Introduction to JUNOS OS (IJOS)
JUNOS Software Fundamentals
o JUNOS Software
o Traffic Processing
o Overview of JUNOS Platforms
User Interface Options
o User Interface Options
o The JUNOS Software CLI
o The J-Web GUI
EX Series Switch Recovery
Faulty ex 3200/ EX 4200 switch has been recovered. Seq of action which I followed
is as under:a.
Install -format tftp:/<server ip> <package name>
- Error Msg Cant open package Error (22)-b.
Install -format file:/<package na
ROUTING IN SWITCHED NETWORKS
A N SWERS
12.1 The average load expected over the course of the busiest hour of use during the
course of a day.
12.2 The tradeoff is between efficiency and resilience.
12.3 A static routing stra
DATA AND COMPUTER
COMMUNICATIONS EIGHTH EDITION CHAPTERS 1 - 12
Copyright 2007: William Stallings
2007 by William Stallings All rights reserved. No part of this document may be reproduced, in any form or by any means, o
VLAN Trunking Protocol (VTP) was developed by Cisco to reduce VLAN administration
effort in a switched network, making it a Cisco proprietary protocol. The comparable
IEEE standard in use by other manufacturers is GARP VLAN Registration Protocol
We briefly covered voice access ports earlier in the chapter also mentioning voice
VLANs. It is time now to dig a bit deeper into voice VLANs and do a little configuration
The voice VLAN is an ingenious feature that enables access ports to carry
In a perfect world you could come up with a configuration for your switches, apply the
configuration and expect it to work as you think it should. But in the real world,
configurations may not work as expected more often than you believe. Thus lets review
VLAN concepts may be a bit overwhelming at first, but surprisingly the actual
configuration of VLANs in a network of Cisco switches requires just a few simple steps:
Step 1 Create the VLAN.
Step 2 Assign switch ports to that VLAN.
In Example 7-2, we will
VLANs provide traffic separation at layer 2 of the OSI model. Hosts in a VLAN can
communicate freely and directly with other hosts on the same VLAN and it includes
unicasts, multicasts, and broadcasts. All three types of frames can flow freely and
A switch port can be in one of two modes: access and trunk. There are two ways a
switch port can settle down into one of these two modes: static and dynamic. You can
manually configure a switch port to be in the access or trunk mode in the static method.
n order to appreciate the need for virtual LANs, lets consider how LANs would be built
without switches using hubs only. As you are aware hubs are layer 1 devices without
any intelligence and they typically relay the frame received on one port to all othe
The ultimate goal of switches is to carry frames from the source to the appropriate
destination based on the destination Ethernet address in the frame header. Ethernet
addresses, also known as MAC (Media Access Control) addresses, are 6 bytes or 48
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