IP address. Then PC1 passes the data to the ICMP process.
28.
ICMP sends a “success” message to the requesting application.
29.
