Software Guide
Page 5
... P T E R 6 C H A P T E R 78-15486-01 Configuring Gigabit Ethernet Switching 5-1 Understanding How Gigabit Ethernet Works 5-1 Understanding How Gigabit Ethernet Flow Control Works 5-1 Understanding How Port Negotiation... the EtherChannel Spanning Tree Port VLAN Cost 6-9 Removing an EtherChannel Bundle 6-9 Displaying EtherChannel Configuration Information 6-10 Displaying EtherChannel Traffic Statistics 6-11 Displaying EtherChannel PAgP Statistics 6-12 EtherChannel Configuration Examples 6-12 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 v
... P T E R 6 C H A P T E R 78-15486-01 Configuring Gigabit Ethernet Switching 5-1 Understanding How Gigabit Ethernet Works 5-1 Understanding How Gigabit Ethernet Flow Control Works 5-1 Understanding How Port Negotiation... the EtherChannel Spanning Tree Port VLAN Cost 6-9 Removing an EtherChannel Bundle 6-9 Displaying EtherChannel Configuration Information 6-10 Displaying EtherChannel Traffic Statistics 6-11 Displaying EtherChannel PAgP Statistics 6-12 EtherChannel Configuration Examples 6-12 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 v
Software Guide
Page 23
... publication is organized, and its document conventions. Configuring Ethernet and Fast Ethernet Switching Describes how to configure Fast EtherChannel and and Gigabit EtherChannel Gigabit EtherChannel port bundles. Filter, UplinkFast, BackboneFast, and Loop Guard 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 xxiii Audience This publication is for experienced network...
... publication is organized, and its document conventions. Configuring Ethernet and Fast Ethernet Switching Describes how to configure Fast EtherChannel and and Gigabit EtherChannel Gigabit EtherChannel port bundles. Filter, UplinkFast, BackboneFast, and Loop Guard 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 xxiii Audience This publication is for experienced network...
Software Guide
Page 69
...Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 5-5 and trunk-capable network interface cards (NICs), connects to 1-Gbps bandwidth while averaging 250 Mbps in each connected port (1 Gbps total). • Servers B and C, also with channel- Each workstation can bundle...and transmit on. Each workstation connects to the Gigabit Ethernet network backbone. Each group of an 18-port server switching module (WS-X4418-GB) connecting multiple network servers and high-end workstations to a port in one oversubscribed port group and two...
...Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 5-5 and trunk-capable network interface cards (NICs), connects to 1-Gbps bandwidth while averaging 250 Mbps in each connected port (1 Gbps total). • Servers B and C, also with channel- Each workstation can bundle...and transmit on. Each workstation connects to the Gigabit Ethernet network backbone. Each group of an 18-port server switching module (WS-X4418-GB) connecting multiple network servers and high-end workstations to a port in one oversubscribed port group and two...
Software Guide
Page 70
...Ethernet Configuration Chapter 5 Configuring Gigabit Ethernet Switching Figure 5-1 Example of a Server Switching Network Topology Network backbone Backbone switch CAUTION THIS ASSEMBLY CONTAINS ELECTROSTATICSENSITIVE DEVICES 0% 100% 18069 Gigabit EtherChannel bundles Server A Server B Workstation 1 ...Full duplex Flow control • Oversubscribed Gigabit Ethernet ports (ports 3-18 on WS-X4418-GB): Flow control set to desired for receive (Rx) and on ...) Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 5-6 78-15486-01
...Ethernet Configuration Chapter 5 Configuring Gigabit Ethernet Switching Figure 5-1 Example of a Server Switching Network Topology Network backbone Backbone switch CAUTION THIS ASSEMBLY CONTAINS ELECTROSTATICSENSITIVE DEVICES 0% 100% 18069 Gigabit EtherChannel bundles Server A Server B Workstation 1 ...Full duplex Flow control • Oversubscribed Gigabit Ethernet ports (ports 3-18 on WS-X4418-GB): Flow control set to desired for receive (Rx) and on ...) Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 5-6 78-15486-01
Software Guide
Page 75
... EtherChannel This chapter describes how to configure Fast EtherChannel and Gigabit EtherChannel port bundles on installing Catalyst 4500 series Fast Ethernet and Gigabit Ethernet modules, refer to the Catalyst 4500 Series Installation Guide. Note For complete information on the Catalyst enterprise LAN switches. This chapter consists of these sections: • Understanding How EtherChannel Works, page...
