ARP,Bridge, and DHCP-2

University of Babylon, IT College
Information Network Dep., Third Class, Second Semester
MTCNA Course
MikroTik Certified Network Associate
2015-2016
By M.Sc. I.T Alaa A. Mahdi

Bridge concepts

Creating bridges

Adding ports to bridges
Bridge concepts
Ethernet-like networks (Ethernet,
Ethernet over IP, IEEE802.11 in apbridge
or bridge mode, WDS, VLAN)
can be connected together using MAC
bridges. The bridge feature allows the
interconnection of hosts connected to
separate LANs as if they were attached
to a single LAN.
Bridge concepts
As bridges are transparent, they do not
appear in traceroute list, and no utility
can make a distinction between a host
working in one LAN and a host
working in another LAN if these
LANs are bridged.
Bridge concepts
Network loops may emerge
(intentionally or not) in complex
topologies. Without any special
treatment, loops would prevent
network from functioning normally, as
they would lead to avalanche-like
packet multiplication.
Bridge Interface Setup
To combine a number of networks into
one bridge, a bridge interface should
be created (later, all the desired
interfaces should be set up as its
ports). One MAC address will be
assigned to all the bridged interfaces
(the smallest MAC address will be
chosen automatically).