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... Extended-Range VLAN 17-13 Displaying VLANs 17-14 Configuring VLAN Trunks 17-15 Trunking Overview 17-15 802.1Q Configuration Considerations 17-16 Default Layer 2 Ethernet Interface VLAN Configuration 17-17 Configuring an Ethernet Interface as a Trunk Port 17-17 Interaction with Other Features 17-18 Configuring a Trunk Port 17... 17-25 Dynamic Port VLAN Membership 17-26 VMPS Database Configuration File 17-26 Default VMPS Client Configuration 17-27 VMPS Configuration Guidelines 17-27 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide xvi 78-11380-10
... Extended-Range VLAN 17-13 Displaying VLANs 17-14 Configuring VLAN Trunks 17-15 Trunking Overview 17-15 802.1Q Configuration Considerations 17-16 Default Layer 2 Ethernet Interface VLAN Configuration 17-17 Configuring an Ethernet Interface as a Trunk Port 17-17 Interaction with Other Features 17-18 Configuring a Trunk Port 17... 17-25 Dynamic Port VLAN Membership 17-26 VMPS Database Configuration File 17-26 Default VMPS Client Configuration 17-27 VMPS Configuration Guidelines 17-27 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide xvi 78-11380-10
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... Balancing and Forwarding Methods 31-6 Configuring EtherChannels 31-7 Default EtherChannel Configuration 31-8 EtherChannel Configuration Guidelines 31-8 Configuring Layer 2 EtherChannels 31-9 Configuring EtherChannel Load Balancing 31-11 Configuring the PAgP Learn Method and Priority 31-12 Configuring...Recovering from Corrupted Software 32-2 Recovering from Lost or Forgotten Passwords on Non-LRE Catalyst 2950 Switches 32-2 Recovering from Lost or Forgotten Passwords on Catalyst 2950 LRE Switches 32-4 Password Recovery with Password Recovery Enabled 32-5 Procedure with Password Recovery Disabled ...
... Balancing and Forwarding Methods 31-6 Configuring EtherChannels 31-7 Default EtherChannel Configuration 31-8 EtherChannel Configuration Guidelines 31-8 Configuring Layer 2 EtherChannels 31-9 Configuring EtherChannel Load Balancing 31-11 Configuring the PAgP Learn Method and Priority 31-12 Configuring...Recovering from Corrupted Software 32-2 Recovering from Lost or Forgotten Passwords on Non-LRE Catalyst 2950 Switches 32-2 Recovering from Lost or Forgotten Passwords on Catalyst 2950 LRE Switches 32-4 Password Recovery with Password Recovery Enabled 32-5 Procedure with Password Recovery Disabled ...
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Contents Using Layer 2 Traceroute 32-16 Understanding Layer 2 Traceroute 32-16 Usage Guidelines 32-17 Displaying the Physical...E N D I X Supported MIBs A-1 MIB List A-1 Using FTP to Access the MIB Files A-3 B A P P E N D I X Working with the Cisco IOS File System, Configuration Files, and Software Images B-1 Working with the Flash File System B-1 Displaying Available File Systems B-2 Setting the Default File System B-3 Displaying Information... TFTP B-11 Uploading the Configuration File By Using TFTP B-12 xxvi Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide 78-11380-10
Contents Using Layer 2 Traceroute 32-16 Understanding Layer 2 Traceroute 32-16 Usage Guidelines 32-17 Displaying the Physical...E N D I X Supported MIBs A-1 MIB List A-1 Using FTP to Access the MIB Files A-3 B A P P E N D I X Working with the Cisco IOS File System, Configuration Files, and Software Images B-1 Working with the Flash File System B-1 Displaying Available File Systems B-2 Setting the Default File System B-3 Displaying Information... TFTP B-11 Uploading the Configuration File By Using TFTP B-12 xxvi Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide 78-11380-10
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... EI EI EI EI EI SI SI EI SI 78-11380-10 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide 1-1 Layer 3 IP version 6 (IPv6) packets are treated as non-IP packets. Overview CH A P T E R 1 This chapter provides these topics about the Catalyst 2950 and Catalyst 2955 switch software: • Features, page 1-1 • Management Options, page 1-8 • Network Configuration Examples...
... EI EI EI EI EI SI SI EI SI 78-11380-10 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide 1-1 Layer 3 IP version 6 (IPv6) packets are treated as non-IP packets. Overview CH A P T E R 1 This chapter provides these topics about the Catalyst 2950 and Catalyst 2955 switch software: • Features, page 1-1 • Management Options, page 1-8 • Network Configuration Examples...
