165
It is the contribution value of the path through this port to Root Bridge.
STP algorithm determines a best path to Root Bridge by calculating the
sum of path cost contributed by all ports on this path. A port with a
smaller path cost value would become the Root Port more possibly.
Configured Path Cost:
The range is 0 – 200,000,000. In the switch, if path cost is set to be zero,
the STP will get the recommended value resulted from auto-negotiation
of the link accordingly and display this value in the field of Path Cost
Status. Otherwise, it may show the value that the administrator set up in
Configured Path Cost and Path Cost Status.
802.1w RSTP recommended value: (Valid range: 1 – 200,000,000)
10 Mbps : 2,000,000
100 Mbps : 200,000
1 Gbps : 20,000
Default: 0
Priority:
Priority here means Port Priority. Port Priority and Port Number are
mixed to form the Port ID. Port IDs are often compared in order to
determine which port of a bridge would become the Root Port. The range
is 0 – 240.
Default is 128.
Admin Edge Port:
If user selects “Yes”, this port will be an edge port. An Edge Port is a port
connected to a device that knows nothing about STP or RSTP. Usually,
the connected device is an end station. Edge Ports will immediately
transit to forwarding state and skip the listening and learning state
because the edge ports cannot create bridging loops in the network. This
will expedite the convergence. When the link on the edge port toggles,
the STP topology keeps unchanged. Unlike the designate port or root
port though, an edge port will transit to a normal spanning-tree port
immediately if it receives a BPDU.
Default: No
Admin Point To Point:
We say a port is a point-to-point link, from RSTP’s view, if it is in full-
duplex mode but is shared link if it is in half-duplex mode. RSTP fast
convergence can only happen on point-to-point links and on edge ports.
This can expedite the convergence because this will have the port fast
transited to forwarding state.
There are three parameters, Auto, True and False, used to configure the
type of the point-to-point link. If configure this parameter to be Auto, it
means RSTP will use the duplex mode resulted from the auto-negotiation.
In today’s switched networks, most links are running in full-duplex mode.
For sure, the result may be half-duplex, in this case, the port will not fast
Содержание LGB1002A-R2
Страница 1: ...i 16 Port 1000BASE TX L2 Plus Managed Ethernet Switch...
Страница 5: ...v Revision History Release Date Revision 0 91 2008 03 12 A1 0 95 2008 06 30 A2...
Страница 32: ...26 Fig 2 15 Office Network Connection Fig 2 14 Peer to peer Network Connection...
Страница 43: ...37 Fig 3 6...
Страница 71: ...65 Fig 3 24...
Страница 89: ...83 Fig 3 39 Fig 3 40 Fig 3 41...
Страница 101: ...95 Fig 3 54 Set up Typical Network Application Rules Finish Fig 3 55 Set up Typical Network Application Rules Finish...
Страница 105: ...99 Fig 3 62 Set up VLAN Tag Priority Mapping Finish...
Страница 113: ...107 Fig 3 69 Frame Type Fig 3 70...
Страница 114: ...108 Fig 3 71 Fig 3 72 Fig 3 73 ARP...
Страница 115: ...109 Fig 3 74 ARP Fig 3 75 ARP Fig 3 76 ARP Fig 3 77 ARP...
Страница 116: ...110 Fig 3 78 ARP Fig 3 79 ARP Fig 3 80 ARP Fig 3 81 ARP...
Страница 117: ...111 Fig 3 83 ARP Fig 3 84 ARP Fig 3 85 ARP Fig 3 86 ARP Fig 3 87 ARP...
Страница 118: ...112 Fig 3 88 IPv4 Fig 3 89 IPv4 Fig 3 90 IPv4...
Страница 119: ...113 Fig 3 91 IPv4 Fig 3 92 IPv4 Fig 3 93 IPv4 Fig 3 94 IPv4 Fig 3 95 IPv4...
Страница 120: ...114 Fig 3 96 IPv4 Fig 3 97 IPv4 Fig 3 98 IPv4 Fig 3 99 IPv4 Fig 3 100 IPv4...
Страница 121: ...115 Fig 3 101 IPv4 Fig 3 102 IPv4 Fig 3 103 IPv4...
Страница 122: ...116 Fig 3 104 IPv4 Fig 3 105 IPv4 Fig 3 106 IPv4...
Страница 123: ...117 Fig 3 107 IPv4 Fig 3 108 IPv4 Fig 3 109 IPv4...
Страница 124: ...118 Fig 3 110 IPv4 Fig 3 111 IPv4 Fig 3 112 IPv4...
Страница 125: ...119 Fig 3 113 IPv4 Fig 3 114 IPv4 Fig 3 115 IPv4...
Страница 126: ...120 Fig 3 116 IPv4 Fig 3 117 IPv4 Fig 3 118 Action...
Страница 127: ...121 Fig 3 119 Rate Limiter Fig 3 120 Port Copy...
Страница 128: ...122 Fig 3 121 DMAC Filter Fig 3 122 VLAN ID Filter Fig 3 123 VLAN ID Filter...
Страница 140: ...134 Fig 3 126 Set up Policy Rules Fig 3 127 Set up Policy Rules Fig 3 128 Set up Policy Rules...
Страница 141: ...135 Fig 3 129 Set up Policy Rules Finish Fig 3 130 Set up Port Policies Fig 3 131 Set up Port Policies...
Страница 196: ...190 Fig 3 170...
Страница 204: ...198 Fig 4 1 Fig 4 2 LGB1002A R2 LGB1002A R2 LGB1002A R2 LGB1002A R2...
Страница 255: ...249 MAC Address Alias 1 00 02 03 04 05 06 aaa 2 00 33 03 04 05 06 ccc 3 00 44 33 44 55 44 www...
Страница 258: ...252 6 Enable 6 Normal 7 Enable 7 Normal 8 Enable 8 Normal...
Страница 318: ......
