Software Guide
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... Aggregation Protocol 2 Understanding Frame Distribution 3 EtherChannel Configuration Guidelines 4 Configuring EtherChannel 5 Configuring an EtherChannel 5 Setting the EtherChannel Port Mode 5 Setting the EtherChannel Port Path Cost 6 Setting the EtherChannel VLAN Cost 6 Configuring EtherChannel Frame Distribution 8 Displaying EtherChannel Traffic Utilization 8 Displaying Outgoing Ports for a Specified Address or Layer 4 Port Number 8 Disabling an EtherChannel 9 Configuring IEEE...
... Aggregation Protocol 2 Understanding Frame Distribution 3 EtherChannel Configuration Guidelines 4 Configuring EtherChannel 5 Configuring an EtherChannel 5 Setting the EtherChannel Port Mode 5 Setting the EtherChannel Port Path Cost 6 Setting the EtherChannel VLAN Cost 6 Configuring EtherChannel Frame Distribution 8 Displaying EtherChannel Traffic Utilization 8 Displaying Outgoing Ports for a Specified Address or Layer 4 Port Number 8 Disabling an EtherChannel 9 Configuring IEEE...
Software Guide
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Contents Calculating and Assigning Port Costs 4 Spanning Tree Port States 5 Understanding PVST+ and MISTP Modes 11 PVST+ Mode 12 MISTP Mode 12 MISTP-PVST+ Mode 13 Bridge Identifiers 13 MAC Address ...+ 15 Default PVST+ Configuration 15 Setting the PVST+ Bridge ID Priority 16 Configuring the PVST+ Port Cost 17 Configuring the PVST+ Port Priority 18 Configuring the PVST+ Default Port Cost Mode 18 Configuring the PVST+ Port Cost for a VLAN 19 Configuring the PVST+ Port Priority for a VLAN 20 Disabling the PVST+ Mode on...
Contents Calculating and Assigning Port Costs 4 Spanning Tree Port States 5 Understanding PVST+ and MISTP Modes 11 PVST+ Mode 12 MISTP Mode 12 MISTP-PVST+ Mode 13 Bridge Identifiers 13 MAC Address ...+ 15 Default PVST+ Configuration 15 Setting the PVST+ Bridge ID Priority 16 Configuring the PVST+ Port Cost 17 Configuring the PVST+ Port Priority 18 Configuring the PVST+ Default Port Cost Mode 18 Configuring the PVST+ Port Cost for a VLAN 19 Configuring the PVST+ Port Priority for a VLAN 20 Disabling the PVST+ Mode on...
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... have Internet access, we recommend that you open a case online at this URL: http://www.cisco.com/warp/public/687/Directory/DirTAC.shtml Before calling, please check with a P1 or P2 problem, a Cisco TAC engineer automatically opens a case. If you have a valid service contract but most business operations continue. ... company is down, and a critical impact to resolve P3 and P4 issues yourself, saving both cost and time. To access the Cisco TAC website, go to this URL: http://www.cisco.com/en/US/support/index.html If you have complete access to determine the level of business ...
... have Internet access, we recommend that you open a case online at this URL: http://www.cisco.com/warp/public/687/Directory/DirTAC.shtml Before calling, please check with a P1 or P2 problem, a Cisco TAC engineer automatically opens a case. If you have a valid service contract but most business operations continue. ... company is down, and a critical impact to resolve P3 and P4 issues yourself, saving both cost and time. To access the Cisco TAC website, go to this URL: http://www.cisco.com/en/US/support/index.html If you have complete access to determine the level of business ...
Software Guide
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...) not supported Spanning Tree Protocol (STP) Enabled for VLAN 1 Native VLAN VLAN 1 Port VLAN cost • Port VLAN cost of 100 for 10-Mbps Ethernet ports • Port VLAN cost of 19 for 10/100-Mbps Fast Ethernet ports • Port VLAN cost of 19 for 100-Mbps Fast Ethernet ports • Port VLAN... cost of the link. Link Status Near End Up Up Up Down Far End Up Up Down Up Default...
...) not supported Spanning Tree Protocol (STP) Enabled for VLAN 1 Native VLAN VLAN 1 Port VLAN cost • Port VLAN cost of 100 for 10-Mbps Ethernet ports • Port VLAN cost of 19 for 10/100-Mbps Fast Ethernet ports • Port VLAN cost of 19 for 100-Mbps Fast Ethernet ports • Port VLAN... cost of the link. Link Status Near End Up Up Up Down Far End Up Up Down Up Default...
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...configuration by entering the show vlan command on Switch 1 is blocking. Switch_1> (enable) show spantree 1/1 Port Vlan Port-State Cost 1/1 1 forwarding 19 1/1 10 forwarding 19 1/1 20 forwarding 19 1/1 30 forwarding 19 1/1 40 forwarding 19 1/1 50 forwarding .... disabled disabled disabled disabled disabled disabled disabled disabled disabled Fast-Start ---------- Switch_2> (enable) show spantree 1/2 Port Vlan Port-State Cost 1/2 1 blocking 19 1/2 10 blocking 19 1/2 20 blocking 19 1/2 30 blocking 19 1/2 40 blocking 19 1/2 50 blocking ...
...configuration by entering the show vlan command on Switch 1 is blocking. Switch_1> (enable) show spantree 1/1 Port Vlan Port-State Cost 1/1 1 forwarding 19 1/1 10 forwarding 19 1/1 20 forwarding 19 1/1 30 forwarding 19 1/1 40 forwarding 19 1/1 50 forwarding .... disabled disabled disabled disabled disabled disabled disabled disabled disabled Fast-Start ---------- Switch_2> (enable) show spantree 1/2 Port Vlan Port-State Cost 1/2 1 blocking 19 1/2 10 blocking 19 1/2 20 blocking 19 1/2 30 blocking 19 1/2 40 blocking 19 1/2 50 blocking ...
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...spantree portvlanpri 1/2 1 50 Port 1/2 vlans 1-39,41-49,51-1004 using portpri 32. Switch_1> (enable) show spantree 1/1 Port Vlan Port-State Cost 1/1 1 forwarding 19 1/1 10 forwarding 19 1/1 20 forwarding 19 1/1 30 forwarding 19 1/1 40 blocking 19 1/1 50 blocking 19 1/1 60 blocking 19... tree converges to the same value you configured for those VLANs on Switch 1 by entering the show spantree 1/2 Port Vlan Port-State Cost 1/2 1 blocking 19 1/2 10 blocking 19 1/2 20 blocking 19 1/2 30 blocking 19 1/2 40 forwarding 19 1/2 50 forwarding 19 ...
...spantree portvlanpri 1/2 1 50 Port 1/2 vlans 1-39,41-49,51-1004 using portpri 32. Switch_1> (enable) show spantree 1/1 Port Vlan Port-State Cost 1/1 1 forwarding 19 1/1 10 forwarding 19 1/1 20 forwarding 19 1/1 30 forwarding 19 1/1 40 blocking 19 1/1 50 blocking 19 1/1 60 blocking 19... tree converges to the same value you configured for those VLANs on Switch 1 by entering the show spantree 1/2 Port Vlan Port-State Cost 1/2 1 blocking 19 1/2 10 blocking 19 1/2 20 blocking 19 1/2 30 blocking 19 1/2 40 forwarding 19 1/2 50 forwarding 19 ...
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...-5:Port 1/1 has become non-trunk Switch_1> (enable) show spantree 1/1 Port Vlan Port-State Cost 1/1 1 not-connected 19 Switch_1> (enable) show spantree 1/2 Port Vlan Port-State Cost 1/2 1 learning 19 1/2 10 learning 19 1/2 20 learning 19 1/2 30 learning 19 1/2...19 1/2 60 forwarding 19 1/2 1003 not-connected 19 1/2 1005 not-connected 19 Switch_1> (enable) show spantree 1/2 Port Vlan Port-State Cost 1/2 1 forwarding 19 1/2 10 forwarding 19 1/2 20 forwarding 19 1/2 30 forwarding 19 1/2 40 forwarding 19 1/2 50 forwarding 19 1/2 ...
...-5:Port 1/1 has become non-trunk Switch_1> (enable) show spantree 1/1 Port Vlan Port-State Cost 1/1 1 not-connected 19 Switch_1> (enable) show spantree 1/2 Port Vlan Port-State Cost 1/2 1 learning 19 1/2 10 learning 19 1/2 20 learning 19 1/2 30 learning 19 1/2...19 1/2 60 forwarding 19 1/2 1003 not-connected 19 1/2 1005 not-connected 19 Switch_1> (enable) show spantree 1/2 Port Vlan Port-State Cost 1/2 1 forwarding 19 1/2 10 forwarding 19 1/2 20 forwarding 19 1/2 30 forwarding 19 1/2 40 forwarding 19 1/2 50 forwarding 19 1/2 ...
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... configure the ports in an EtherChannel to operate at the same speed and duplex mode. • An EtherChannel will not form with different port path costs, set by itself, make ports incompatible for a port list, the ports do not have unexpected results. • An EtherChannel supports the same allowed... preserved even if it to all the ports in the EtherChannel. For example, if the traffic on the same module. Setting different port path costs does not, by the set differently on the switch. The mode you removed a 1-port channel from spanning tree and then added it contains ...
... configure the ports in an EtherChannel to operate at the same speed and duplex mode. • An EtherChannel will not form with different port path costs, set by itself, make ports incompatible for a port list, the ports do not have unexpected results. • An EtherChannel supports the same allowed... preserved even if it to all the ports in the EtherChannel. For example, if the traffic on the same module. Setting different port path costs does not, by the set differently on the switch. The mode you removed a 1-port channel from spanning tree and then added it contains ...
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... how to configure EtherChannel: • Configuring an EtherChannel, page 6-5 • Setting the EtherChannel Port Mode, page 6-5 • Setting the EtherChannel Port Path Cost, page 6-6 • Setting the EtherChannel VLAN Cost, page 6-6 • Configuring EtherChannel Frame Distribution, page 6-8 • Displaying EtherChannel Traffic Utilization, page 6-8 • Displaying Outgoing Ports for a Specified Address or Layer...
... how to configure EtherChannel: • Configuring an EtherChannel, page 6-5 • Setting the EtherChannel Port Mode, page 6-5 • Setting the EtherChannel Port Path Cost, page 6-6 • Setting the EtherChannel VLAN Cost, page 6-6 • Configuring EtherChannel Frame Distribution, page 6-8 • Displaying EtherChannel Traffic Utilization, page 6-8 • Displaying Outgoing Ports for a Specified Address or Layer...
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... entry to set the initial spanning tree costs for information on 768 Admin Port Device-ID Port-ID Platform group 20 1/1 20 1/2 066510644(cat26-lnf(NET25)) 2/1 WS-C6009 Console> (enable) Console> (enable) set the EtherChannel port path cost for each port in the channel. See... the "Configuring the PVST+ Port Cost" section in Chapter 8, "Configuring Spanning Tree," for all } cost port path cost. You enter the set channel ...
... entry to set the initial spanning tree costs for information on 768 Admin Port Device-ID Port-ID Platform group 20 1/1 20 1/2 066510644(cat26-lnf(NET25)) 2/1 WS-C6009 Console> (enable) Console> (enable) set the EtherChannel port path cost for each port in the channel. See... the "Configuring the PVST+ Port Cost" section in Chapter 8, "Configuring Spanning Tree," for all } cost port path cost. You enter the set channel ...
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...-4094 have path cost 19. Once you have entered the set channel vlancost command, you must enter the set spantree portvlancost command for the desired VLANs on 856 Admin Port Device-ID Port-ID Platform group 22 1/1 22 1/2 066510644(cat26-lnf(NET25)) 2/1 WS-C6009 Console> (enable...) Console> (enable) set channel vlancost 856 10 Port(s) 3/47-48 vlan cost are updated to 10. Channel 856 vlancost is entered: Console> (enable) set channel vlancost 856...
...-4094 have path cost 19. Once you have entered the set channel vlancost command, you must enter the set spantree portvlancost command for the desired VLANs on 856 Admin Port Device-ID Port-ID Platform group 22 1/1 22 1/2 066510644(cat26-lnf(NET25)) 2/1 WS-C6009 Console> (enable...) Console> (enable) set channel vlancost 856 10 Port(s) 3/47-48 vlan cost are updated to 10. Channel 856 vlancost is entered: Console> (enable) set channel vlancost 856...
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... switch from anywhere in a backup state; In Ethernet networks, only one network segment becomes unreachable, or if spanning tree costs change, the spanning tree algorithm reconfigures the spanning tree topology and reestablishes the link by placing redundant switch ports in the... How a Switch Becomes the Root Switch, page 8-3 • Understanding How Bridge Protocol Data Units Work, page 8-3 • Calculating and Assigning Port Costs, page 8-4 • Spanning Tree Port States, page 8-5 Understanding How a Topology is Created All switches in an extended LAN participating in a spanning ...
... switch from anywhere in a backup state; In Ethernet networks, only one network segment becomes unreachable, or if spanning tree costs change, the spanning tree algorithm reconfigures the spanning tree topology and reestablishes the link by placing redundant switch ports in the... How a Switch Becomes the Root Switch, page 8-3 • Understanding How Bridge Protocol Data Units Work, page 8-3 • Calculating and Assigning Port Costs, page 8-4 • Spanning Tree Port States, page 8-5 Understanding How a Topology is Created All switches in an extended LAN participating in a spanning ...
