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... 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
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... a baseline configuration of the Catalyst enterprise LAN switches. Configuring Ethernet and Fast Ethernet Switching Describes how to configure the Spanning Tree Protocol and explains how spanning tree works. Configuring the Switch IP Address and Default Gateway Describes how to configure Fast EtherChannel and and Gigabit EtherChannel Gigabit EtherChannel port bundles. Configuring Spanning Tree Describes how...
... a baseline configuration of the Catalyst enterprise LAN switches. Configuring Ethernet and Fast Ethernet Switching Describes how to configure the Spanning Tree Protocol and explains how spanning tree works. Configuring the Switch IP Address and Default Gateway Describes how to configure Fast EtherChannel and and Gigabit EtherChannel Gigabit EtherChannel port bundles. Configuring Spanning Tree Describes how...
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...has a buffer for incoming frames to allow connected devices to the switch through a two-port Gigabit EtherChannel trunk link providing 2-Gbps bandwidth. 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 5-5 and trunk-capable network interface cards...• Servers B and C, also with quick failover for the oversubscribed ports is receive desired and transmit on. The switch can bundle multiple oversubscribed ports into a Gigabit EtherChannel link to connect to a port in one oversubscribed port group and two are in...
...has a buffer for incoming frames to allow connected devices to the switch through a two-port Gigabit EtherChannel trunk link providing 2-Gbps bandwidth. 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 5-5 and trunk-capable network interface cards...• Servers B and C, also with quick failover for the oversubscribed ports is receive desired and transmit on. The switch can bundle multiple oversubscribed ports into a Gigabit EtherChannel link to connect to a port in one oversubscribed port group and two are in...
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Default Gigabit 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 Workstation 3 Server D Workstation 4 Server C Workstation 2 ... 4 Gigabit EtherChannel Disabled on all Gigabit Ethernet ports (auto mode) Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 5-6 78-15486-01
Default Gigabit 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 Workstation 3 Server D Workstation 4 Server C Workstation 2 ... 4 Gigabit EtherChannel Disabled on all Gigabit Ethernet ports (auto mode) Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 5-6 78-15486-01
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... port bundles on installing Catalyst 4500 series Fast Ethernet and Gigabit Ethernet modules, refer to the Catalyst 4500 Series Installation Guide. Note For complete syntax and usage information for EtherChannel, page 6-2 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software ...procedures in this chapter apply to Fast Ethernet and Gigabit Ethernet switch ports on switching modules and fixed-configuration switches, as well as to the Catalyst 4500 Series, Catalyst 2948G, and Catalyst 2980G Switches Command Reference. Note For complete information on the...
... port bundles on installing Catalyst 4500 series Fast Ethernet and Gigabit Ethernet modules, refer to the Catalyst 4500 Series Installation Guide. Note For complete syntax and usage information for EtherChannel, page 6-2 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software ...procedures in this chapter apply to Fast Ethernet and Gigabit Ethernet switch ports on switching modules and fixed-configuration switches, as well as to the Catalyst 4500 Series, Catalyst 2948G, and Catalyst 2980G Switches Command Reference. Note For complete information on the...
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... of channels is 126 for EtherChannel EtherChannel support is defined in IEEE 802.3ad, allows Cisco switches to manage Ethernet channeling with up to all ports in an EtherChannel bundle do not have to be on the Catalyst 4500 series switches, you can form an EtherChannel with devices that can be the same speed. Note...
... of channels is 126 for EtherChannel EtherChannel support is defined in IEEE 802.3ad, allows Cisco switches to manage Ethernet channeling with up to all ports in an EtherChannel bundle do not have to be on the Catalyst 4500 series switches, you can form an EtherChannel with devices that can be the same speed. Note...
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...You can change if the EtherChannel is torn down and renegotiated, or if the switch is reset or power cycled. Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 6-6 78-15486-01 EtherChannel administrative group numbers are ...specifying an administrative group number creates a new automatically numbered administrative group consisting of eight ports. In addition to configure an EtherChannel bundle using PAgP: • Creating an EtherChannel, page 6-7 • Defining an EtherChannel Administrative Group, page 6-7 • Setting ...
...You can change if the EtherChannel is torn down and renegotiated, or if the switch is reset or power cycled. Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 6-6 78-15486-01 EtherChannel administrative group numbers are ...specifying an administrative group number creates a new automatically numbered administrative group consisting of eight ports. In addition to configure an EtherChannel bundle using PAgP: • Creating an EtherChannel, page 6-7 • Defining an EtherChannel Administrative Group, page 6-7 • Setting ...
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... the EtherChannel administrative group on . In addition, a channel ID is not already assigned to admin group 57. When you create an EtherChannel port bundle, an administrative group is , a spanning tree topology change occurs and the ports must enter listening and learning mode before returning to identify groups of...group number is assigned automatically if one is assigned. The admin_group can define EtherChannel administrative groups manually to forwarding mode). 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 6-7
... the EtherChannel administrative group on . In addition, a channel ID is not already assigned to admin group 57. When you create an EtherChannel port bundle, an administrative group is , a spanning tree topology change occurs and the ports must enter listening and learning mode before returning to identify groups of...group number is assigned automatically if one is assigned. The admin_group can define EtherChannel administrative groups manually to forwarding mode). 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 6-7
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...cost for an EtherChannel, perform this task in a trunk channel. Console> (enable) Removing an EtherChannel Bundle To return a Fast EtherChannel or Gigabit EtherChannel bundle to its default configuration (you want to set port channel port_list mode auto must perform this task in ... an alternate cost for channel ID 768: Console> (enable) show port channel [mod_num[/port_num]] 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 6-9 Warning:channel cost may not be applicable if channel is set channel cost 768 12...
...cost for an EtherChannel, perform this task in a trunk channel. Console> (enable) Removing an EtherChannel Bundle To return a Fast EtherChannel or Gigabit EtherChannel bundle to its default configuration (you want to set port channel port_list mode auto must perform this task in ... an alternate cost for channel ID 768: Console> (enable) show port channel [mod_num[/port_num]] 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 6-9 Warning:channel cost may not be applicable if channel is set channel cost 768 12...
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...• 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. EtherChannel Configuration Examples Chapter 6 Configuring Fast EtherChannel and Gigabit... PAgP statistics by EtherChannel administrative group. Figure 6-1 shows two switches connected 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 Display EtherChannel PAgP...
...• 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. EtherChannel Configuration Examples Chapter 6 Configuring Fast EtherChannel and Gigabit... PAgP statistics by EtherChannel administrative group. Figure 6-1 shows two switches connected 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 Display EtherChannel PAgP...
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...) set port duplex 1/1-4 full Ports 1/1-4 set to negotiate a Fast EtherChannel bundle with the neighboring switch. The system logging messages provide information about the formation of the EtherChannel bundle. Switch_A> (enable) %PAGP-5-PORTFROMSTP:Port 1/1 left 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) Switch_B> (enable) set...
...) set port duplex 1/1-4 full Ports 1/1-4 set to negotiate a Fast EtherChannel bundle with the neighboring switch. The system logging messages provide information about the formation of the EtherChannel bundle. Switch_A> (enable) %PAGP-5-PORTFROMSTP:Port 1/1 left 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) Switch_B> (enable) set...
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... through four 1000BASE-SX Gigabit Ethernet ports. 6-14 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 78-15486-01 Switch_A> (enable) show port channel Port Status Channel Channel ...:Port 3/2 joined bridge port 3/1-4 %PAGP-5-PORTTOSTP:Port 3/3 joined bridge port 3/1-4 %PAGP-5-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 3/1 connected auto channel WS-C4012 009979082(Sw 1/1...
... through four 1000BASE-SX Gigabit Ethernet ports. 6-14 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 78-15486-01 Switch_A> (enable) show port channel Port Status Channel Channel ...:Port 3/2 joined bridge port 3/1-4 %PAGP-5-PORTTOSTP:Port 3/3 joined bridge port 3/1-4 %PAGP-5-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 3/1 connected auto channel WS-C4012 009979082(Sw 1/1...
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... port 3/1-2 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 6-15 VLAN Mod/Ports 100 2/1-2 Switch_A> (enable) Switch_B> (enable) set vlan 100 2/1-2 VLAN 100 modified. The switches will not negotiate an EtherChannel port bundle automatically in on . Switch_A...to on mode. If you configure ports on, you must configure the ports on both ends of the EtherChannel bundle on Switch A and Switch B have the same port configuration, such as on . Chapter 6 Configuring Fast EtherChannel and Gigabit EtherChannel EtherChannel ...
... port 3/1-2 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 6-15 VLAN Mod/Ports 100 2/1-2 Switch_A> (enable) Switch_B> (enable) set vlan 100 2/1-2 VLAN 100 modified. The switches will not negotiate an EtherChannel port bundle automatically in on . Switch_A...to on mode. If you configure ports on, you must configure the ports on both ends of the EtherChannel bundle on Switch A and Switch B have the same port configuration, such as on . Chapter 6 Configuring Fast EtherChannel and Gigabit EtherChannel EtherChannel ...
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... the active and passive channel modes. Understanding the LACP Chapter 6 Configuring Fast EtherChannel and Gigabit EtherChannel Step 4 After the EtherChannel bundle is connected to another port group in on off by setting the port channel mode to on , the show port channel command... will pass over the EtherChannel. Table 6-2 describes the EtherChannel modes 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 Modes That Use LACP Mode on mode.
... the active and passive channel modes. Understanding the LACP Chapter 6 Configuring Fast EtherChannel and Gigabit EtherChannel Step 4 After the EtherChannel bundle is connected to another port group in on off by setting the port channel mode to on , the show port channel command... will pass over the EtherChannel. Table 6-2 describes the EtherChannel modes 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 Modes That Use LACP Mode on mode.
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These changes in one of these states: • Blocking 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 7-5 Therefore, the aggregated port uses the same port cost parameters as a standalone port. They must wait ... Understanding Spanning Tree Port States Topology changes can also manually assign port costs between 1-200,000,000. When a switch port transitions directly from an aggregate link (port bundle), the bandwidth of port when you use the long method to the cost of the spanning tree topology. Because ...
These changes in one of these states: • Blocking 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 7-5 Therefore, the aggregated port uses the same port cost parameters as a standalone port. They must wait ... Understanding Spanning Tree Port States Topology changes can also manually assign port costs between 1-200,000,000. When a switch port transitions directly from an aggregate link (port bundle), the bandwidth of port when you use the long method to the cost of the spanning tree topology. Because ...
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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 There are attached to slower media. You should assign lower numbers to ports that are ...frames. The default port cost mode in privileged mode: Task Configure the default port cost mode. EtherChannel computes the cost of a bundle using PVST+ spanning tree mode, all switches in the network must set to use long format default values. Command set spantree defaultcostmode {short | long} This example shows ...
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 There are attached to slower media. You should assign lower numbers to ports that are ...frames. The default port cost mode in privileged mode: Task Configure the default port cost mode. EtherChannel computes the cost of a bundle using PVST+ spanning tree mode, all switches in the network must set to use long format default values. Command set spantree defaultcostmode {short | long} This example shows ...
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...The following sections describe how VLAN trunks work on a Fast or Gigabit EtherChannel bundle. You can configure a trunk on a single Fast or Gigabit Ethernet port or on the Catalyst enterprise LAN switches. Note For complete syntax and usage information for the commands used in this ...chapter, refer to configure Fast Ethernet and Gigabit Ethernet virtual LAN (VLAN) trunks on the Catalyst enterprise LAN switches. The Catalyst 4500 series, 2948G, and 2980G switches support IEEE 802.1Q-802.1Q trunking encapsulation. 11 C H A P T E R Configuring VLAN Trunks on Fast...
...The following sections describe how VLAN trunks work on a Fast or Gigabit EtherChannel bundle. You can configure a trunk on a single Fast or Gigabit Ethernet port or on the Catalyst enterprise LAN switches. Note For complete syntax and usage information for the commands used in this ...chapter, refer to configure Fast Ethernet and Gigabit Ethernet virtual LAN (VLAN) trunks on the Catalyst enterprise LAN switches. The Catalyst 4500 series, 2948G, and 2980G switches support IEEE 802.1Q-802.1Q trunking encapsulation. 11 C H A P T E R Configuring VLAN Trunks on Fast...
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...bundle, and then configure the EtherChannel bundle as an 802.1Q trunk link, follow these steps: Step 1 Make sure that all ports are assigned to the same VLAN. Switch_A> (enable) set vlan 1 2/3-6 VLAN Mod/Ports 1 2/3-6 Switch_A> (enable) 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches...used as members of configuring trunk links 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 Gigabit ...
...bundle, and then configure the EtherChannel bundle as an 802.1Q trunk link, follow these steps: Step 1 Make sure that all ports are assigned to the same VLAN. Switch_A> (enable) set vlan 1 2/3-6 VLAN Mod/Ports 1 2/3-6 Switch_A> (enable) 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches...used as members of configuring trunk links 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 Gigabit ...
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...Gigabit Ethernet Ports Step 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 the EtherChannel bundle to all of the 802.1Q trunk. The configuration is negotiated, enter the show trunk Port Mode Encapsulation 2/3 desirable dot1q 2/4 desirable dot1q 2/5 desirable dot1q ...-4094 1-1005, 1025-4094 1-1005, 1025-4094 1-1005, 1025-4094 Port Vlans allowed and active in management domain 11-10 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 78-15486-01
...Gigabit Ethernet Ports Step 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 the EtherChannel bundle to all of the 802.1Q trunk. The configuration is negotiated, enter the show trunk Port Mode Encapsulation 2/3 desirable dot1q 2/4 desirable dot1q 2/5 desirable dot1q ...-4094 1-1005, 1025-4094 1-1005, 1025-4094 1-1005, 1025-4094 Port Vlans allowed and active in management domain 11-10 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 78-15486-01
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...1025-4094 3/6 1-1005, 1025-4094 Switch_B> (enable) Confirm the channeling and trunking status of the EtherChannel bundle. 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 11-11 Switch_A> (enable) show port channel No ports channelling Switch_A> (enable... show port channel and show trunk commands. This example assumes that the neighboring ports on Switch A to negotiate a Gigabit EtherChannel bundle with the neighboring switch. Switch_A> (enable) Switch_B> (enable) show port channel No ports channelling Switch_B> (...
...1025-4094 3/6 1-1005, 1025-4094 Switch_B> (enable) Confirm the channeling and trunking status of the EtherChannel bundle. 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 11-11 Switch_A> (enable) show port channel No ports channelling Switch_A> (enable... show port channel and show trunk commands. This example assumes that the neighboring ports on Switch A to negotiate a Gigabit EtherChannel bundle with the neighboring switch. Switch_A> (enable) Switch_B> (enable) show port channel No ports channelling Switch_B> (...