Software Guide
Page 5
... Port Timeout Periods 5-9 Checking Gigabit Ethernet Port Connectivity 5-10 Configuring Fast EtherChannel and Gigabit EtherChannel 6-1 Understanding How EtherChannel Works 6-1 EtherChannel Overview 6-2 Understanding Frame Distribution 6-2 Hardware Support for EtherChannel 6-2 PAgP and LACP 6-2 EtherChannel Configuration Guidelines and Restrictions 6-3 Guidelines for Configuring a Port 6-3 Guidelines for Configuring VLANs and Trunks 6-4 EtherChannel Interaction with other Features...
... Port Timeout Periods 5-9 Checking Gigabit Ethernet Port Connectivity 5-10 Configuring Fast EtherChannel and Gigabit EtherChannel 6-1 Understanding How EtherChannel Works 6-1 EtherChannel Overview 6-2 Understanding Frame Distribution 6-2 Hardware Support for EtherChannel 6-2 PAgP and LACP 6-2 EtherChannel Configuration Guidelines and Restrictions 6-3 Guidelines for Configuring a Port 6-3 Guidelines for Configuring VLANs and Trunks 6-4 EtherChannel Interaction with other Features...
Software Guide
Page 10
... Trunks on Fast Ethernet and Gigabit Ethernet Ports 11-1 Understanding How VLAN Trunks Work 11-1 Trunking Overview 11-1 Trunking Modes and Encapsulation Types 11-2 Trunking Support 11-3 802.1Q Trunk Restrictions 11-4 Default Trunk Configuration 11-5 Configuring a Trunk Link 11-5 Configuring an 802.1Q Trunk 11-5 Defining the Allowed VLANs on...
... Trunks on Fast Ethernet and Gigabit Ethernet Ports 11-1 Understanding How VLAN Trunks Work 11-1 Trunking Overview 11-1 Trunking Modes and Encapsulation Types 11-2 Trunking Support 11-3 802.1Q Trunk Restrictions 11-4 Default Trunk Configuration 11-5 Configuring a Trunk Link 11-5 Configuring an 802.1Q Trunk 11-5 Defining the Allowed VLANs on...
Software Guide
Page 16
... from the CLI 24-14 Using CiscoWorks2000 24-17 25 C H A P T E R Configuring RMON 25-1 Understanding How RMON Works 25-1 Enabling RMON 25-2 Viewing RMON Data 25-2 Supported RMON and RMON2 MIB Objects 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...
... from the CLI 24-14 Using CiscoWorks2000 24-17 25 C H A P T E R Configuring RMON 25-1 Understanding How RMON Works 25-1 Enabling RMON 25-2 Viewing RMON Data 25-2 Supported RMON and RMON2 MIB Objects 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...
Software Guide
Page 17
...C H A P T E R 78-15486-01 Configuring a Login Banner 27-4 Clearing the Login Banner 27-5 Enabling or Disabling the "Cisco Systems Console" Telnet Login Banner 27-5 Defining and Using Command Aliases 27-6 Defining and Using IP Aliases 27-7 Configuring Permanent and Static ARP... a Reset at a Specific Time 27-10 Scheduling a Reset Within a Specified Amount of Time 27-11 Generating System Status Reports for Tech Support 27-12 Power Management 28-1 Understanding How Power Management Works on the Catalyst 4500 Series Switches 28-1 Power Management Overview 28-2 Understanding Power Management...
...C H A P T E R 78-15486-01 Configuring a Login Banner 27-4 Clearing the Login Banner 27-5 Enabling or Disabling the "Cisco Systems Console" Telnet Login Banner 27-5 Defining and Using Command Aliases 27-6 Defining and Using IP Aliases 27-7 Configuring Permanent and Static ARP... a Reset at a Specific Time 27-10 Scheduling a Reset Within a Specified Amount of Time 27-11 Generating System Status Reports for Tech Support 27-12 Power Management 28-1 Understanding How Power Management Works on the Catalyst 4500 Series Switches 28-1 Power Management Overview 28-2 Understanding Power Management...
Software Guide
Page 28
... of interactive, networked services that let you can self-register on Cisco.com. Cisco.com provides a broad range of your comments to the technical support resources on the Cisco TAC website, including TAC tools and utilities. Obtaining Technical Assistance Cisco provides Cisco.com, which includes the Cisco Technical Assistance Center (TAC) website, as a starting point for online...
... of interactive, networked services that let you can self-register on Cisco.com. Cisco.com provides a broad range of your comments to the technical support resources on the Cisco TAC website, including TAC tools and utilities. Obtaining Technical Assistance Cisco provides Cisco.com, which includes the Cisco Technical Assistance Center (TAC) website, as a starting point for online...
Software Guide
Page 29
... hours to restore service to the technical support resources on the Cisco TAC website. To obtain a directory of support are assigned when severe network degradation significantly impacts business operations. If you choose depends on the Cisco TAC website require a Cisco.com login ID and password. Cisco TAC Website The Cisco TAC website provides online documents and tools...
... hours to restore service to the technical support resources on the Cisco TAC website. To obtain a directory of support are assigned when severe network degradation significantly impacts business operations. If you choose depends on the Cisco TAC website require a Cisco.com login ID and password. Cisco TAC Website The Cisco TAC website provides online documents and tools...
Software Guide
Page 30
... Additional Publications and Information Preface Before calling, please check with your network operations center to determine the Cisco support services to which your product serial number. Obtaining Additional Publications and Information Information about Internet business strategies for example,... SMARTnet, SMARTnet Onsite, or Network Supported Accounts (NSA). You can access the Internet Protocol Journal at this URL: http://www.cisco.com/en/US/learning/le31/learning_recommended_training_list.html Catalyst 4500 Series, Catalyst 2948G...
... Additional Publications and Information Preface Before calling, please check with your network operations center to determine the Cisco support services to which your product serial number. Obtaining Additional Publications and Information Information about Internet business strategies for example,... SMARTnet, SMARTnet Onsite, or Network Supported Accounts (NSA). You can access the Internet Protocol Journal at this URL: http://www.cisco.com/en/US/learning/le31/learning_recommended_training_list.html Catalyst 4500 Series, Catalyst 2948G...
Software Guide
Page 37
... Guide-Release 8.1 2-3 unix_host% telnet Catalyst_1 Trying 172.16.10.10... Connected to change the configuration. Use privileged-mode commands to Catalyst_1. Cisco Systems Console Enter password: After you successfully connect to the switch using the IP address or the DNS host name of operation: • ... or enter privileged mode to change the system configuration. Note For complete information on page 20-6. Switch CLI Command Modes The switch CLI supports two modes of the switch. (You must first set the IP address (and in order to a switch with an IP address and...
... Guide-Release 8.1 2-3 unix_host% telnet Catalyst_1 Trying 172.16.10.10... Connected to change the configuration. Use privileged-mode commands to Catalyst_1. Cisco Systems Console Enter password: After you successfully connect to the switch using the IP address or the DNS host name of operation: • ... or enter privileged mode to change the system configuration. Note For complete information on page 20-6. Switch CLI Command Modes The switch CLI supports two modes of the switch. (You must first set the IP address (and in order to a switch with an IP address and...
Software Guide
Page 39
...-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 2-5 Moves the cursor back one word. Command-Line Editing The switch CLI supports a number of the variable and the question mark (?). Table 2-1 lists the keystrokes you can use the partial-keyword-lookup function, enter ? Ctrl-F or the Right...
...-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 2-5 Moves the cursor back one word. Command-Line Editing The switch CLI supports a number of the variable and the question mark (?). Table 2-1 lists the keystrokes you can use the partial-keyword-lookup function, enter ? Ctrl-F or the Right...
Software Guide
Page 47
...obtains a "leased" IP address for obtaining an IP address from a DCHP server, the switch processes all of time. Table 3-1 shows the supported DHCP options. Other options that are contained in the message. There are three methods for a specified period of the switch ports are online.... In addition to 10 seconds after all the supported options that are specified in the DHCPDISCOVER message. The switch always requests an infinite lease time in the DHCPOFFER message are ignored. ...
...obtains a "leased" IP address for obtaining an IP address from a DCHP server, the switch processes all of time. Table 3-1 shows the supported DHCP options. Other options that are contained in the message. There are three methods for a specified period of the switch ports are online.... In addition to 10 seconds after all the supported options that are specified in the DHCPDISCOVER message. The switch always requests an infinite lease time in the DHCPOFFER message are ignored. ...
Software Guide
Page 57
... LAN switches: • Ethernet Overview, page 4-1 • Switching Frames Between Segments, page 4-2 • Building the Address Table, page 4-2 Ethernet Overview The Catalyst enterprise LAN switches support simultaneous, parallel conversations between Ethernet segments. Note For complete syntax and usage information for the commands used in this chapter, refer to the Catalyst 4500...
... LAN switches: • Ethernet Overview, page 4-1 • Switching Frames Between Segments, page 4-2 • Building the Address Table, page 4-2 Ethernet Overview The Catalyst enterprise LAN switches support simultaneous, parallel conversations between Ethernet segments. Note For complete syntax and usage information for the commands used in this chapter, refer to the Catalyst 4500...
Software Guide
Page 58
... Guide-Release 8.1 4-2 78-15486-01 Because the major bottleneck in both directions simultaneously, effective Ethernet bandwidth for each port on the switches (Gigabit Ethernet ports support only full duplex). If two stations establish a session that uses a significant level of bandwidth, the network performance of the same virtual LAN (VLAN) except the...
... Guide-Release 8.1 4-2 78-15486-01 Because the major bottleneck in both directions simultaneously, effective Ethernet bandwidth for each port on the switches (Gigabit Ethernet ports support only full duplex). If two stations establish a session that uses a significant level of bandwidth, the network performance of the same virtual LAN (VLAN) except the...
Software Guide
Page 67
... is 1000 and duplex mode is enabled by default. You cannot disable port negotiation on both ends of the link are supported: • WS-X4412-2GB-T This 1000BASE-T 14-port module provides 2 dedicated uplink module ports (GBIC) and 12 oversubscribed ports (possible blocking...at each configuration. Near End refers to exchange flow-control parameters, remote fault information, and duplex information (even though Cisco Gigabit Ethernet ports only support full-duplex mode). Note Port negotiation is used to the local Gigabit EtherChannel module port. 2. Gigabit Ethernet port negotiation...
... is 1000 and duplex mode is enabled by default. You cannot disable port negotiation on both ends of the link are supported: • WS-X4412-2GB-T This 1000BASE-T 14-port module provides 2 dedicated uplink module ports (GBIC) and 12 oversubscribed ports (possible blocking...at each configuration. Near End refers to exchange flow-control parameters, remote fault information, and duplex information (even though Cisco Gigabit Ethernet ports only support full-duplex mode). Note Port negotiation is used to the local Gigabit EtherChannel module port. 2. Gigabit Ethernet port negotiation...
Software Guide
Page 69
... 2-Gbps of traffic over channeled connections to and from the switch (Tx and Rx) while maintaining an average of 250 Mbps for module WS-X4448-GB-RJ45. Each workstation connects to a port in one port in each direction while averaging 250 Mbps for the oversubscribed ports is ...connected to the oversubscribed port group and can burst up to servers and hosts that support the Port Aggregation Protocol (PAgP). and trunk-capable NICs, share the oversubscribed port groups that are grouped for each connected port (500 Mbps...
... 2-Gbps of traffic over channeled connections to and from the switch (Tx and Rx) while maintaining an average of 250 Mbps for module WS-X4448-GB-RJ45. Each workstation connects to a port in one port in each direction while averaging 250 Mbps for the oversubscribed ports is ...connected to the oversubscribed port group and can burst up to servers and hosts that support the Port Aggregation Protocol (PAgP). and trunk-capable NICs, share the oversubscribed port groups that are grouped for each connected port (500 Mbps...
Software Guide
Page 75
... Using LACP, page 6-18 Understanding How EtherChannel Works These sections describe how EtherChannel works: • EtherChannel Overview, page 6-2 • Understanding Frame Distribution, page 6-2 • Hardware Support for the commands used in this chapter, refer to the Catalyst 4500 Series, Catalyst 2948G, and Catalyst 2980G Switches Command Reference. CH A P T E R 6 Configuring Fast EtherChannel...
... Using LACP, page 6-18 Understanding How EtherChannel Works These sections describe how EtherChannel works: • EtherChannel Overview, page 6-2 • Understanding Frame Distribution, page 6-2 • Hardware Support for the commands used in this chapter, refer to the Catalyst 4500 Series, Catalyst 2948G, and Catalyst 2980G Switches Command Reference. CH A P T E R 6 Configuring Fast EtherChannel...
Software Guide
Page 76
... a switch and a router, a host, or another switch. Ports in an EtherChannel must be on Cisco switches and those switches released by the spanning tree feature, the maximum supported number of any port in the channel as a trunk. All ports in an EtherChannel bundle do not ...on PAgP and LACP EtherChannel ports. The configuration is 126 for EtherChannel EtherChannel support is not configurable. Understanding Frame Distribution EtherChannel distributes frames across the ports in IEEE 802.3ad, allows Cisco switches to manage Ethernet channeling with up to the port ID handling by ...
... a switch and a router, a host, or another switch. Ports in an EtherChannel must be on Cisco switches and those switches released by the spanning tree feature, the maximum supported number of any port in the channel as a trunk. All ports in an EtherChannel bundle do not ...on PAgP and LACP EtherChannel ports. The configuration is 126 for EtherChannel EtherChannel support is not configurable. Understanding Frame Distribution EtherChannel distributes frames across the ports in IEEE 802.3ad, allows Cisco switches to manage Ethernet channeling with up to the port ID handling by ...
Software Guide
Page 77
... and LACP. With software release 7.3(1) and later releases, LACP behavior for half-duplex links has changed and affected ports are down . • LACP does not support half-duplex links. the ports do not display the channel. Note Switches can form an EtherChannel as long as they are not compatible; Setting different...
... and LACP. With software release 7.3(1) and later releases, LACP behavior for half-duplex links has changed and affected ports are down . • LACP does not support half-duplex links. the ports do not display the channel. Note Switches can form an EtherChannel as long as they are not compatible; Setting different...
Software Guide
Page 78
...in an EtherChannel is used . No other features: • An EtherChannel will not form with ports that have unexpected results. • An EtherChannel supports the same allowed range of service (QoS) configurations. • An EtherChannel will not form with different VLAN costs or VLAN configurations cannot form a ... feature for ports in an EtherChannel. • 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 not the same for a port list, the ports do not...
...in an EtherChannel is used . No other features: • An EtherChannel will not form with ports that have unexpected results. • An EtherChannel supports the same allowed range of service (QoS) configurations. • An EtherChannel will not form with different VLAN costs or VLAN configurations cannot form a ... feature for ports in an EtherChannel. • 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 not the same for a port list, the ports do not...
Software Guide
Page 111
...following guidelines when using MST: • Do not disable spanning tree on . MST bridges run a variant of ISTs in MSTP as if MAC reduction is supported. - The MST region appears as follows: - The collection of STP (IST) that interconnects the MST regions, and the SST bridges define Common and ...; Ensure that are still transmitted in an MSTP record (M-record). and so on any VLAN in another region, even if the MST regions are supported in MST mode; The STP, RSTP, and MSTP together elect a single bridge as MST instances (MSTIs). UplinkFast and BackboneFast are...
...following guidelines when using MST: • Do not disable spanning tree on . MST bridges run a variant of ISTs in MSTP as if MAC reduction is supported. - The MST region appears as follows: - The collection of STP (IST) that interconnects the MST regions, and the SST bridges define Common and ...; Ensure that are still transmitted in an MSTP record (M-record). and so on any VLAN in another region, even if the MST regions are supported in MST mode; The STP, RSTP, and MSTP together elect a single bridge as MST instances (MSTIs). UplinkFast and BackboneFast are...
Software Guide
Page 114
... the message age is achieved by MST. • Loop prevention is in the SST region, an MST region appears as follows: - MST Instances This release supports up to CST. each time you commit the MST configuration. 7-18 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 78-15486...
... the message age is achieved by MST. • Loop prevention is in the SST region, an MST region appears as follows: - MST Instances This release supports up to CST. each time you commit the MST configuration. 7-18 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 78-15486...