... EtherChannel This chapter describes how to configure Fast EtherChannel and Gigabit EtherChannel port bundles on installing Catalyst 4500 series Fast Ethernet and Gigabit Ethernet modules, refer to the Catalyst 4500 Series Installation Guide. Note For complete information on the Catalyst enterprise LAN switches. This chapter consists of these sections: • Understanding How EtherChannel Works, page...
Software Guide
Page 76
... page 6-5. Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 6-2 78-15486-01 If a port within an EtherChannel fails, traffic previously carried over the failed port switches to be run only on Cisco switches and those switches released by ...Overview Fast EtherChannel and Gigabit EtherChannel port bundles let you can bundle into a single logical transmission path between a switch and a router, a host, or another switch. You can configure both Fast and Gigabit EtherChannel bundles as an EtherChannel. Depending on your ...
... page 6-5. Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 6-2 78-15486-01 If a port within an EtherChannel fails, traffic previously carried over the failed port switches to be run only on Cisco switches and those switches released by ...Overview Fast EtherChannel and Gigabit EtherChannel port bundles let you can bundle into a single logical transmission path between a switch and a router, a host, or another switch. You can configure both Fast and Gigabit EtherChannel bundles as an EtherChannel. Depending on your ...
Software Guide
Page 80
... stored in NVRAM and remain the same after the switch is also in auto mode, because neither port will not form a channel with any port. Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 6-6 78-15486-01 Configuring...EtherChannel Spanning Tree Port Cost, page 6-8 • Setting the EtherChannel Spanning Tree Port VLAN Cost, page 6-9 • Removing an EtherChannel Bundle, page 6-9 • Displaying EtherChannel Configuration Information, page 6-10 • Displaying EtherChannel Traffic Statistics, page 6-11 • Displaying EtherChannel...
... stored in NVRAM and remain the same after the switch is also in auto mode, because neither port will not form a channel with any port. Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 6-6 78-15486-01 Configuring...EtherChannel Spanning Tree Port Cost, page 6-8 • Setting the EtherChannel Spanning Tree Port VLAN Cost, page 6-9 • Removing an EtherChannel Bundle, page 6-9 • Displaying EtherChannel Configuration Information, page 6-10 • Displaying EtherChannel Traffic Statistics, page 6-11 • Displaying EtherChannel...
Software Guide
Page 81
...Fast EtherChannel and Gigabit EtherChannel Configuring EtherChannel Using PAgP Creating an EtherChannel You create an EtherChannel port bundle by hardware restrictions. When you create an EtherChannel, an administrative group number is assigned automatically if...WS-C4000 3/6 069003103(5500) 3/6 WS-C4000 Console> (enable) Defining an EtherChannel Administrative Group You can configure as an EtherChannel, verify the EtherChannel capabilities for the module or switch you are assigned to forwarding mode). 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches...
...Fast EtherChannel and Gigabit EtherChannel Configuring EtherChannel Using PAgP Creating an EtherChannel You create an EtherChannel port bundle by hardware restrictions. When you create an EtherChannel, an administrative group number is assigned automatically if...WS-C4000 3/6 069003103(5500) 3/6 WS-C4000 Console> (enable) Defining an EtherChannel Administrative Group You can configure as an EtherChannel, verify the EtherChannel capabilities for the module or switch you are assigned to forwarding mode). 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches...
