Network Warrior by Gary A. Donahue

By Gary A. Donahue

I even have this e-book in EPUB and PDF as retail (no conversion).

Written by means of networking veteran with two decades of expertise, Network Warrior offers an intensive and functional creation to the total community infrastructure, from cabling to the routers. What you want to learn how to move a Cisco certification examination corresponding to CCNA and what you want to understand to outlive within the genuine global are very various things. The options that this e-book bargains weren 't at the examination, yet they 're precisely what you want to do your activity well.

Network Warrior takes you step-by-step throughout the international of hubs, switches, firewalls, and extra, together with how one can troubleshoot a congested community, and whilst to improve and why. alongside the way in which, you 'll achieve an old point of view of varied networking good points, akin to the way in which Ethernet advanced. in keeping with the writer 's personal adventure in addition to these he labored for and with, community Warrior is a Cisco-centric ebook, concentrated totally on the TCP/IP protocol and Ethernet networks -- the world that Cisco platforms now dominates. The publication covers:

the kind of networks now in use, from LANs, WANs and MANs to CANs

* The OSI version and the layers interested in sending data
* Hubs, repeaters, switches, and trunks in practice
* vehicle negotiation and why it 's a typical challenge in community slowdowns
* direction maps, routing protocols, and switching algorithms in Cisco routers
* The resilient Ethernet -- the way to make issues really redundant
* Cisco 6500 multi-layer switches and the Catalyst 3750 switch
* Telecom nomenclature -- why it 's varied from the knowledge world
* T1 and DS3
* Firewall conception, designing entry lists, authentication in Cisco devices
* Server load balancing technology
* content material swap module in action
* Designing QOS and what QOS doesn't do
* IP layout and subnetting made easy

The ebook additionally explains easy methods to promote your principles to administration, how networks turn into a large number as a firm grows, and why swap regulate is your buddy. Network Warrior may also help community directors and engineers win the advanced battles they face on a daily basis.

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Extra info for Network Warrior

Sample text

However, the packet loss introduced can be seen as a positive situation, because we are not transmitting packets that violate the established service agreement. Also, as previously discussed, for a real‐time stream, a packet that arrives outside the time window in which it is considered relevant not only adds no value but also causes more harm than good because the receiver must still spend cycles processing an already useless packet. This perspective can be expanded to consider whether it makes sense to even allow this burst of 30 ms worth of traffic to enter the router on an ingress interface if, on egress, the traffic is mapped to a queue whose length is only 10 ms.

In a scenario of linked meter and policer tools, the only difference is that the next step in the chain of meter and policer tool receives a packet that is already colored. This color provides an extra input parameter. , from green to yellow), or lowered. 4 The Shaper Function The shaper function causes a traffic flow to conform to a bandwidth value referred to as the shaping rate. Excess traffic beyond the shaping rate is stored inside the shaper and transmitted only when doing so does not violate the defined shaping rate.

In terms of the queuing and scheduling requirements, black packets should be placed in Q1, which has a higher priority on egress, and white packets are placed in Q2. The rate of traffic leaving the router should not exceed 8 megabits per second (Mbps), but the rate control should also ensure that excess traffic is stored whenever possible rather than being discarded. The final requirement regards the rewrite rules. White packets colored yellow should have their marking set to the value X before leaving the router, to signal this coloring scheme to the next downstream router.

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