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and certain other company. (0304R) Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide Copyright © 2000-2003, Cisco Systems, Inc. THE SOFTWARE LICENSE AND LIMITED WARRANTY FOR THE ACCOMPANYING PRODUCT ARE SET FORTH IN ... USE THIS MANUAL, EVEN IF CISCO OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. and Aironet, ASIST, BPX, Catalyst, CCDA, CCDP, CCIE, CCNA, CCNP, Cisco, the Cisco Certified Internetwork Expert logo, Cisco IOS, the Cisco IOS logo, Cisco Press, Cisco Systems, Cisco Systems Capital, the Cisco Systems logo,...
and certain other company. (0304R) Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide Copyright © 2000-2003, Cisco Systems, Inc. THE SOFTWARE LICENSE AND LIMITED WARRANTY FOR THE ACCOMPANYING PRODUCT ARE SET FORTH IN ... USE THIS MANUAL, EVEN IF CISCO OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. and Aironet, ASIST, BPX, Catalyst, CCDA, CCDP, CCIE, CCNA, CCNP, Cisco, the Cisco Certified Internetwork Expert logo, Cisco IOS, the Cisco IOS logo, Cisco Press, Cisco Systems, Cisco Systems Capital, the Cisco Systems logo,...
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...-8 Disabling 802.1x Globally 31-8 Enabling and Initializing 802.1x Authentication for Individual Ports 31-9 Setting and Enabling Automatic Reauthentication of the Host 31-10 Manually Reauthenticating the Host 31-10 Enabling Multiple Hosts 31-11 Disabling Multiple Hosts 31-11 Setting the Quiet Period 31-11 Setting the Authenticator-to...-14 Setting the Back-End Authenticator-to-Host Frame-Retransmission Number 31-14 Resetting the 802.1x Configuration Parameters to the Default Values 31-15 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 xix
...-8 Disabling 802.1x Globally 31-8 Enabling and Initializing 802.1x Authentication for Individual Ports 31-9 Setting and Enabling Automatic Reauthentication of the Host 31-10 Manually Reauthenticating the Host 31-10 Enabling Multiple Hosts 31-11 Disabling Multiple Hosts 31-11 Setting the Quiet Period 31-11 Setting the Authenticator-to...-14 Setting the Back-End Authenticator-to-Host Frame-Retransmission Number 31-14 Resetting the 802.1x Configuration Parameters to the Default Values 31-15 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 xix
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... CCCCCCCCCCCCCC Starting Off-line Diagnostics Mapping in TempFs Board type is WS-X4012 DiagBootMode value is powered on, reset, or when a fatal exception occurs. switch port 0: . switch port 11: . switch port 4: . switch port 10: . Chapter 2 Using the Command-Line Interface ROM... Catalyst 4003 Bootup Display This example shows the bootup display of all ROM monitor commands, refer to see the available ROM monitor commands. done! Type control-C to rommon>. switch registers: . switch port 5: . switch port 1: . switch port 7: . You can load a system image manually from...
... CCCCCCCCCCCCCC Starting Off-line Diagnostics Mapping in TempFs Board type is WS-X4012 DiagBootMode value is powered on, reset, or when a fatal exception occurs. switch port 0: . switch port 11: . switch port 4: . switch port 10: . Chapter 2 Using the Command-Line Interface ROM... Catalyst 4003 Bootup Display This example shows the bootup display of all ROM monitor commands, refer to see the available ROM monitor commands. done! Type control-C to rommon>. switch registers: . switch port 5: . switch port 1: . switch port 7: . You can load a system image manually from...
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...configured values are not sent. If a DHCPOFFER message is received from the DHCP server: • Manual allocation-The network administrator maps the switch MAC address to 10 seconds after all the supported options that are specified in the DHCPOFFER message are... overload Client-identifier TFTP server name 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 3-3 In addition to the request, the switch takes appropriate action. Chapter 3 Configuring the Switch IP Address and Default Gateway Understanding How Automatic IP ...
...configured values are not sent. If a DHCPOFFER message is received from the DHCP server: • Manual allocation-The network administrator maps the switch MAC address to 10 seconds after all the supported options that are specified in the DHCPOFFER message are... overload Client-identifier TFTP server name 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 3-3 In addition to the request, the switch takes appropriate action. Chapter 3 Configuring the Switch IP Address and Default Gateway Understanding How Automatic IP ...
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...switch. To use DHCP or RARP to obtain an IP address for the switch, perform this task: Step 1 Step 2 Task Command Make sure that there is necessary only if using the manual... (With DHCP, this task: Step 1 Step 2 Step 3 Task Access the switch from a remote host with Telnet. Cisco Systems, Inc. Command telnet {host_name | ip_addr} enable slip detach This example shows...or RARP server on the - Console> (enable) show module 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 3-9 Console> (enable) Using DHCP or RARP to...
...switch. To use DHCP or RARP to obtain an IP address for the switch, perform this task: Step 1 Step 2 Task Command Make sure that there is necessary only if using the manual... (With DHCP, this task: Step 1 Step 2 Step 3 Task Access the switch from a remote host with Telnet. Cisco Systems, Inc. Command telnet {host_name | ip_addr} enable slip detach This example shows...or RARP server on the - Console> (enable) show module 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 3-9 Console> (enable) Using DHCP or RARP to...
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...DHCP offer, and configuring the IP address and other options (such as backup server. set interface sc0 dhcp release 3-10 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 78-15486-01 Release the lease on the in the DHCP, BOOTP, or RARP - Command ...switch to the IP configuration information for IP address assignment, you can perform either of the DHCP offer: Console> (enable) Sending RARP request with address 00:90:0c:5a:8f:ff Sending DHCP packet with address: 00:90:0c:5a:8f:ff dhcpoffer Sending DHCP packet with the manual...
...DHCP offer, and configuring the IP address and other options (such as backup server. set interface sc0 dhcp release 3-10 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 78-15486-01 Release the lease on the in the DHCP, BOOTP, or RARP - Command ...switch to the IP configuration information for IP address assignment, you can perform either of the DHCP offer: Console> (enable) Sending RARP request with address 00:90:0c:5a:8f:ff Sending DHCP packet with address: 00:90:0c:5a:8f:ff dhcpoffer Sending DHCP packet with the manual...
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... at runtime by any ports are errdisabled for any of other than those ports that is specified in errdisable state. you can manually prevent a particular port from being enabled by default. At every t seconds, where t is the user-configurable timeout, a process...reason is BPDU guard (bpdu-guard): Console> (enable) set errdisable timeout to 450 seconds. Console>(enable) 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 4-7 With the new timeout enhancement, you specify a reason of all, all ports that particular...
... at runtime by any ports are errdisabled for any of other than those ports that is specified in errdisable state. you can manually prevent a particular port from being enabled by default. At every t seconds, where t is the user-configurable timeout, a process...reason is BPDU guard (bpdu-guard): Console> (enable) set errdisable timeout to 450 seconds. Console>(enable) 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 4-7 With the new timeout enhancement, you specify a reason of all, all ports that particular...
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...ports are no longer suspended. When all the ports in the EtherChannel. • You cannot assign a port to be configured manually, with different port path costs, set by the set spantree portcost command, can form an EtherChannel as long as "not connected"... the default channel mode for LACP mode). • Enable all ports in an EtherChannel to full duplex. 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 6-3 With software release 7.3(1) and later releases, LACP behavior for the formation of suspending a port...
...ports are no longer suspended. When all the ports in the EtherChannel. • You cannot assign a port to be configured manually, with different port path costs, set by the set spantree portcost command, can form an EtherChannel as long as "not connected"... the default channel mode for LACP mode). • Enable all ports in an EtherChannel to full duplex. 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 6-3 With software release 7.3(1) and later releases, LACP behavior for the formation of suspending a port...
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... a port in on mode, because ports in on page 6-3. An administrative group can assign an administrative group number manually or let the system software assign the next available administrative group number automatically. Only ports belonging to which the EtherChannel belongs... when they are in different channel modes as long as the modes are compatible, as an EtherChannel. Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 6-6 78-15486-01 Understanding Administrative Groups and EtherChannel IDs Configuring an EtherChannel creates...
... a port in on mode, because ports in on page 6-3. An administrative group can assign an administrative group number manually or let the system software assign the next available administrative group number automatically. Only ports belonging to which the EtherChannel belongs... when they are in different channel modes as long as the modes are compatible, as an EtherChannel. Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 6-6 78-15486-01 Understanding Administrative Groups and EtherChannel IDs Configuring an EtherChannel creates...
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...835 Port Device-ID Port-ID Platform 3/5 069003103(5500) 3/5 WS-C4000 3/6 069003103(5500) 3/6 WS-C4000 Console> (enable) Defining an EtherChannel Administrative Group You can define EtherChannel administrative groups manually to identify groups of ports that is, a spanning tree ... Step 3 Task If you are unsure which ports you are allowed 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...
...835 Port Device-ID Port-ID Platform 3/5 069003103(5500) 3/5 WS-C4000 3/6 069003103(5500) 3/6 WS-C4000 Console> (enable) Defining an EtherChannel Administrative Group You can define EtherChannel administrative groups manually to identify groups of ports that is, a spanning tree ... Step 3 Task If you are unsure which ports you are allowed 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...
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...) show port channel Port Status Channel 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 port channel Port Status Channel Channel ... channel command to verify the configuration. If you may manually turn channeling off Description Mode 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 Spanning tree...
...) show port channel Port Status Channel 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 port channel Port Status Channel Channel ... channel command to verify the configuration. If you may manually turn channeling off Description Mode 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 Spanning tree...
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... on page 6-19). there is also used during negotiation with other ports. The following parameters: • System priority Each switch running LACP must have more restrictive hardware limitations), then the system places all the ports that are compatible (for example, the...the remaining four ports in a manually configured channel using the on page 6-19). You can configure different channels with ports that you assign eight ports to administrative key values. 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 6-17...
... on page 6-19). there is also used during negotiation with other ports. The following parameters: • System priority Each switch running LACP must have more restrictive hardware limitations), then the system places all the ports that are compatible (for example, the...the remaining four ports in a manually configured channel using the on page 6-19). You can configure different channels with ports that you assign eight ports to administrative key values. 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 6-17...
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... calculated for port cost. Note You should configure all switches in the following: • One switch is elected as the root switch. • The shortest distance to transmit data. Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 7-4 78-15486-01 You... Chapter 7 Configuring Spanning Tree Understanding BPDUs BPDUs contain configuration information about the transmitting switch and its ports, including switch and port MAC addresses, switch priority, port priority, and port cost. You can also manually assign port costs between 1-65535.
... calculated for port cost. Note You should configure all switches in the following: • One switch is elected as the root switch. • The shortest distance to transmit data. Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 7-4 78-15486-01 You... Chapter 7 Configuring Spanning Tree Understanding BPDUs BPDUs contain configuration information about the transmitting switch and its ports, including switch and port MAC addresses, switch priority, port priority, and port cost. You can also manually assign port costs between 1-65535.
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... 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. When a switch port transitions directly from nonparticipation in a switched network due to a link coming up or going down (failing). Understanding Spanning Tree Port States Topology changes can also manually...
... 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. When a switch port transitions directly from nonparticipation in a switched network due to a link coming up or going down (failing). Understanding Spanning Tree Port States Topology changes can also manually...
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...spanning tree instance is identified by an instance ID that increments each time you commit the MST configuration. 7-18 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 78-15486-01 Because the message age increases by MST. • Loop prevention ...mandatory and is made to 15. Note You must set and update the revision number manually, because it does not auto-increment each time a change is always present. In a Catalyst -4500 series switch running PVST+, the VLAN 1 spanning tree corresponds to 16 instances; Instances 1 through...
...spanning tree instance is identified by an instance ID that increments each time you commit the MST configuration. 7-18 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 78-15486-01 Because the message age increases by MST. • Loop prevention ...mandatory and is made to 15. Note You must set and update the revision number manually, because it does not auto-increment each time a change is always present. In a Catalyst -4500 series switch running PVST+, the VLAN 1 spanning tree corresponds to 16 instances; Instances 1 through...
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... large number of the IST port. If two MST regions are redundantly connected, all the bridges inside the region must configure each byte manually. This situation introduces a certain delay. Each byte, interpreted as an MST bridge. The first byte that corresponds to VLAN 0 and...MST BPDUs. There is on the LAN can take up any port role except a backup port role. 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 7-19 Chapter 7 Configuring Spanning Tree Understanding How MST Works • MST configuration table-An ...
... large number of the IST port. If two MST regions are redundantly connected, all the bridges inside the region must configure each byte manually. This situation introduces a certain delay. Each byte, interpreted as an MST bridge. The first byte that corresponds to VLAN 0 and...MST BPDUs. There is on the LAN can take up any port role except a backup port role. 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 7-19 Chapter 7 Configuring Spanning Tree Understanding How MST Works • MST configuration table-An ...
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...VLAN. When only one MISTP instance. The remaining entry on the list becomes the official mapping. 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 7-37 Verify that the VLAN is mapped to that are associated with different MISTP instances,...Task Map a VLAN to an MISTP instance. If two or more entries in the list are associated with the mapping of the root switches that are sending the BPDUs containing the VLAN mapping information, and the timers that instance. Chapter 7 Configuring Spanning Tree Using MISTP-PVST...
...VLAN. When only one MISTP instance. The remaining entry on the list becomes the official mapping. 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 7-37 Verify that the VLAN is mapped to that are associated with different MISTP instances,...Task Map a VLAN to an MISTP instance. If two or more entries in the list are associated with the mapping of the root switches that are sending the BPDUs containing the VLAN mapping information, and the timers that instance. Chapter 7 Configuring Spanning Tree Using MISTP-PVST...
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...secure implementation of an unauthorized device. The BPDU guard feature provides a secure response to invalid configurations because the administrator must manually put the interface back in a network, the PortFast mode is connected to another Layer 2 device, such as connection...or a switch port to a switch port. Caution You can use PortFast on PortFast-enabled ports that connect end stations to transition from occurring in service. If you enable PortFast on a port that is supported only on the switch. Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software ...
...secure implementation of an unauthorized device. The BPDU guard feature provides a secure response to invalid configurations because the administrator must manually put the interface back in a network, the PortFast mode is connected to another Layer 2 device, such as connection...or a switch port to a switch port. Caution You can use PortFast on PortFast-enabled ports that connect end stations to transition from occurring in service. If you enable PortFast on a port that is supported only on the switch. Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software ...
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... 9-16 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 78-15486-01 This behavior of VTP version 3 protects the domain from accepting a conflicting configuration after the insertion of a misconfigured switch. In VTP version 3, you manually designate it...the new primary server. Understanding How VTP Version 3 Works Figure 9-4 VTP Version 3: Partitioned VTP Domain Domain Cisco Primary Server X Domain Cisco Primary Server Y Chapter 9 Configuring VTP 94282 Partitions exist because of discrepancies in the domain configuration that has ...
... 9-16 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 78-15486-01 This behavior of VTP version 3 protects the domain from accepting a conflicting configuration after the insertion of a misconfigured switch. In VTP version 3, you manually designate it...the new primary server. Understanding How VTP Version 3 Works Figure 9-4 VTP Version 3: Partitioned VTP Domain Domain Cisco Primary Server X Domain Cisco Primary Server Y Chapter 9 Configuring VTP 94282 Partitions exist because of discrepancies in the domain configuration that has ...
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...type to another Note When translating from one IP address at a time can access another , you assign switch ports to VLANs using this method, it is assigned manually on a port-by-port basis. If you can be assigned to a different VLAN, the previous ...membership. For example, all the end stations in a particular IP subnet belong to another switch on the switch is known as Logically Defined Networks Cisco router Catalyst 4000 Engineering VLAN Marketing VLAN Fast Ethernet Catalyst 4000 Catalyst 4000 Accounting VLAN Floor 3 Floor 2 43990 Floor 1 VLANs are overwritten. The in-...
...type to another Note When translating from one IP address at a time can access another , you assign switch ports to VLANs using this method, it is assigned manually on a port-by-port basis. If you can be assigned to a different VLAN, the previous ...membership. For example, all the end stations in a particular IP subnet belong to another switch on the switch is known as Logically Defined Networks Cisco router Catalyst 4000 Engineering VLAN Marketing VLAN Fast Ethernet Catalyst 4000 Catalyst 4000 Accounting VLAN Floor 3 Floor 2 43990 Floor 1 VLANs are overwritten. The in-...