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...Catalyst 2955 switch) LRE Features (available only on Catalyst 2950 LRE switches) • Data, voice, and video transmission through sequences • Support for Reed-Solomon error correction • Support for a protected port on Cisco... switch...Cisco 575 LRE CPE or the Cisco 585 LRE CPE - Switch LRE ports and the Ethernet ports on Catalyst 2950ST-24 LRE 997 switches Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide 1-7 Chapter 1 Overview Features 78-11380-10 Monitoring • Switch LEDs that provide visual port and switch status • Switched...switch has learned or...
...Catalyst 2955 switch) LRE Features (available only on Catalyst 2950 LRE switches) • Data, voice, and video transmission through sequences • Support for Reed-Solomon error correction • Support for a protected port on Cisco... switch...Cisco 575 LRE CPE or the Cisco 585 LRE CPE - Switch LRE ports and the Ethernet ports on Catalyst 2950ST-24 LRE 997 switches Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide 1-7 Chapter 1 Overview Features 78-11380-10 Monitoring • Switch LEDs that provide visual port and switch status • Switched...switch has learned or...
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... MAN ring using Catalyst 3550 multilayer switches as residential switches for customers requiring connectivity through 1000BASE-X GBIC ports. For more information about these switches, refer to an aggregation switch. Catalyst 2900 LRE XL or 2950 LRE Layer 2-only switches also can then connect to another residential switch or to the Catalyst 2950 Desktop Switch Hardware Installation Guide. 1-20 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide...
... MAN ring using Catalyst 3550 multilayer switches as residential switches for customers requiring connectivity through 1000BASE-X GBIC ports. For more information about these switches, refer to an aggregation switch. Catalyst 2900 LRE XL or 2950 LRE Layer 2-only switches also can then connect to another residential switch or to the Catalyst 2950 Desktop Switch Hardware Installation Guide. 1-20 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide...
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... on your switch. Figure 1-8 Long-Distance, High-Bandwidth Transport Configuration Access layer Aggregation layer 95750 8 Gbps Catalyst switches CWDM OADM modules Eight 1-Gbps connections CWDM OADM modules Catalyst 4500 multilayer switches Where to Go Next Before configuring the switch, review these... Agents" 1-22 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide 78-11380-10 The CWDM OADM modules combine (or multiplex) the different CWDM wavelengths, allowing them to the Cisco CWDM GBIC and CWDM SFP Installation Note. The Catalyst switches have the EI...
... on your switch. Figure 1-8 Long-Distance, High-Bandwidth Transport Configuration Access layer Aggregation layer 95750 8 Gbps Catalyst switches CWDM OADM modules Eight 1-Gbps connections CWDM OADM modules Catalyst 4500 multilayer switches Where to Go Next Before configuring the switch, review these... Agents" 1-22 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide 78-11380-10 The CWDM OADM modules combine (or multiplex) the different CWDM wavelengths, allowing them to the Cisco CWDM GBIC and CWDM SFP Installation Note. The Catalyst switches have the EI...
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...The alarm profile defaultPort is not Operating alarm FCS Bit Error Rate alarm Description The Catalyst 2955 switch generates a link fault alarm when there are problems with a port physical layer that can associate any alarm condition with two independent alarm relays that cause unreliable data... of the Ethernet ports and generate alarm messages based on the Cisco IOS System Error Message Severity Level. The severity for more information on configuring the relays. 78-11380-10 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide 3-3 See the "Configuring the FCS Bit Error...
...The alarm profile defaultPort is not Operating alarm FCS Bit Error Rate alarm Description The Catalyst 2955 switch generates a link fault alarm when there are problems with a port physical layer that can associate any alarm condition with two independent alarm relays that cause unreliable data... of the Ethernet ports and generate alarm messages based on the Cisco IOS System Error Message Severity Level. The severity for more information on configuring the relays. 78-11380-10 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide 3-3 See the "Configuring the FCS Bit Error...
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...Enabled for communication between managers and agents. Configuring Catalyst 2955 Switch Alarms Chapter 3 Configuring Catalyst 2955 Switch Alarms • SNMP Traps SNMP is an application-layer protocol that provides a message format for switch temperature range 950C maximum to -20oC minimum. See... the "Enabling SNMP Traps" section on page 3-4 for more information. Disabled on all interfaces. Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide...
...Enabled for communication between managers and agents. Configuring Catalyst 2955 Switch Alarms Chapter 3 Configuring Catalyst 2955 Switch Alarms • SNMP Traps SNMP is an application-layer protocol that provides a message format for switch temperature range 950C maximum to -20oC minimum. See... the "Enabling SNMP Traps" section on page 3-4 for more information. Disabled on all interfaces. Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide...
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... IP address in its running configuration. Figure 6-2 Initial Configuration Overview IE2100 Configuration Registrar V WAN TFTP server DHCP server Distribution layer DHCP relay agent default gateway 71445 Access layer switches 78-11380-10 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide 6-5 The DHCP relay agent forwards the reply to the DHCP relay agent. The embedded CNS agents...