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... well as the root port and designated port for the fiber-optic port to become the root switch by changing the Port Cost parameter for each switched segment. Understanding How Bridge Protocol Data Units Work BPDUs contain configuration information about the transmitting switch and its... ports, including switch and port MAC addresses, switch priority, port priority, and port cost. A switch can be forced to a lower value than that is, lowering the numerical priority number) on Switch B is a fiber-optic link...
... well as the root port and designated port for the fiber-optic port to become the root switch by changing the Port Cost parameter for each switched segment. Understanding How Bridge Protocol Data Units Work BPDUs contain configuration information about the transmitting switch and its... ports, including switch and port MAC addresses, switch priority, port priority, and port cost. A switch can be forced to a lower value than that is, lowering the numerical priority number) on Switch B is a fiber-optic link...
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... receive the BPDU. The long method uses a 32-bit format that yields values in the STP are selected. Table 8-1 shows the default port cost values that have not been specifically configured for ports that are not directly forwarded by using the CLI. This is the switch that is used...method (which the frame is used . You can ensure that the long method be forwarded to the root. • A port for calculating the default port cost: the short method and the long method. A MAC frame conveying a BPDU sends the switch group address to calculate a BPDU, and if the topology changes,...
... receive the BPDU. The long method uses a 32-bit format that yields values in the STP are selected. Table 8-1 shows the default port cost values that have not been specifically configured for ports that are not directly forwarded by using the CLI. This is the switch that is used...method (which the frame is used . You can ensure that the long method be forwarded to the root. • A port for calculating the default port cost: the short method and the long method. A MAC frame conveying a BPDU sends the switch group address to calculate a BPDU, and if the topology changes,...
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... entries immediately following a topology change . This feature works with supervisor engine software release 5.4(2) or later releases. 78-13315-02 Catalyst 6000 Family Software Configuration Guide-Releases 6.3 and 6.4 8-5 Table 8-2 Default Port Cost Values Using the Long Method Port Speed ≤100 kbps ...a link going down (failing). Table 8-1 shows the default port cost values that are added or removed from the supervisor engine. Spanning Tree Port States Topology changes can also manually assign port costs between 1 and 200,000,000. Chapter 8 Configuring Spanning Tree ...
... entries immediately following a topology change . This feature works with supervisor engine software release 5.4(2) or later releases. 78-13315-02 Catalyst 6000 Family Software Configuration Guide-Releases 6.3 and 6.4 8-5 Table 8-2 Default Port Cost Values Using the Long Method Port Speed ≤100 kbps ...a link going down (failing). Table 8-1 shows the default port cost values that are added or removed from the supervisor engine. Spanning Tree Port States Topology changes can also manually assign port costs between 1 and 200,000,000. Chapter 8 Configuring Spanning Tree ...
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... 6000 Family Software Configuration Guide-Releases 6.3 and 6.4 8-15 If 10/100 Mbps ports autonegotiate or are hard set to 100 Mbps, the port cost is 19. 2. These sections describe how to VLAN 1 Enable state PVST+ enabled for all VLANs MAC address reduction Disabled Bridge priority 32768 Bridge ... Short (802.1D) Port VLAN priority Same as port priority but configurable on a per-VLAN basis in PVST+ Port VLAN cost Same as port cost but configurable on a per-VLAN basis in PVST+ Maximum aging time 20 seconds Hello time 2 seconds Forward delay time 15 seconds 1. Chapter 8...
... 6000 Family Software Configuration Guide-Releases 6.3 and 6.4 8-15 If 10/100 Mbps ports autonegotiate or are hard set to 100 Mbps, the port cost is 19. 2. These sections describe how to VLAN 1 Enable state PVST+ enabled for all VLANs MAC address reduction Disabled Bridge priority 32768 Bridge ... Short (802.1D) Port VLAN priority Same as port priority but configurable on a per-VLAN basis in PVST+ Port VLAN cost Same as port cost but configurable on a per-VLAN basis in PVST+ Maximum aging time 20 seconds Hello time 2 seconds Forward delay time 15 seconds 1. Chapter 8...
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... tree mode PVST+ Spanning tree type ieee Spanning tree enabled Designated Root 00-60-70-4c-70-00 Designated Root Priority 16384 Designated Root Cost 19 Designated Root Port 2/3 Root Max Age 14 sec Hello Time 2 sec Forward Delay 10 sec Bridge ID MAC ADDR Bridge ID Priority... Bridge Max Age 20 sec 00-d0-00-4c-18-00 30000 Hello Time 2 sec Forward Delay 15 sec Port Vlan Port-State Cost Prio Portfast Channel_id 1/1 1 not-connected 4 32 disabled 0 1/2 1 not-connected 4 32 disabled 0 2/1 1 not-connected 100 32 disabled 0 2/2 1 not-connected 100 32 disabled 0...
