Ethernet Networks: Design, Implementation, Operation, Management 4th phần 1 pot

... Edition 0 4 71 97 517 6 (May 19 98) Internetworking LANs and WANs: Concepts, Techniques and Methods, Second Edition 0 4 71 97 514 1 (May 19 98) LAN Management with SNMP and RMON 0 4 71 14736 2 (September 19 96) chapter ... NETWORKS 539 10 .3 O THER NETWORK MANAGEMENT F UNCTIONS 5 41 C ONFIGURATION MANAGEMENT 542 P ERFORMANCE MANAGEMENT 543 F AULT MANAGEMENT 543 A CCOUNTING...

Ngày tải lên: 14/08/2014, 02:20

... symbols, which defines the unique code 11 000 10 0 01. This field replaces the first octet of the preamble in Ethernet and IEEE 802.3 frames whose composition is 10 1 010 10. End-of-Stream Delimiter The end-of-stream ... whose first letter is 19 1 Ethernet Networks: Design, Implementation, Operation, Management. Gilbert Held Copyright  2003 John Wiley & Sons, Ltd. ISBN: 0-4...

Ngày tải lên: 14/08/2014, 02:20

... no subnets: 11 111 111 11 111 111 00000000 00000000 Class B address format Class B subnet address format Octet 1 Octet 2 Octet 3 Octet 4 0 Network identifier Host identifier 1 Octet 1 Octet 2 Octet ... byte: 12 8 64 32 16 8 4 2 1 Based upon the above, a byte with the bit composition 10 000 011 would have the decimal value 12 8 + 2 + 1, or 13 1 decimal. Similarly, a byte with t...

Ngày tải lên: 14/08/2014, 02:20

... Attenuation NEXT 1. 0 4.2 39 .1 2.6 53.3 2.5 60.3 4.0 7.3 29.3 4.8 43.3 4.5 50.6 8.0 10 .2 24.3 6.7 38.2 6.3 45.6 10 .0 11 .5 22.7 7.5 36.6 7.0 44.0 16 .0 14 .9 19 .3 9.9 33 .1 9.2 40.6 20.0 — — 11 .0 31. 4 10 .3 39.0 25.0 ... Characteristics Operational Characteristics Ethernet 10 BASE-5 10 BASE-2 1BASE-5 10 BASE-T 10 BROAD-36 Operating rate (Mbps) 10 10 10 1 10 10 Ac...

Ngày tải lên: 14/08/2014, 02:20

... hub 2 WS 1- 1 3 4 N WS 1- 2 WS 1- 4 WS 1- N Up 1 Level-2 hub If all ports have normal-priority requests pending, then: Level -1 scan 1- 1, 1- 2, 1- 3, 1- 4, , 1- N Level-2 scan 2 -1, 2-2, 2-3, , 2-N Level -1 resulting ... times/meter 10 00BAE-LX or SX 10 .10 bit times/meter TABLE 3 .13 Computations for a Trans- mission Model 2 Repeater Component Bit Time DTE1 432 10 0 meters U...

Ngày tải lên: 14/08/2014, 02:20

... Load 10 0% Load Ethernet 15 26 406 812 72 7440 14 ,880 Fast Ethernet 15 26 4050 812 0 72 74,400 14 8,800 Gigabit Ethernet 15 26 40,600 81, 200 72 744,000 1, 488,000 10 Gigabit Ethernet 15 26 406,000 812 ,000 72 ... bytes D is direction bit LF identifies largest frame Size in bytes 000 0 01 010 011 10 0 10 1 11 0 11 1 516 15 00 2052 4472 819 1 Reserved Reserved Used...

Ngày tải lên: 14/08/2014, 02:20

... 11 0000 01. 0 011 1000.0 010 110 1.00000000 = 19 3.56.45.0 Subnet 1: 11 0000 01. 0 011 1000.0 010 110 1 .10 000000 = 19 3.56.45 .12 8 Subnet mask: 11 111 111 .11 111 111 .11 111 111 .10 000000 = 19 3.56.45 .12 8 In examining the above base ... example, assume the subnet mask is 255.255.255 .12 8. This means the mask extends the network portion of an IP address to 11 111 111 .11 111 11...

Ngày tải lên: 14/08/2014, 02:20

... IEEE 802 .11 standard. 802 .11 b Under the 802 .11 b extension to the IEEE 802 .11 standard the data rate was increased to 5.5 Mbps and 11 Mbps under DSSS operations. At the higher data wireless ethernet ... eight TABLE 8.3 2.4 GHz DSSS Channels Channel Frequency (MHz) 1 2 412 2 2 416 3 2422 4 2427 5 2432 6 2437 7 2442 8 2447 9 2452 10 2457 11 2462 12 2467 13 2473 2.4 GHz Frequency...

Ngày tải lên: 14/08/2014, 02:20

... access-group 11 0 in access-list 11 0 remark allow TCP with ACK or RST bit set access-list 11 0 permit TCP any any established access-list 11 0 remark allow Web access to server access-list 11 0 permit ... use port 30 01. For example, if your router’s IP address is 205 .13 1 .17 6 .1, you would enter the following command: telnet 205 .13 1 .17 6 .1 30 01 Now that we have an appreciatio...

Ngày tải lên: 14/08/2014, 02:20

... a 10 Gigabit Ethernet switch infrastructure to the central office serving the destination local loop. TABLE 11 .1 Gigabit Ethernet vs. 10 Gigabit Ethernet Attribute Gigabit Ethernet 10 Gigabit Ethernet Physical ... No Packets 65 12 7 octets in length Yes No Packets 12 8–255 octets in length Yes No Packets 256– 511 octets in length Yes No Packets 512 10 25 octets in length Yes N...

Ngày tải lên: 14/08/2014, 02:20