... IP address in its running configuration. Figure 6-2 Initial Configuration Overview IE2100 Configuration Registrar V WAN TFTP server DHCP server Distribution layer DHCP relay agent default gateway 71445 Access layer switches 78-11380-10 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide 6-5 The DHCP relay agent forwards the reply to the DHCP relay agent. The embedded CNS agents...
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... required software versions. These sections describe: • Command Switch Characteristics, page 7-3 • Standby Command Switch Characteristics, page 7-3 • Candidate Switch and Member Switch Characteristics, page 7-4 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide 7-2 78-11380-10 The command switch is a group of connected Catalyst switches that are connected to the command switch according to the connectivity guidelines described in the cluster...
... required software versions. These sections describe: • Command Switch Characteristics, page 7-3 • Standby Command Switch Characteristics, page 7-3 • Candidate Switch and Member Switch Characteristics, page 7-4 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide 7-2 78-11380-10 The command switch is a group of connected Catalyst switches that are connected to the command switch according to the connectivity guidelines described in the cluster...
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... Managing the ARP Table Chapter 8 Administering the Switch Step 4 Step 5 Command show mac address-table vlan Description Displays MAC address table information for the specified MAC address. Displays the Layer 2 multicast entries for all VLANs or the ...specified VLAN. The Address Resolution Protocol (ARP) associates a host IP address with this MAC address as input, ARP determines the associated MAC address. For CLI procedures, refer to the Cisco IOS Release 12.1 documentation on Cisco.com. 8-28 Catalyst 2950 and Catalyst 2955 Switch...
... Managing the ARP Table Chapter 8 Administering the Switch Step 4 Step 5 Command show mac address-table vlan Description Displays MAC address table information for the specified MAC address. Displays the Layer 2 multicast entries for all VLANs or the ...specified VLAN. The Address Resolution Protocol (ARP) associates a host IP address with this MAC address as input, ARP determines the associated MAC address. For CLI procedures, refer to the Cisco IOS Release 12.1 documentation on Cisco.com. 8-28 Catalyst 2950 and Catalyst 2955 Switch...
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... an additional layer of these sections: • Preventing Unauthorized Access to Your Switch, page 9-1 • Protecting Access to Privileged EXEC Commands, page 9-2 • Controlling Switch Access with TACACS+, page 9-10 • Controlling Switch Access with RADIUS, page 9-18 • Configuring the Switch for Local ... on page 9-7. • If you want to use the same database to configure switch-based authentication on page 9-10. 78-11380-10 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide 9-1 For more of security, you restrict access to each user before...
... an additional layer of these sections: • Preventing Unauthorized Access to Your Switch, page 9-1 • Protecting Access to Privileged EXEC Commands, page 9-2 • Controlling Switch Access with TACACS+, page 9-10 • Controlling Switch Access with RADIUS, page 9-18 • Configuring the Switch for Local ... on page 9-7. • If you want to use the same database to configure switch-based authentication on page 9-10. 78-11380-10 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide 9-1 For more of security, you restrict access to each user before...
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... an additional layer of security, particularly for passwords that cross the network or that are stored on a TFTP server, you can not re-enter privileged EXEC mode. Catalyst 2950 and Catalyst 2955 Switch Software Configuration ...Guide 9-4 78-11380-10 or Define a secret password, which is saved using a nonreversible encryption method. • (Optional) For level, the range is case sensitive, and allows spaces but ignores leading spaces. By default, no password is defined. • (Optional) For encryption-type, only type 5, a Cisco...
... an additional layer of security, particularly for passwords that cross the network or that are stored on a TFTP server, you can not re-enter privileged EXEC mode. Catalyst 2950 and Catalyst 2955 Switch Software Configuration ...Guide 9-4 78-11380-10 or Define a secret password, which is saved using a nonreversible encryption method. • (Optional) For level, the range is case sensitive, and allows spaces but ignores leading spaces. By default, no password is defined. • (Optional) For encryption-type, only type 5, a Cisco...
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...from the client before resending the request). 2 times (number of times that the switch will send an EAP-request/identity frame before any other Layer 2 features are enabled. • The 802.1x protocol is supported on Layer 2 static-access ports and voice VLAN ports, but it is not supported on ...a dynamic-access (VLAN Query Protocol [VQP]) port, an error message appears, and 802.1x is not enabled. EtherChannel ports-Do not configure a port that is not enabled. 10-10 Catalyst 2950 and Catalyst 2955 Switch ...
...from the client before resending the request). 2 times (number of times that the switch will send an EAP-request/identity frame before any other Layer 2 features are enabled. • The 802.1x protocol is supported on Layer 2 static-access ports and voice VLAN ports, but it is not supported on ...a dynamic-access (VLAN Query Protocol [VQP]) port, an error message appears, and 802.1x is not enabled. EtherChannel ports-Do not configure a port that is not enabled. 10-10 Catalyst 2950 and Catalyst 2955 Switch ...
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...Layer 2 protocols and do not handle routing or bridging. Configure switch ports by negotiating with the port on the other end of the link. 11 C H A P T E R Configuring Interface Characteristics This chapter describes the types of interfaces on a Catalyst 2950 or Catalyst 2955 switch and how to the switch... describes the different types of interfaces supported by the switch with a physical port. The chapter has these interface types. Switch ports are used in this release and the online Cisco IOS Interface Command Reference for Cisco IOS Release 12.1. You can configure a port as...
...Layer 2 protocols and do not handle routing or bridging. Configure switch ports by negotiating with the port on the other end of the link. 11 C H A P T E R Configuring Interface Characteristics This chapter describes the types of interfaces on a Catalyst 2950 or Catalyst 2955 switch and how to the switch... describes the different types of interfaces supported by the switch with a physical port. The chapter has these interface types. Switch ports are used in this release and the online Cisco IOS Interface Command Reference for Cisco IOS Release 12.1. You can configure a port as...
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...Packets received on a port are the DTP, the Cisco Discovery Protocol (CDP), the Port Aggregation Protocol (PAgP...users. Add ports to a VLAN by function, team, or application, without a Layer 3 device to route traffic between switches and servers. EtherChannel Port Groups EtherChannel port groups provide the ability to the EtherChannel... For more information about trunk ports, see Chapter 31, "Configuring EtherChannels." 78-11380-10 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide 11-3 To configure extended-range VLANs (VLAN IDs 1006 to 4094) when...
...Packets received on a port are the DTP, the Cisco Discovery Protocol (CDP), the Port Aggregation Protocol (PAgP...users. Add ports to a VLAN by function, team, or application, without a Layer 3 device to route traffic between switches and servers. EtherChannel Port Groups EtherChannel port groups provide the ability to the EtherChannel... For more information about trunk ports, see Chapter 31, "Configuring EtherChannels." 78-11380-10 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide 11-3 To configure extended-range VLANs (VLAN IDs 1006 to 4094) when...
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... about a specific interface or all types of Interfaces, page 11-5 • Configuring and Using Interface-Range Macros, page 11-7 11-4 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide 78-11380-10 The port numbers always begin at 1, starting at the left when facing the front of the...is more than one interface type (for example, 10/100 ports and Gigabit Ethernet ports), the port number starts again with Layer 2 Switches Cisco router Switch Host A Host B 46647 VLAN 20 VLAN 30 Using the Interface Command To configure a physical interface (port), use the...
... about a specific interface or all types of Interfaces, page 11-5 • Configuring and Using Interface-Range Macros, page 11-7 11-4 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide 78-11380-10 The port numbers always begin at 1, starting at the left when facing the front of the...is more than one interface type (for example, 10/100 ports and Gigabit Ethernet ports), the port number starts again with Layer 2 Switches Cisco router Switch Host A Host B 46647 VLAN 20 VLAN 30 Using the Interface Command To configure a physical interface (port), use the...
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... "Configuring Aggregation Control Protocol (LACP) EtherChannels." Port Fast Disabled. Media Type (Catalyst 2950 LRE switches only) SFP module preferred. 78-11380-10 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide 11-9 Flow control Flow control is set to the port,... unknown unicast traffic (Catalyst 2950 section on page 22-9. Duplex mode Autonegotiate. See the "Default Port Security Configuration" section on page 22-5. Table 11-1 Default Ethernet Interface Configuration Feature Default Setting Operating mode Layer 2. Port enable state...
... "Configuring Aggregation Control Protocol (LACP) EtherChannels." Port Fast Disabled. Media Type (Catalyst 2950 LRE switches only) SFP module preferred. 78-11380-10 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide 11-9 Flow control Flow control is set to the port,... unknown unicast traffic (Catalyst 2950 section on page 22-9. Duplex mode Autonegotiate. See the "Default Port Security Configuration" section on page 22-5. Table 11-1 Default Ethernet Interface Configuration Feature Default Setting Operating mode Layer 2. Port enable state...
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...." For a Layer 2 Ethernet network to construct a loop-free path. Switches might receive duplicate messages. The STP uses a spanning-tree algorithm to a single LAN segment or a switched LAN of the spanning tree. Switches send and receive spanning-tree frames, called root or designated switches. The path cost value represents the media speed. 14-2 Catalyst 2950 and Catalyst 2955 Switch Software...
...." For a Layer 2 Ethernet network to construct a loop-free path. Switches might receive duplicate messages. The STP uses a spanning-tree algorithm to a single LAN segment or a switched LAN of the spanning tree. Switches send and receive spanning-tree frames, called root or designated switches. The path cost value represents the media speed. 14-2 Catalyst 2950 and Catalyst 2955 Switch Software...