Software Guide
Page 83
...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 channel vlancost 768 12 Channel 768 vlancost set channel ...configuration, perform this task in Step 1. Console> (enable) Removing an EtherChannel Bundle To return a Fast EtherChannel or Gigabit EtherChannel bundle to 31. show channel group 20 Admin Port Status Channel Channel group Mode... [mod_num[/port_num]] 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 6-9
...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 channel vlancost 768 12 Channel 768 vlancost set channel ...configuration, perform this task in Step 1. Console> (enable) Removing an EtherChannel Bundle To return a Fast EtherChannel or Gigabit EtherChannel bundle to 31. show channel group 20 Admin Port Status Channel Channel group Mode... [mod_num[/port_num]] 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 6-9
Software Guide
Page 86
... through four 100BASE-TX Fast Ethernet ports. 6-12 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 78-15486-01 EtherChannel Configuration Examples Chapter 6 Configuring Fast EtherChannel and Gigabit EtherChannel 835 0 0 0 0 0 0 Console>...; Configuration Example of Two-Port Gigabit EtherChannel, page 6-14 Note For examples of configuring VLAN trunks on EtherChannel port bundles, see the "Example VLAN Trunk Configurations" section on page 11-9. Display EtherChannel PAgP statistics by EtherChannel administrative group.
... through four 100BASE-TX Fast Ethernet ports. 6-12 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 78-15486-01 EtherChannel Configuration Examples Chapter 6 Configuring Fast EtherChannel and Gigabit EtherChannel 835 0 0 0 0 0 0 Console>...; Configuration Example of Two-Port Gigabit EtherChannel, page 6-14 Note For examples of configuring VLAN trunks on EtherChannel port bundles, see the "Example VLAN Trunk Configurations" section on page 11-9. Display EtherChannel PAgP statistics by EtherChannel administrative group.
Software Guide
Page 87
... bridge port 1/1 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 6-13 Switch_A> (enable) set port channel 1/1-4 desirable Port(s) 1/1-4 channel mode set to 100Mbps. Chapter 6 Configuring Fast EtherChannel and Gigabit EtherChannel EtherChannel Configuration Examples Figure 6-1 Example of a Fast EtherChannel Port Bundle 1/1 Switch A 1/2 1/3 1/4 3/1 3/2 Switch B 3/3 3/4 23923 Fast EtherChannel port bundle To configure a four-port...
... bridge port 1/1 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 6-13 Switch_A> (enable) set port channel 1/1-4 desirable Port(s) 1/1-4 channel mode set to 100Mbps. Chapter 6 Configuring Fast EtherChannel and Gigabit EtherChannel EtherChannel Configuration Examples Figure 6-1 Example of a Fast EtherChannel Port Bundle 1/1 Switch A 1/2 1/3 1/4 3/1 3/2 Switch B 3/3 3/4 23923 Fast EtherChannel port bundle To configure a four-port...
Software Guide
Page 88
...SX Gigabit Ethernet ports. 6-14 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 78-...PORTTOSTP:Port 3/4 joined bridge port 3/1-4 After the EtherChannel bundle is negotiated, enter the show port channel Port Status Channel Channel Neighbor Neighbor mode status device port...port 1/1 connected desirable channel WS-C4003 JAB023806(Sw 3/1 1/2 connected desirable channel WS-C4003 JAB023806(Sw 3/2 1/3 connected desirable channel WS-C4003 JAB023806(Sw 3/3 1/4 connected desirable channel WS-C4003 JAB023806(Sw 3/4 Switch_A...
...SX Gigabit Ethernet ports. 6-14 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 78-...PORTTOSTP:Port 3/4 joined bridge port 3/1-4 After the EtherChannel bundle is negotiated, enter the show port channel Port Status Channel Channel Neighbor Neighbor mode status device port...port 1/1 connected desirable channel WS-C4003 JAB023806(Sw 3/1 1/2 connected desirable channel WS-C4003 JAB023806(Sw 3/2 1/3 connected desirable channel WS-C4003 JAB023806(Sw 3/3 1/4 connected desirable channel WS-C4003 JAB023806(Sw 3/4 Switch_A...
