Tài liệu Giới thiệu về IP Tables doc

... around in the dark # iptables -A OUTPUT -j LOG iptables -A INPUT -j LOG iptables -A FORWARD -j LOG iptables -A OUTPUT -j DROP iptables -A INPUT -j DROP iptables -A FORWARD -j DROP ... II. SỬ DỤNG IPTABLES 1. Khởi động iptables : Câu lệnh start, stop, và restart iptables . [root@bigboy tmp]# service iptables start [root@bigboy tmp]# service iptables stop [root@bigbo...

Ngày tải lên: 27/01/2014, 13:20

... infinite and the queue discipline is first-come first-served. We will introduce abbreviations for other arrival and service processes as we need them. Elementary relationships Table 4.1 summarizes ... relationships which are true, assuming that the system capacity is infinite, but regardless of the arrival or service Table 4.1. Commonly Used Notation for Queueing Systems Notation Description  .....

Ngày tải lên: 24/12/2013, 13:17

... this relationship is N 0 , the ratio of the cell slot rate to the peak cell rate. Given N 0 and a CLP requirement, we can read off a value for the utilization. This then needs to be multiplied by ... 3532 cell/s being multiplexed onto a 155.52 Mbit/s link, N 0 is 40 and, according to Figure 12.11, the utilization is about 0.4foraCLPof10 8 . This utilization is multiplied by 100 (i.e. C/m) to...

Ngày tải lên: 21/01/2014, 19:20

... or precedence queueing in IP. This is a static scheme: each arriving packet has a fixed, previously defined, priority level that it keeps for the whole of its journey across the network. In IPv4, the Type ... buffer . . . server Priority 2 buffer Priority P buffer Figure 16.4. HOL Priorities, or Precedence Queueing, in IP 274 IP BUFFER MANAGEMENT of priorities 1; packets of priority 3 will...

Ngày tải lên: 21/01/2014, 19:20

... Mekong Capital Mekong Capital Giới Thiệu về Six Sigma Trang 1 trên 17 Giới Thiệu về Six Sigma 6.11.2004 Ghi chú: Báo cáo này là tài liệu giới thiệu khái quát về Six Sigma dành cho các doanh ... Mekong Capital Giới Thiệu về Six Sigma Trang 7 trên 17 3. Tiến trình DMAIC Tiến trình DMAIC là trọng tâm của các dự án cải tiến quy trình Six Sigma. Các bước...

Ngày tải lên: 10/12/2013, 04:15

... buffer Figure 1.3. An Example of Label Multiplexing destinations can be multiplexed over the same link by being transmitted oneaftertheother.Thisiscalled‘label multiplexing’.Thelabelisused at each node ... Services (DiffServ), and Multiprotocol Label Switching (MPLS) are a variety of means aimed at achieving just that. BUFFERING IN ATM SWITCHES AND IP ROUTERS Both IP and ATM networks move...

Ngày tải lên: 24/12/2013, 13:17

... Chapter 11, page 183 Model: multiple ON–OFF sources – excess-rate analysis Use: token bucket configuration for traffic conditioning of aggregate IP flows Formulas: see multiple ON–OFF sources – excess-rate ... Chapter 9, page 146 Model: multiple ON–OFF sources – excess-rate analysis Use: combined burst-scale loss and delay analysis – suitable for IP and ATM scenarios with multiple flows (e.g....

Ngày tải lên: 24/12/2013, 13:17

... time is a measure of performance, as is the ‘loss’ of a customer. This also shows a general principle about the flow of traffic:introducing delay reduces the flow, and a reduced traffic flow requires ... INTENSITY Trafficvolumeisdefined as the total call holding time for all calls, i.e. the number of calls multiplied by the mean holding time per call. This is not very helpful in determining the tota...

Ngày tải lên: 24/12/2013, 13:17

... advance simulator pseudocode for the M/D/1 queue. Note that the WHILE loop in the main pseudocode is vectorized (using range variable i), as is the REPEAT loop in the Poisson function pseudocode (using ... sequence of bursts of cells. Such traffic sources, based on a cell-rate description are covered in Chapter 6. The multiplexing of bursts from different sources through an ATM buffer has to t...

Ngày tải lên: 24/12/2013, 13:17