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... 6-6 Creating an EtherChannel 6-7 Defining an EtherChannel Administrative Group 6-7 Setting the EtherChannel Spanning Tree Port Cost 6-8 Setting 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
... 6-6 Creating an EtherChannel 6-7 Defining an EtherChannel Administrative Group 6-7 Setting the EtherChannel Spanning Tree Port Cost 6-8 Setting 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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...Spanning Tree-Related Information for EtherChannels 6-22 7 C H A P T E R Configuring Spanning Tree 7-1 Understanding How STPs Work 7-2 Understanding How a Topology Is Created 7-2 Understanding How a Switch or Port Becomes the Root Switch or Root Port 7-3 Understanding BPDUs 7-4 Calculating and Assigning Port Costs 7-4 Understanding Spanning Tree Port... Works 7-14 Rapid Spanning Tree Protocol 7-16 MST-to-SST Interoperability 7-17 Common Spanning Tree 7-18 MST Instances 7-18 MST Configuration 7-18 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release...
...Spanning Tree-Related Information for EtherChannels 6-22 7 C H A P T E R Configuring Spanning Tree 7-1 Understanding How STPs Work 7-2 Understanding How a Topology Is Created 7-2 Understanding How a Switch or Port Becomes the Root Switch or Root Port 7-3 Understanding BPDUs 7-4 Calculating and Assigning Port Costs 7-4 Understanding Spanning Tree Port... Works 7-14 Rapid Spanning Tree Protocol 7-16 MST-to-SST Interoperability 7-17 Common Spanning Tree 7-18 MST Instances 7-18 MST Configuration 7-18 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release...
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...PVST+ Bridge ID Priority 7-23 Configuring the PVST+ Port Cost 7-25 Configuring PVST+ Port Priority 7-25 Configuring the PVST+ Default Port Cost Mode 7-26 Configuring the PVST+ Port VLAN Cost 7-26 Configuring the PVST+ Port VLAN Priority 7-27 Disabling the PVST+ Mode on ... VLANs to an MST Instance 7-54 Configuring Spanning Tree BPDU Skewing 7-57 Configuring Spanning Tree PortFast, BPDU Guard, BPDU Filter, UplinkFast, BackboneFast, and Loop Guard 8-1 Understanding How PortFast Works 8-1 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 vii
...PVST+ Bridge ID Priority 7-23 Configuring the PVST+ Port Cost 7-25 Configuring PVST+ Port Priority 7-25 Configuring the PVST+ Default Port Cost Mode 7-26 Configuring the PVST+ Port VLAN Cost 7-26 Configuring the PVST+ Port VLAN Priority 7-27 Disabling the PVST+ Mode on ... VLANs to an MST Instance 7-54 Configuring Spanning Tree BPDU Skewing 7-57 Configuring Spanning Tree PortFast, BPDU Guard, BPDU Filter, UplinkFast, BackboneFast, and Loop Guard 8-1 Understanding How PortFast Works 8-1 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 vii
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... 25-2 26 C H A P T E R Configuring SPAN and RSPAN 26-1 Understanding How SPAN and RSPAN Work 26-1 SPAN Session 26-1 Destination Port 26-2 Source Port 26-2 Reflector Port 26-3 Ingress SPAN 26-3 Egress SPAN 26-3 VSPAN 26-3 Trunk VLAN Filtering 26-4 SPAN Traffic 26-4 SPAN and RSPAN Session Limits 26-4 Configuring SPAN 26-4 Understanding How SPAN Works 26-4 SPAN Configuration Guidelines 26-5 Configuring SPAN 26-6 Configuring RSPAN...
... 25-2 26 C H A P T E R Configuring SPAN and RSPAN 26-1 Understanding How SPAN and RSPAN Work 26-1 SPAN Session 26-1 Destination Port 26-2 Source Port 26-2 Reflector Port 26-3 Ingress SPAN 26-3 Egress SPAN 26-3 VSPAN 26-3 Trunk VLAN Filtering 26-4 SPAN Traffic 26-4 SPAN and RSPAN Session Limits 26-4 Configuring SPAN 26-4 Understanding How SPAN Works 26-4 SPAN Configuration Guidelines 26-5 Configuring SPAN 26-6 Configuring RSPAN...
Software Guide
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... EtherChannel Gigabit EtherChannel port bundles. Configuring Ethernet and Fast Ethernet Switching Describes how to perform a baseline configuration of the Catalyst enterprise LAN switches. Configuring Fast EtherChannel Describes how to configure the Spanning Tree Protocol and explains how spanning tree works. Filter, UplinkFast, BackboneFast, and Loop Guard 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide...
... EtherChannel Gigabit EtherChannel port bundles. Configuring Ethernet and Fast Ethernet Switching Describes how to perform a baseline configuration of the Catalyst enterprise LAN switches. Configuring Fast EtherChannel Describes how to configure the Spanning Tree Protocol and explains how spanning tree works. Filter, UplinkFast, BackboneFast, and Loop Guard 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide...
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... the IP Permit List Describes how to configure Cisco Group Management Protocol (CGMP), Internet Group Management Protocol (IGMP) snooping, and GARP Multicast Registration Protocol (GMRP) on the switch. Configuring SNMP Describes how to configure the Switched Port Analyzer (SPAN) and Remote SPAN (RSPAN) on the switch. Configuring SPAN and RSPAN Describes how to configure the Simple Network Management...
... the IP Permit List Describes how to configure Cisco Group Management Protocol (CGMP), Internet Group Management Protocol (IGMP) snooping, and GARP Multicast Registration Protocol (GMRP) on the switch. Configuring SNMP Describes how to configure the Switched Port Analyzer (SPAN) and Remote SPAN (RSPAN) on the switch. Configuring SPAN and RSPAN Describes how to configure the Simple Network Management...
Software Guide
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... (me1) Interface IP Address, page 3-6 • Configuring Default Gateways, page 3-6 • Configuring the SLIP (sl0) Interface on the Catalyst enterprise LAN switches. The out-of-band management interfaces (me1 and sl0) are not connected to the switching fabric and participates in any of a normal switch port, such as spanning tree, Cisco Discovery Protocol (CDP), and VLAN membership.
... (me1) Interface IP Address, page 3-6 • Configuring Default Gateways, page 3-6 • Configuring the SLIP (sl0) Interface on the Catalyst enterprise LAN switches. The out-of-band management interfaces (me1 and sl0) are not connected to the switching fabric and participates in any of a normal switch port, such as spanning tree, Cisco Discovery Protocol (CDP), and VLAN membership.
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...[/port_num]] 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 4-3 Verify that the port name is configured. Chapter 4 Configuring Ethernet and Fast Ethernet Switching Configuring Ethernet and Fast Ethernet Ports Table 4-1 Ethernet and Fast Ethernet Default Configurations Feature Port enable state Port name Port priority Duplex mode Native VLAN Spanning tree port cost Fast EtherChannel Default...
...[/port_num]] 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 4-3 Verify that the port name is configured. Chapter 4 Configuring Ethernet and Fast Ethernet Switching Configuring Ethernet and Fast Ethernet Ports Table 4-1 Ethernet and Fast Ethernet Default Configurations Feature Port enable state Port name Port priority Duplex mode Native VLAN Spanning tree port cost Fast EtherChannel Default...
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... transmit (Tx) • All others: Flow control set to off for receive (Rx) and desired for transmit (Tx) Port negotiation Enabled Spanning Tree Protocol Enabled for VLAN 1 Native VLAN VLAN 1 Spanning tree port cost 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
... transmit (Tx) • All others: Flow control set to off for receive (Rx) and desired for transmit (Tx) Port negotiation Enabled Spanning Tree Protocol Enabled for VLAN 1 Native VLAN VLAN 1 Spanning tree port cost 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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.... PAgP is a Cisco-proprietary protocol that conform to manage Ethernet channeling with devices that can form an EtherChannel with adjoining switches. Note MAC address notification settings are ignored on page 6-16. To use PAgP, see the "Understanding the PAgP" section on Fast Ethernet and Gigabit Ethernet Ports." Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration...
.... PAgP is a Cisco-proprietary protocol that conform to manage Ethernet channeling with devices that can form an EtherChannel with adjoining switches. Note MAC address notification settings are ignored on page 6-16. To use PAgP, see the "Understanding the PAgP" section on Fast Ethernet and Gigabit Ethernet Ports." Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration...
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...PAgP on a module. • PAgP and LACP are no longer suspended. Note Switches can change the protocol at any ) is physically connected but never joined spanning tree. If the port is part of a channel must use the same protocol; Normal LACP behavior is ...port is set the channel mode to display the channel even though all its internal channels list; To get disabled, LACP does not remove the channel; With LACP, when all ports in the EtherChannel. • You cannot assign a port to full duplex. 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches...
...PAgP on a module. • PAgP and LACP are no longer suspended. Note Switches can change the protocol at any ) is physically connected but never joined spanning tree. If the port is part of a channel must use the same protocol; Normal LACP behavior is ...port is set the channel mode to display the channel even though all its internal channels list; To get disabled, LACP does not remove the channel; With LACP, when all ports in the EtherChannel. • You cannot assign a port to full duplex. 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches...
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... features: • An EtherChannel will not form if protocol filtering is set differently on the ports. • Cisco Discovery Protocol (CDP) runs on the physical port even after the port is added to a channel. • VLAN Trunking Protocol (VTP) and Dual Ring Protocol ... the ports in the EtherChannel. Configuring ports in an EtherChannel in different trunk modes can adversely affect switch performance. • Ports with different dynamic configurations cannot form a channel. • If one of the ports is a SPAN destination port. • An EtherChannel will not form with ports that...
... features: • An EtherChannel will not form if protocol filtering is set differently on the ports. • Cisco Discovery Protocol (CDP) runs on the physical port even after the port is added to a channel. • VLAN Trunking Protocol (VTP) and Dual Ring Protocol ... the ports in the EtherChannel. Configuring ports in an EtherChannel in different trunk modes can adversely affect switch performance. • Ports with different dynamic configurations cannot form a channel. • If one of the ports is a SPAN destination port. • An EtherChannel will not form with ports that...
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...on mode, a channel is then added to the spanning tree as port speed, trunking state, native VLAN, and so on , off auto desirable Description Forces the port to a channel misconfiguration. If the peer port is configured. Use the silent keyword when you are...packets are four user-configurable channel modes: on . 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 6-5 Places a port into a passive negotiating state, in desirable mode. (Default) Places a port into a channel. An example of a silent partner is not ...
...on mode, a channel is then added to the spanning tree as port speed, trunking state, native VLAN, and so on , off auto desirable Description Forces the port to a channel misconfiguration. If the peer port is configured. Use the silent keyword when you are...packets are four user-configurable channel modes: on . 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 6-5 Places a port into a passive negotiating state, in desirable mode. (Default) Places a port into a channel. An example of a silent partner is not ...
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..., page 6-7 • Defining an EtherChannel Administrative Group, page 6-7 • Setting the 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... Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 6-6 78-15486-01 You can form a single EtherChannel. Configuring EtherChannel Using PAgP Chapter 6 Configuring Fast EtherChannel and Gigabit EtherChannel Ports can form an EtherChannel when...
..., page 6-7 • Defining an EtherChannel Administrative Group, page 6-7 • Setting the 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... Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 6-6 78-15486-01 You can form a single EtherChannel. Configuring EtherChannel Using PAgP Chapter 6 Configuring Fast EtherChannel and Gigabit EtherChannel Ports can form an EtherChannel when...
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... is not already assigned to forwarding mode). 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 6-7 When you create an EtherChannel, an administrative group number is assigned automatically if one is , a spanning tree topology change occurs and the ports must enter listening and learning mode before returning to the specified...
... is not already assigned to forwarding mode). 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 6-7 When you create an EtherChannel, an administrative group number is assigned automatically if one is , a spanning tree topology change occurs and the ports must enter listening and learning mode before returning to the specified...
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... silent 0 Admin Port Device-ID Port-ID Platform group 50 3/5 50 3/6 Console> (enable) Setting the EtherChannel Spanning Tree Port Cost To set the port cost. This example shows how to set the spanning tree port cost for an ...port channel port_list admin_group show channel group 20 Admin Port Status Channel Channel group Mode id 20 1/1 notconnect on 768 20 1/2 connected 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) Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches...
... silent 0 Admin Port Device-ID Port-ID Platform group 50 3/5 50 3/6 Console> (enable) Setting the EtherChannel Spanning Tree Port Cost To set the port cost. This example shows how to set the spanning tree port cost for an ...port channel port_list admin_group show channel group 20 Admin Port Status Channel Channel group Mode id 20 1/1 notconnect on 768 20 1/2 connected 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) Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches...
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... This example shows how to 12. Console> (enable) Setting the EtherChannel Spanning Tree Port VLAN Cost The spanning tree port VLAN cost provides 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 Chapter 6 Configuring Fast EtherChannel and Gigabit EtherChannel...
... This example shows how to 12. Console> (enable) Setting the EtherChannel Spanning Tree Port VLAN Cost The spanning tree port VLAN cost provides 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 Chapter 6 Configuring Fast EtherChannel and Gigabit EtherChannel...
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...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 Switch_A> (enable) show port channel Port Status Channel Channel Neighbor Neighbor mode status device port 2/1 connected on channel WS-C4003 JAB023806LN...connected to handle channeling, use LACP. Spanning tree loops can occur, and eventually the switch will pass over the EtherChannel. With the on mode, a usable EtherChannel exists only when a port group in on one end of the ...
...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 Switch_A> (enable) show port channel Port Status Channel Channel Neighbor Neighbor mode status device port 2/1 connected on channel WS-C4003 JAB023806LN...connected to handle channeling, use LACP. Spanning tree loops can occur, and eventually the switch will pass over the EtherChannel. With the on mode, a usable EtherChannel exists only when a port group in on one end of the ...
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... page 6-18 • Specifying the System Priority, page 6-19 • Specifying the Port Priority, page 6-19 • Specifying an Administrative Key Value, page 6-19 •...Traffic Utilization, page 6-21 • Disabling an EtherChannel, page 6-22 • Displaying Spanning Tree-Related Information for EtherChannels, page 6-22 Note Before you configure the EtherChannel, see the...This example shows how to specify the LACP protocol for all modules. 6-18 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 78-15486-01 Console> (enable) Use the...
... page 6-18 • Specifying the System Priority, page 6-19 • Specifying the Port Priority, page 6-19 • Specifying an Administrative Key Value, page 6-19 •...Traffic Utilization, page 6-21 • Disabling an EtherChannel, page 6-22 • Displaying Spanning Tree-Related Information for EtherChannels, page 6-22 Note Before you configure the EtherChannel, see the...This example shows how to specify the LACP protocol for all modules. 6-18 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 78-15486-01 Console> (enable) Use the...
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... be on some switches and disable it uses all intermediate values internally as a private VLAN port, and vice versa. • A source SPAN port can belong to a private VLAN. • You can use VLAN-based SPAN (VSPAN) to span primary, isolated, and... community VLANs together, or use the default bridge priorities to the trunk and the private VLAN has not been removed from the trunks for security reasons. 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches...
... be on some switches and disable it uses all intermediate values internally as a private VLAN port, and vice versa. • A source SPAN port can belong to a private VLAN. • You can use VLAN-based SPAN (VSPAN) to span primary, isolated, and... community VLANs together, or use the default bridge priorities to the trunk and the private VLAN has not been removed from the trunks for security reasons. 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches...