- Bridge:
- Bridge
(in Networking) = a device
that connects
two networks
that uses
the same network protocol
I found this correct definition online:
- Bridge
(in Networking) = a device
that connects
two networks
that uses
the same network protocol
- Capabilities of
a bridge:
- Receive a
frame in
the network protocol
The bridge can read (= interpret) the protocol fields in thde received frame:
- The bridge can read the source address in the frame
- The bridge can read the destination address in the frame
- Re-transmit a
received frame
unchanged
In particular:
- A bridge can not translate a frame from one network format into a frame in another network format !!!
- Receive a
frame in
the network protocol
-
Example:
Ethernet bridge
-
Example:
Token ring bridge
- Devices that
are not (ordinary) bridges:
- A device that
connects
2 different types of
networks:
Comment:
- Such a device is called:
- a (protocol) translating bridge
See: click here or click here
- Such a device is called:
- A device that
connects
more than 2
networks
(of the
same type):
Comment:
- Such a device is called:
- A multi-way bridge, or
- A switch
- Such a device is called:
- A device that
connects
2 different types of
networks:
- Fact:
- Some book/webpages
defines a bridge as:
- A network device that connects any 2 types of networks
- Example:
- Wikipedia:
A network bridge is a
network device that connects
multiple network segments.
According to this definition, a translating bridge is also a bridge:
- Wikipedia:
A network bridge is a
network device that connects
multiple network segments.
- Some book/webpages
defines a bridge as:
- In this course:
- Bridge does not perform protocol translation !!!
- In this course:
- Devices that
connect
different types of
networks are:
- Translating bridges
- Translating bridges send/receive MAC layer frames
- Translating bridges can convert one frame format into another frame format
- Routers
- Routers send/receive Network layer packets
- Router uses the MAC level service to transmit packets carried inside MAC level frame
From Wikipedia:
- A router is connected to two or more data lines from different networks.
See: click here
- Translating bridges
- Devices that
connect
different types of
networks are: