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Freebsd compiler kernel

Instruments Thunderlan#device TX # SMC Etherpower II (83c170 "EPIC")#device Vge # VIA vt612x Gigabit Ethernet#device VR # VIA Rhine, Rhine II#device WB # Winbond w89c840f#device XL # 3Com 3c90x ("Boomerang", "Cyclone")# ISA Ethernet NICs. PCCard NICs included.#device CS # Crystal Semiconductor cs89x0 NIC# ' device Ed ' requires ' device Miibus '#device Ed # ne[12]000, SMC Ultra, 3c503, DS8390 cards#device ex # Intel EtherExpress PRO/10 and pro/10+#de

FreeBSD kernel Compilation

# Device TX # SMC etherpower II (83c170 ''epic) # Device VR # via Rhine, Rhine II # Device WB # WINBOND w89c840f # Device XL # 3Com 3c90x (''boomerang, ''cyclone) # ISA Ethernet certificate. pccard has been added. # Device Cs # crystal semiconducs89x0 Nic # Device ED requires device miibus # Device ED # ne [12] 000, SMC Ultra, 3c503, ds8390 cards # Device ex # intel etherexpress Pro/10 and Pro/10 + # Device EP # etherlink III based cards # Device Fe

Installation and optimization of FreeBSD server (next)

#device VPO # needs SCBUs and DA# PCI Ethernet AdaptersDevice de # Dec/intel dc21x4x (' Tulip ')Device EM # Intel pro/1000 Adapter Gigabit Ethernet Card (' Wiseman ')Device Txp # 3Com 3cr990 (' Typhoon ')Device VX # 3Com 3c590, 3c595 (' vortex ')# PCI Ethernet adapters with common MII Bus Controller code# Note: Be sure to keep ' device Miibus ' to ensure availableDevice Miibus # MII bus SupportDevice DC # D

Cable TV Network (HFC) to establish computer network solutions

CATV Broadband Integrated Information network based on 3COM company CATV Access Network platform is a successful implementation of cable TV, data communication and network telephone "three nets in one" on the 750MHz bandwidth fiber-optic coaxial hybrid network (HFC). The open television, telephone, computer line of the public Information network, the main technical indicators to reach the world's advanced level. Now, there are 35 sets of TV programs d

Viewpoint: Performance Test of gigabit backbone switch

Currently, the mainstream Gigabit backbone switches have high forwarding capabilities and smaller sizes. They are suitable for common users. Among the six Ethernet switches we have tested, EDIMAX ES-5800R and LeaPComm6004 switch is not manageable switch, Accton es00008 and creative company Thinker3800 switch are network tube type switch, 3Com 4900 is support Layer 3 and Layer 4 switch, digital China D-Link DGS3308TG is a layer-3 switch. Performance fi

Gigabit Backbone Switch Test

Of the six Ethernet switches we tested, the Edimax es-5800r and LeaPComm6004 switches are not managed switches, Accton ES4508, and the Thinker3800 switches of the creators are all network-management switches, 3Com 4900 is to support the three-layer and four-layer switch, Shenzhou digital D-link DGS3308TG is a three-tier switch. Performance is the brunt The 6 products include all copper ports, all fiber ports, and gbic ports, of which

A course of intelligent Community Network construction

At present, the construction of intelligent community has gradually become a hot topic, and the construction of data network will become an important part of intelligent community construction. At the same time, the intelligent and networked residential district will bring new market opportunities to the developers of the community. For intelligent community Construction, 3Com according to the different operating environment and user requirements, th

Site input domain name cannot be accessed by restarting Wamp, but what happens after a few more?

] shutting down plugin ' CSV ' 2014-03-24 11:50:26 4048 [note] shutting down plugin ' Sha256_password ' 2014-03-24 11:50:26 4048 [Note] shutting down plugin ' Mysql_old_password ' 2014-03-24 11:50:26 4048 [ Note] shutting down plugin ' Mysql_native_password ' 2014-03-24 11:50:26 4048 [Note] shutting down plugin ' Binlog ' 2014- 03-24 11:50:26 4048 [note] Wampmysqld:shutdown complete 2014-03-24 11:50:27 4500 [note] Plugin ' federated ' is disable D. 20

Embedded firewall with a lock for each door

connected to the Internet for 24 hours. Telephone dial-up service usually assigns a new IP address to the user each time the user accesses the Internet, but the broadband service provider usually assigns a permanent fixed Internet address to each user, making it very easy for hackers to "lock down" their computers. 3Com Embedded firewall crystallization three minds 3Com Company to provide users with the in

Detailed Linux Sort command working principle and tutorial

Guge 50 3000 Sohu 100 4500 The first domain is the company name, the second domain is the number of companies, and the third field is the average employee salary. (other than the company name, other letters, all the written ^_^) 2 I want this file sorted alphabetically by company, which is sorted by the first field: (This facebook.txt file has three domains) $ Sort-t ' K 1 facebook.txt Baidu 100 5000 Google 110 5000 Guge 50 3000 Sohu 100

Analyze TCP three-way handshake using tcpdump

SourceAddress: IP Destionation Address: Options: optional field. Padding indicates that 32 bits is not enough to be filled with 0. For example, I caught such a package with tcpdump: 00:05:36. 631501 IP localhost.54504> localhost.9889:Flags [P.], seq 4289908547: 4289908560, ack 2355231328,Win 2050, options [nop, nop, TS val 28499978 ecr 28495907], length130 × 0000: 4500 0041 1f63 4000 4006 1d52 7f00 0001 E... A. c @. @. R ....0 × 0010: 7f00 0001 d4e

Debug Golang Apps with Pprof and Flame-graph

{ log.Fatal("could not write memory profile: ", err) } f.Close() }} Run the program ./logger -cpuprofile cpu.prof -memprofile mem.prof You can get cpu.prof and mem.prof files, using Go tool pprof analysis. go tool pprof logger cpu.profgo tool pprof logger mem.prof Net/http/pprof If the program is of type Httpserver, you only need to import the package: import _ "net/http/pprof" If Httpserver uses the package instead of go-gin starting with the default http package, y

Campus Network Integrated Wiring System Design Scheme

center to several major buildings, and connecting them to the secondary backbone nodes. The vswitch installed on the backbone network node is located at the second layer of the network. It is connected up to the backbone switch in the network center and down to the hub on each floor. The main bandwidth of the school campus network is 100 Mbps, And the upgrade to ATM or Gigabit Ethernet is considered. Level 3 is the HUB in the building, which is a Level 3 node. A three-level node is a LAN device

Network security viewed by HTTP hidden Channels (2)

Security | The network carefully observes the intercepted Httptunnel packet, and finds that the first packet followed by a three-time handshake contains a post action that is sent by HTC (client side) to the HTS (server side). As follows: 14:55:39.128908 client.yiming.com.51767 > Server.yiming.com.80:s 3521931836:3521931836 (0) win 8760 (DF) 0x0000 4500 002c d3cc 4000 fb06 53c9 xxxx xxxx E.,.. @... S.. f.# 0x0010 yyyy yyyy ca37 0050 d1ec 6a3c 0000 000

RouterOS2.8 hardware driver list (1)

Article Title: RouterOS2.8 hardware driver list (1 ). Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source. Device Driver List Document revision: 2.8 (Wed Oct 13 11:39:39 GMT 2004) Applies: MikroTik RouterOS V2.8 General Information Summary The document lists the drivers, included in MikroTik RouterOS and the devices that are tested to

Let's see how a gigabit backbone switch can "handle gigabit traffic"

The layer-3 forwarding capability is one of the most important performances of GE backbone switches. It not only improves the overall performance of the network, but also relieves network congestion in the case of network congestion. Our evaluation is mainly to measure the performance of the Gigabit backbone switch. At the same time, we also consider the functions of the switch through configuration and validation tests. Two of the Gigabit backbone switches we tested are capable of forwarding on

Brief Introduction to the H3C router market

H3C routers have developed rapidly and are also very competitive in the market. Here we will introduce the performance of H3C router products in the market for your reference. Recently, the US-renowned media Network World has published its evaluation results on H3C router S7506E (3Com 7906E) to the outside World, h3C router S7506E scored a high score of 4.28 (out of 5) in the evaluation. This evaluation lasted for five months and involved H3C routers

Python Beginner Summary (ii)

(1) DictionaryA dictionary is a mapping relationship: keys (key), values (value), Key-valueHow to create a dictionary: Create directly and use the DICT function to create>>> Ainfo = {'Wangdachui': 3000,'Niuyun': 2000,'linling': 4500,'Tianqi': 8000}>>> info = [('Wangdachui', 3000), ('Niuyun', 2000), ('linling', 4500), ('Tianqi', 8000)]>>> binfo =Dict (Info)>>> cinfo = Dict ([['Wangdachui', 3000], ['Niuyun',

Sort command usage details

specifies the domain -- Help: displays help. -- Version: displays the version information. Keys [root @ Jesse ~] # Cat c.txt 7 July 8 August 9 September 10 October 11 November 12 December 1 January 2 February 3 March 4 L 5 May 6 June [Root @ Jesse ~] # Sort-c c.txt Sort: c.txt: 4: disorder: 10 October // it indicates that the data is not arranged in a certain order. if nothing is displayed, it indicates that the data is classified in a certain

Understanding of the vector clock algorithm

nodes, A, B, and C, then our n is 3. We want to write only one copy W = 1, then according to W + r> n there are r = 3. There are the following scenarios: First, a received a request that the iPhone price is 4000. We now have 4000 [A: 1]; Before data is copied to B and C, someone told a that the price was increased to 4500. then there is 4500 [A: 2] On A, which overwrites the previous [A: 1] Then

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