Software Guide
Page 89
... bridge port 3/2 %PAGP-5-PORTTOSTP:Port 3/1 joined bridge port 3/1-2 %PAGP-5-PORTTOSTP:Port 3/2 joined bridge port 3/1-2 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 6-15 The switches will not negotiate an EtherChannel port bundle automatically in on Port(s) 2/1-2 channel mode set vlan 100 2/1-2 VLAN 100 modified. VLAN Mod/Ports 100 2/1-2 Switch_A...
... bridge port 3/2 %PAGP-5-PORTTOSTP:Port 3/1 joined bridge port 3/1-2 %PAGP-5-PORTTOSTP:Port 3/2 joined bridge port 3/1-2 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 6-15 The switches will not negotiate an EtherChannel port bundle automatically in on Port(s) 2/1-2 channel mode set vlan 100 2/1-2 VLAN 100 modified. VLAN Mod/Ports 100 2/1-2 Switch_A...
Software Guide
Page 90
... Channel Neighbor Neighbor mode status device port 2/1 connected on channel WS-C4003 JAB023806LN( 3/1 2/2 connected on channel WS-C4003 JAB023806LN( 3/2 Switch_A> (enable) Switch_B> (enable) show...command will show that prevents the port from channeling. 6-16 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 78-15486-01 Table 6-2 EtherChannel ...the switch will pass over the EtherChannel. Understanding the LACP Chapter 6 Configuring Fast EtherChannel and Gigabit EtherChannel Step 4 After the EtherChannel bundle is...
... Channel Neighbor Neighbor mode status device port 2/1 connected on channel WS-C4003 JAB023806LN( 3/1 2/2 connected on channel WS-C4003 JAB023806LN( 3/2 Switch_A> (enable) Switch_B> (enable) show...command will show that prevents the port from channeling. 6-16 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 78-15486-01 Table 6-2 EtherChannel ...the switch will pass over the EtherChannel. Understanding the LACP Chapter 6 Configuring Fast EtherChannel and Gigabit EtherChannel Step 4 After the EtherChannel bundle is...
Software Guide
Page 101
...link). Recalculation may not be desirable, especially if the added or removed link is removed from an aggregate link (port bundle), the bandwidth of the aggregate link increases or decreases. The formula for frames that have been forwarded using the old ...default port cost or changes resulting from nonparticipation in a switched network due to the cost of these states: • Blocking 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 7-5 When a switch port transitions directly from links that is in changes to...
...link). Recalculation may not be desirable, especially if the added or removed link is removed from an aggregate link (port bundle), the bandwidth of the aggregate link increases or decreases. The formula for frames that have been forwarded using the old ...default port cost or changes resulting from nonparticipation in a switched network due to the cost of these states: • Blocking 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 7-5 When a switch port transitions directly from links that is in changes to...
Software Guide
Page 122
...set a cost value from 1- 65535. 7-26 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 78-15486-01 Portvlancost. - Portcost. - Portvlancost. - EtherChannel computes the cost of a bundle using PVST+ spanning tree mode, all switches in the network must set the default port ... 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 your network is using a port speed of 10 Gb or over and the network is using the formula, AVERAGE_COST/NUM_PORT. You can ...
...set a cost value from 1- 65535. 7-26 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 78-15486-01 Portvlancost. - Portcost. - Portvlancost. - EtherChannel computes the cost of a bundle using PVST+ spanning tree mode, all switches in the network must set the default port ... 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 your network is using a port speed of 10 Gb or over and the network is using the formula, AVERAGE_COST/NUM_PORT. You can ...
Software Guide
Page 231
...Trunking Overview A trunk is a point-to configure Fast Ethernet and Gigabit Ethernet virtual LAN (VLAN) trunks on the Catalyst enterprise LAN switches. You can configure a trunk on a single Fast or Gigabit Ethernet port or on configuring VLANs, see Chapter ...6, "Configuring Fast EtherChannel and Gigabit EtherChannel." 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 11-1 Note For complete information on a Fast or Gigabit EtherChannel bundle. Trunks carry the traffic of these sections: • Understanding ...
...Trunking Overview A trunk is a point-to configure Fast Ethernet and Gigabit Ethernet virtual LAN (VLAN) trunks on the Catalyst enterprise LAN switches. You can configure a trunk on a single Fast or Gigabit Ethernet port or on configuring VLANs, see Chapter ...6, "Configuring Fast EtherChannel and Gigabit EtherChannel." 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 11-1 Note For complete information on a Fast or Gigabit EtherChannel bundle. Trunks carry the traffic of these sections: • Understanding ...
Software Guide
Page 239
...bundle as an 802.1Q trunk link, follow these steps: Step 1 Make sure that all ports are assigned to see Chapter 6, "Configuring Fast EtherChannel and Gigabit EtherChannel." Figure 11-1 IEEE 802.1Q Trunk over a Gigabit EtherChannel link between switches and routers, refer to the Layer 3 Switching Software Configuration Guide-Catalyst... 5000 Family, 4000 Family, 2926G Series, 2926 Series, 2948G, and 2980G Switches publication. 802.1Q Trunk over a ...
...bundle as an 802.1Q trunk link, follow these steps: Step 1 Make sure that all ports are assigned to see Chapter 6, "Configuring Fast EtherChannel and Gigabit EtherChannel." Figure 11-1 IEEE 802.1Q Trunk over a Gigabit EtherChannel link between switches and routers, refer to the Layer 3 Switching Software Configuration Guide-Catalyst... 5000 Family, 4000 Family, 2926G Series, 2926 Series, 2948G, and 2980G Switches publication. 802.1Q Trunk over a ...
Software Guide
Page 240
...> (enable) set trunk 2/3 desirable dot1q Port(s) 2/3-6 trunk mode set to use dot1q or negotiate encapsulation and are in the bundle. This example assumes that the neighboring ports on Switch B are configured to dot1q. Switch_A> (enable) %DTP-5-TRUNKPORTON:Port 2/3 has become dot1q trunk %DTP-5-TRUNKPORTON:Port 2/4 has ...2 Switch_B> (enable) set vlan 1 3/3-6 VLAN Mod/Ports 1 3/3-6 Switch_B> (enable) Configure one of the ports in management domain 11-10 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 78-15486-01
...> (enable) set trunk 2/3 desirable dot1q Port(s) 2/3-6 trunk mode set to use dot1q or negotiate encapsulation and are in the bundle. This example assumes that the neighboring ports on Switch B are configured to dot1q. Switch_A> (enable) %DTP-5-TRUNKPORTON:Port 2/3 has become dot1q trunk %DTP-5-TRUNKPORTON:Port 2/4 has ...2 Switch_B> (enable) set vlan 1 3/3-6 VLAN Mod/Ports 1 3/3-6 Switch_B> (enable) Configure one of the ports in management domain 11-10 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 78-15486-01
Software Guide
Page 241
... trunking. The system logging messages provide information about the formation of the switches by entering the show port channel and show trunk commands. Switch_B> (enable) Configure the ports on Switch B are in spanning tree forwarding state and not pruned 3/3 1-1005,...status of the EtherChannel bundle. 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 11-11 This example assumes that the neighboring ports on Switch A to negotiate a Gigabit EtherChannel bundle with the neighboring switch. Chapter 11 Configuring...
... trunking. The system logging messages provide information about the formation of the switches by entering the show port channel and show trunk commands. Switch_B> (enable) Configure the ports on Switch B are in spanning tree forwarding state and not pruned 3/3 1-1005,...status of the EtherChannel bundle. 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 11-11 This example assumes that the neighboring ports on Switch A to negotiate a Gigabit EtherChannel bundle with the neighboring switch. Chapter 11 Configuring...