Difference between revisions of "Spanning Tree protocol history"
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| [[PVST+]]|| Cisco proprietær || - || Per-VLAN || [[IEEE 802.1Q]],[[ISL]] || Kan anvendes || [[PVST]],[[PVST+]],[[CST]] | | [[PVST+]]|| Cisco proprietær || - || Per-VLAN || [[IEEE 802.1Q]],[[ISL]] || Kan anvendes || [[PVST]],[[PVST+]],[[CST]] | ||
|} | |} | ||
| + | = Cisco og Spanning-Tree = | ||
| + | Default Spanning-Tree protokol på Cisco Switche er [[PVST+]] (Per-VLAN Spanning Tree plus) | ||
| + | <source lang="cli"> | ||
| + | Dist2#<input>conf t</input> | ||
| + | Enter configuration commands, one per line. End with CNTL/Z. | ||
| + | Dist2(config)#<input>spanning-tree mode ?</input> | ||
| + | mst Multiple spanning tree mode | ||
| + | <notice>pvst Per-Vlan spanning tree mode</notice> | ||
| + | rapid-pvst Per-Vlan rapid spanning tree mode | ||
| + | Dist2(config)#<input>spanning-tree mode pvst</input> | ||
| + | Dist2(config)#<input>^Z</input> | ||
| + | Dist2# | ||
| + | *Mar 1 00:16:47.111: %SYS-5-CONFIG_I: Configured from console by console | ||
| + | Dist2#<input>show spanning-tree</input> | ||
| + | |||
| + | VLAN0001 | ||
| + | Spanning tree enabled protocol <notice>ieee</notice> | ||
| + | Root ID Priority 32769 | ||
| + | Address 0018.b989.8400 | ||
| + | Cost 19 | ||
| + | Port 5 (FastEthernet0/3) | ||
| + | Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec | ||
| + | |||
| + | Bridge ID Priority 32769 (priority 32768 sys-id-ext 1) | ||
| + | Address 001b.0c05.b400 | ||
| + | Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec | ||
| + | Aging Time 300 sec | ||
| + | |||
| + | Interface Role Sts Cost Prio.Nbr Type | ||
| + | ------------------- ---- --- --------- -------- -------------------------------- | ||
| + | Fa0/1 Desg FWD 19 128.3 P2p | ||
| + | Fa0/3 Root FWD 19 128.5 P2p | ||
| + | Fa0/12 Desg FWD 19 128.14 P2p | ||
| + | </source> | ||
| + | |||
| + | {{#css: | ||
| + | pre { font-family: Lucida Console; font-weight: bold; font-size: 14px; color: #00FF00; background: black; margin: 10px 50px; width: 800px; line-height: 200%; overflow: auto;} | ||
| + | }} | ||
[[Category:Cisco]][[Category:CCDP]][[Category:CCNP]][[Category:IOS]][[Category:Network]][[Category:Spanning Tree]] | [[Category:Cisco]][[Category:CCDP]][[Category:CCNP]][[Category:IOS]][[Category:Network]][[Category:Spanning Tree]] | ||
Revision as of 08:55, 30 July 2009
Den originale Spanning Tree Protocol IEEE 802.1D var udviklet til Bridgede eller Switchede netværk uden VLAN's. Derfor var det nødvendigt at videreudvikle Spanning tree protokollen for at tilgode netværk der anvender VLAN.
Cisco anbefaler at man anvender PVST+ i større netværk, men mange andre anbefaler anvendelsen af MST da det er en IEEE standard, samt at konfigurationen er mere overskuelig.
| Protokol | Standard/Proprietær | Årstal | Instanser | Trunk typer | Rapid | Virker sammen med |
|---|---|---|---|---|---|---|
| STP | IEEE 802.1D-1990 | 1990 | 1 | ingen | Nej | - |
| CST | IEEE 802.1Q-1998 | 1998 | 1 | IEEE 802.1Q | Kan anvendes | - |
| MST | IEEE 802.1Q-2005 | 2005 | (Cisaco 16) | IEEE 802.1Q | Kan anvendes | - |
| PVST | Cisco proprietær | - | Per-VLAN | ISL | Kan anvendes | - |
| PVST+ | Cisco proprietær | - | Per-VLAN | IEEE 802.1Q,ISL | Kan anvendes | PVST,PVST+,CST |
Cisco og Spanning-Tree
Default Spanning-Tree protokol på Cisco Switche er PVST+ (Per-VLAN Spanning Tree plus)
Dist2#<input>conf t</input>
Enter configuration commands, one per line. End with CNTL/Z.
Dist2(config)#<input>spanning-tree mode ?</input>
mst Multiple spanning tree mode
<notice>pvst Per-Vlan spanning tree mode</notice>
rapid-pvst Per-Vlan rapid spanning tree mode
Dist2(config)#<input>spanning-tree mode pvst</input>
Dist2(config)#<input>^Z</input>
Dist2#
*Mar 1 00:16:47.111: %SYS-5-CONFIG_I: Configured from console by console
Dist2#<input>show spanning-tree</input>
VLAN0001
Spanning tree enabled protocol <notice>ieee</notice>
Root ID Priority 32769
Address 0018.b989.8400
Cost 19
Port 5 (FastEthernet0/3)
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Bridge ID Priority 32769 (priority 32768 sys-id-ext 1)
Address 001b.0c05.b400
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Aging Time 300 sec
Interface Role Sts Cost Prio.Nbr Type
------------------- ---- --- --------- -------- --------------------------------
Fa0/1 Desg FWD 19 128.3 P2p
Fa0/3 Root FWD 19 128.5 P2p
Fa0/12 Desg FWD 19 128.14 P2p