21
2-1-3-3. Switch Cascading in Topology
•
Takes the Delay Time into Account
Theoretically, the switch partitions the collision domain for each port in switch
cascading that you may up-link the switches unlimitedly. In practice, the network
extension (cascading levels & overall diameter) must follow the constraint of the IEEE
802.3/802.3u/802.3z and other 802.1 series protocol specifications, in which the
limitations are the timing requirement from physical signals defined by 802.3 series
specification of Media Access Control (MAC) and PHY, and timer from some OSI layer 2
protocols such as 802.1d, 802.1q, LACP and so on.
The fiber, TP cables and devices’ bit-time delay (round trip) are as follows:
1000Base-X TP, Fiber
100Base-TX TP
100Base-FX Fiber
Round trip Delay: 4096
Round trip Delay: 512
Cat. 5 TP Wire:
11.12/m
Cat. 5 TP Wire:
1.12/m
Fiber Cable:
1.0/m
Fiber Cable :
10.10/m
TP to fiber Converter: 56
Bit Time unit : 1ns (1sec./1000 Mega bit) Bit Time unit: 0.01
μ
s (1sec./100 Mega bit)
Table 2-2
Sum up all elements’ bit-time delay and the overall bit-time delay of wires/devices
must be within Round Trip Delay (bit times) in a half-duplex network segment (collision
domain). For full-duplex operation, this will not be applied. You may use the TP-Fiber
module to extend the TP node distance over fiber optic and provide the long haul
connection.
•
Typical Network Topology in Deployment
A hierarchical network with minimum levels of switch may reduce the timing delay
between server and client station. Basically, with this approach, it will minimize the
number of switches in any one path; will lower the possibility of network loop and will
improve network efficiency. If more than two switches are connected in the same network,
select one switch as Level 1 switch and connect all other switches to it at Level 2.
Server/Host is recommended to connect to the Level 1 switch. This is general if no VLAN
or other special requirements are applied.
Содержание L2 Plus
Страница 1: ......
Страница 2: ......
Страница 3: ...16 Port SFP 8 Port Combo GbE L2 Plus Managed Switch...
Страница 4: ...2...
Страница 8: ...6 Revision History Release Date Revision 0 91 2008 03 03 A1 0 95 2008 06 25 A2 0 95 2008 07 21 A2...
Страница 36: ...34 Fig 2 15 Office Network Connection Fig 2 14 Peer to peer Network Connection...
Страница 56: ......
Страница 78: ...22 Fig 3 24...
Страница 81: ...25 Fig 3 26...
Страница 88: ...32 Fig 3 31...
Страница 96: ...40 Fig 3 39 Fig 3 40 Fig 3 41...
Страница 108: ...52 Fig 3 54 Set up Typical Network Application Rules Finish Fig 3 55 Set up Typical Network Application Rules Finish...
Страница 112: ...56 Fig 3 62 Set up VLAN Tag Priority Mapping Finish...
Страница 119: ...63 Fig 3 67 Ingress Port Fig 3 68...
Страница 121: ...65 Fig 3 70...
Страница 122: ...66 Fig 3 71 Fig 3 72 Fig 3 73 ARP...
Страница 123: ...67 Fig 3 74 ARP Fig 3 75 ARP Fig 3 76 ARP Fig 3 77 ARP...
Страница 124: ...68 Fig 3 78 ARP Fig 3 79 ARP Fig 3 80 ARP Fig 3 81 ARP...
Страница 125: ...69 Fig 3 82 ARP Fig 3 83 ARP Fig 3 84 ARP Fig 3 85 ARP Fig 3 86 ARP...
Страница 126: ...70 Fig 3 87 IPv4 Fig 3 88 IPv4 Fig 3 89 IPv4...
Страница 127: ...71 Fig 3 90 IPv4 Fig 3 91 IPv4 Fig 3 92 IPv4 Fig 3 93 IPv4 Fig 3 94 IPv4...
Страница 128: ...72 Fig 3 95 IPv4 Fig 3 96 IPv4 Fig 3 97 IPv4 Fig 3 98 IPv4 Fig 3 99 IPv4...
Страница 129: ...73 Fig 3 100 IPv4 Fig 3 101 IPv4 Fig 3 102 IPv4...
Страница 130: ...74 Fig 3 103 IPv4 Fig 3 104 IPv4 Fig 3 105 IPv4...
Страница 131: ...75 Fig 3 106 IPv4 Fig 3 107 IPv4 Fig 3 108 IPv4...
Страница 132: ...76 Fig 3 109 IPv4 Fig 3 110 IPv4 Fig 3 111 IPv4...
Страница 133: ...77 Fig 3 112 IPv4 Fig 3 113 IPv4 Fig 3 114 IPv4...
Страница 134: ...78 Fig 3 115 IPv4 Fig 3 116 IPv4 Fig 3 117 Action...
Страница 135: ...79 Fig 3 118 Rate Limiter Fig 3 119 Port Copy...
Страница 136: ...80 Fig 3 120 DMAC Filter Fig 3 121 VLAN ID Filter Fig 3 122 VLAN ID Filter...
Страница 148: ...92 Fig 3 125 Set up Policy Rules Fig 3 126 Set up Policy Rules Fig 3 127 Set up Policy Rules...
Страница 149: ...93 Fig 3 128 Set up Policy Rules Finish Fig 3 129 Set up Port Policies Fig 3 130 Set up Port Policies...
Страница 150: ...94 Fig 3 131 Set up Port Policies Fig 3 132 Set up Port Policies Finish...
Страница 151: ...95 Fig 3 133 Set up Typical Network Application Rules Fig 3 134 Set up Typical Network Application Rules...
Страница 164: ...108 Fig 3 143 802 1X Server Configuration...
Страница 168: ...112 Fig 3 145 802 1X Status...
Страница 194: ...138 Fig 3 161 Mirror Configuration...
Страница 214: ...158 Fig 4 1 Fig 4 2 LGB1005A R2 LGB1005A R2 LGB1005A R2 LGB1005A R2...