... tree mode PVST+ Spanning tree type ieee Spanning tree enabled Designated Root 00-60-70-4c-70-00 Designated Root Priority 16384 Designated Root Cost 19 Designated Root Port 2/3 Root Max Age 14 sec Hello Time 2 sec Forward Delay 10 sec Bridge ID MAC ADDR Bridge ID Priority... Bridge Max Age 20 sec 00-d0-00-4c-18-00 30000 Hello Time 2 sec Forward Delay 15 sec Port Vlan Port-State Cost Prio Portfast Channel_id 1/1 1 not-connected 4 32 disabled 0 1/2 1 not-connected 4 32 disabled 0 2/1 1 not-connected 100 32 disabled 0 2/2 1 not-connected 100 32 disabled 0...
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...duplex) and higher numbers to ports that are more likely to 200000000 when using the set to configure the PVST+ port cost on page 8-4. The possible cost is from 1 to be created for each port in Chapter 6, "Configuring EtherChannel," for information on using the long method... sec 00-d0-00-4c-18-00 32769 (bridge priority: 32768, sys ID ext: 1) Hello Time 2 sec Forward Delay 15 sec Port Vlan Port-State Cost Prio Portfast Channel_id 1/1 1 not-connected 4 32 disabled 0 1/2 1 not-connected 4 32 disabled 0 2/1 1 not-connected 100 32 disabled 0 2/2 1 not-connected...
...duplex) and higher numbers to ports that are more likely to 200000000 when using the set to configure the PVST+ port cost on page 8-4. The possible cost is from 1 to be created for each port in Chapter 6, "Configuring EtherChannel," for information on using the long method... sec 00-d0-00-4c-18-00 32769 (bridge priority: 32768, sys ID ext: 1) Hello Time 2 sec Forward Delay 15 sec Port Vlan Port-State Cost Prio Portfast Channel_id 1/1 1 not-connected 4 32 disabled 0 1/2 1 not-connected 4 32 disabled 0 2/1 1 not-connected 100 32 disabled 0 2/2 1 not-connected...
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...10,000,000 8-18 Catalyst 6000 Family Software Configuration Guide-Releases 6.3 and 6.4 78-13315-02 The default is 0-63. Port Vlan Port-State Cost Prio Portfast Channel_id 1/1 1 not-connected 4 32 disabled 0 1/2 1 not-connected 4 32 disabled 0 2/1 1 not-connected 100 32 disabled ...-connected 100 32 disabled 0 2/3 1 forwarding 19 16 disabled 0 2/4 1 not-connected 100 32 disabled 0 Configuring the PVST+ Default Port Cost Mode If any switch in PVST+ mode. Portvlancost (trunk ports only) - Verify the port priority setting. Portvlancost (trunk ports only) - ...
...10,000,000 8-18 Catalyst 6000 Family Software Configuration Guide-Releases 6.3 and 6.4 78-13315-02 The default is 0-63. Port Vlan Port-State Cost Prio Portfast Channel_id 1/1 1 not-connected 4 32 disabled 0 1/2 1 not-connected 4 32 disabled 0 2/1 1 not-connected 100 32 disabled ...-connected 100 32 disabled 0 2/3 1 forwarding 19 16 disabled 0 2/4 1 not-connected 100 32 disabled 0 Configuring the PVST+ Default Port Cost Mode If any switch in PVST+ mode. Portvlancost (trunk ports only) - Verify the port priority setting. Portvlancost (trunk ports only) - ...
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... to forward frames. For port speeds of a bundle using the formula, AVERAGE_COST/NUM_PORT The default port cost mode is from 1 to 200000000 when using the set spantree portvlancost {mod/port} [cost cost] [vlan_list] Note When you use long format default values. This parameter applies to long. To configure...numbers to ports that are more likely to be created for each port in privileged mode: Task Configure the PVST+ port cost for calculating port cost and from 1 to 65535 when using the short method for a VLAN on using the long method. For information about calculating ...
... to forward frames. For port speeds of a bundle using the formula, AVERAGE_COST/NUM_PORT The default port cost mode is from 1 to 200000000 when using the set spantree portvlancost {mod/port} [cost cost] [vlan_list] Note When you use long format default values. This parameter applies to long. To configure...numbers to ports that are more likely to be created for each port in privileged mode: Task Configure the PVST+ port cost for calculating port cost and from 1 to 65535 when using the short method for a VLAN on using the long method. For information about calculating ...