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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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... LRE 997 Catalyst 2950SX-24 Catalyst 2950SX-48-SI Catalyst 2950T-24 Catalyst 2950T-48-SI Software Image SI1 SI EI2 EI EI EI EI EI EI EI SI SI EI SI 78-11380-10 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide 1-1 Features The switch software supports the switches listed in Table 1-1 and in the release notes. Layer 3 IP...
... LRE 997 Catalyst 2950SX-24 Catalyst 2950SX-48-SI Catalyst 2950T-24 Catalyst 2950T-48-SI Software Image SI1 SI EI2 EI EI EI EI EI EI EI SI SI EI SI 78-11380-10 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide 1-1 Features The switch software supports the switches listed in Table 1-1 and in the release notes. Layer 3 IP...
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...on Catalyst 2950ST-24 LRE 997 switches Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide 1-7 Switch LRE ports and the Ethernet ports on remote LRE customer premises equipment (CPE) devices, such as the Cisco 575 LRE CPE or the Cisco 585...Layer 2 traceroute to identify the physical path that a packet takes from a source device to a destination device • Facilities for processing alarms related to temperature, power-supply conditions, and the status of the Ethernet ports (available only on the Catalyst 2955 switch) LRE Features (available only on Catalyst 2950 LRE switches...
...on Catalyst 2950ST-24 LRE 997 switches Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide 1-7 Switch LRE ports and the Ethernet ports on remote LRE customer premises equipment (CPE) devices, such as the Cisco 575 LRE CPE or the Cisco 585...Layer 2 traceroute to identify the physical path that a packet takes from a source device to a destination device • Facilities for processing alarms related to temperature, power-supply conditions, and the status of the Ethernet ports (available only on the Catalyst 2955 switch) LRE Features (available only on Catalyst 2950 LRE switches...
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...-speed access to the MAN. The Catalyst LRE switches can be Catalyst 2950 switches, providing customers with high-speed connections to Ethernet metropolitan-area networks (MANs). 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 78-11380-10...
...-speed access to the MAN. The Catalyst LRE switches can be Catalyst 2950 switches, providing customers with high-speed connections to Ethernet metropolitan-area networks (MANs). 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 78-11380-10...
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...; Chapter 5, "Assigning the Switch IP Address and Default Gateway" • Chapter 6, "Configuring IE2100 CNS Agents" 1-22 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide 78-11380-10 A common wavelength used for start up to the Cisco CWDM GBIC and CWDM SFP Installation...-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 sections for long-distance ...
...; Chapter 5, "Assigning the Switch IP Address and Default Gateway" • Chapter 6, "Configuring IE2100 CNS Agents" 1-22 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide 78-11380-10 A common wavelength used for start up to the Cisco CWDM GBIC and CWDM SFP Installation...-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 sections for long-distance ...
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...Cisco IOS System Error Message Severity Level. The alarm profile defaultPort is error condition, level 3. Table 3-2 Catalyst 2955 Port Status Monitoring Alarms Alarm Link Fault alarm Port not Forwarding alarm Port is assigned a severity level based on configuring the relays. 78-11380-10 Catalyst 2950 and Catalyst 2955 Switch... condition 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 cause unreliable data transmission. When triggered, the port is not ...
...Cisco IOS System Error Message Severity Level. The alarm profile defaultPort is error condition, level 3. Table 3-2 Catalyst 2955 Port Status Monitoring Alarms Alarm Link Fault alarm Port not Forwarding alarm Port is assigned a severity level based on configuring the relays. 78-11380-10 Catalyst 2950 and Catalyst 2955 Switch... condition 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 cause unreliable data transmission. When triggered, the port is not ...
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... managers and agents. Disabled on all interfaces. Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide 3-4 78-11380-10 Table 3-3 Default Catalyst 2955 Switch Alarm Configuration Global Port Alarm Power Supply Alarm ...Catalyst 2955 switch alarms configuration. The snmp-server enable traps command can use alarm profiles to set environmental or port status alarm conditions to the console. Disabled on all interfaces. Configuring Catalyst 2955 Switch Alarms Chapter 3 Configuring Catalyst 2955 Switch Alarms • SNMP Traps SNMP is an application-layer...
... managers and agents. Disabled on all interfaces. Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide 3-4 78-11380-10 Table 3-3 Default Catalyst 2955 Switch Alarm Configuration Global Port Alarm Power Supply Alarm ...Catalyst 2955 switch alarms configuration. The snmp-server enable traps command can use alarm profiles to set environmental or port status alarm conditions to the console. Disabled on all interfaces. Configuring Catalyst 2955 Switch Alarms Chapter 3 Configuring Catalyst 2955 Switch Alarms • SNMP Traps SNMP is an application-layer...
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... reply to the DHCP relay agent. 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 embedded CNS agents initiate communication with the CNS configuration agent. Upon receiving the request, the...
... reply to the DHCP relay agent. 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 embedded CNS agents initiate communication with the CNS configuration agent. Upon receiving the request, the...
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... of them. The benefits of clustering switches include: • Management of Catalyst switches regardless of Cluster Candidates and Members" section on page 7-5. • Command-switch redundancy if a command switch fails. One or more switches can be member switches. This conserves on page 1-9. Cluster members are managed as a Layer 3 router between the Layer 2 switches in the same location, or they can...
... of them. The benefits of clustering switches include: • Management of Catalyst switches regardless of Cluster Candidates and Members" section on page 7-5. • Command-switch redundancy if a command switch fails. One or more switches can be member switches. This conserves on page 1-9. Cluster members are managed as a Layer 3 router between the Layer 2 switches in the same location, or they can...
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... MAC address. Encapsulation of IP datagrams and ARP requests and replies on Cisco.com. 8-28 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide 78-11380-10 For CLI procedures, refer to the Cisco IOS Release 12.1 documentation on IEEE 802 networks other than Ethernet is ...specified by using one or more of addresses present in a link-layer frame and sent over ...
... MAC address. Encapsulation of IP datagrams and ARP requests and replies on Cisco.com. 8-28 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide 78-11380-10 For CLI procedures, refer to the Cisco IOS Release 12.1 documentation on IEEE 802 networks other than Ethernet is ...specified by using one or more of addresses present in a link-layer frame and sent over ...
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...Configuring and Using Interface-Range Macros, page 11-7 11-4 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide 78-11380-10 Ports in VLAN 30, it must go from Host A to the switch, to the router, back to the switch, and then to display information about a specific interface ...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 Cisco IOS show privileged EXEC commands to Host B. If there is more...
...Configuring and Using Interface-Range Macros, page 11-7 11-4 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide 78-11380-10 Ports in VLAN 30, it must go from Host A to the switch, to the router, back to the switch, and then to display information about a specific interface ...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 Cisco IOS show privileged EXEC commands to Host B. If there is more...
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.... The PVST+ runs on each VLAN on the IEEE 802.1D standard and Cisco proprietary extensions. By contrast, PVST+ uses a short aging time for rapid convergence...that is uses a rapid convergence based on page 14-12. 78-11380-10 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide 14-9 The rapid PVST+ uses the same configuration as PVST+... where noted), and the switch needs only minimal extra configuration. A spanning-tree reconfiguration on one link is oversubscribed. The most common initial deployment of a Layer 2 switched network. Chapter 14 Configuring...
.... The PVST+ runs on each VLAN on the IEEE 802.1D standard and Cisco proprietary extensions. By contrast, PVST+ uses a short aging time for rapid convergence...that is uses a rapid convergence based on page 14-12. 78-11380-10 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide 14-9 The rapid PVST+ uses the same configuration as PVST+... where noted), and the switch needs only minimal extra configuration. A spanning-tree reconfiguration on one link is oversubscribed. The most common initial deployment of a Layer 2 switched network. Chapter 14 Configuring...
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...802.1D forwarding delay and quickly transitions root ports and designated ports to configure the Cisco implementation of VLANs. The most common initial deployment of a Layer 2 switched network. When the switch is in the MST mode, the Rapid Spanning Tree Protocol (RSTP), which is based...8226; Configuring MSTP Features, page 15-11 • Displaying the MST Configuration and Status, page 15-23 78-11380-10 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide 15-1 This deployment provides the highly available network required in one instance (forwarding path) does not affect ...
...802.1D forwarding delay and quickly transitions root ports and designated ports to configure the Cisco implementation of VLANs. The most common initial deployment of a Layer 2 switched network. When the switch is in the MST mode, the Rapid Spanning Tree Protocol (RSTP), which is based...8226; Configuring MSTP Features, page 15-11 • Displaying the MST Configuration and Status, page 15-23 78-11380-10 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide 15-1 This deployment provides the highly available network required in one instance (forwarding path) does not affect ...
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...or if Link A fails, CSUF selects either the Switch B or Switch C alternate stack-root port and puts it into the forwarding state in less than 1 second under normal network conditions) across the switches at the access layer. For more information, see the "Events that one ... Cross-stack UplinkFast (CSUF) provides a fast spanning-tree transition (fast convergence in less than 1 second. 78-11380-10 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide 16-5 CSUF might not provide a fast transition all the time; stack ports are cascaded through the GigaStack GBIC...
...or if Link A fails, CSUF selects either the Switch B or Switch C alternate stack-root port and puts it into the forwarding state in less than 1 second under normal network conditions) across the switches at the access layer. For more information, see the "Events that one ... Cross-stack UplinkFast (CSUF) provides a fast spanning-tree transition (fast convergence in less than 1 second. 78-11380-10 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide 16-5 CSUF might not provide a fast transition all the time; stack ports are cascaded through the GigaStack GBIC...
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... implies, IGMP snooping requires the LAN switch to snoop on your Catalyst 2950 or Catalyst 2955 switch, including an application of multicast groups and member ports. When the switch receives an IGMP report from a host for Cisco IOS Release 12.1. Note For complete syntax..., refer to the switch command reference for this release and the Cisco IOS Release Network Protocols Command Reference, Part 1, for a particular multicast group, 78-11380-10 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide 21-1 Understanding IGMP Snooping Layer 2 switches can use static MAC...
... implies, IGMP snooping requires the LAN switch to snoop on your Catalyst 2950 or Catalyst 2955 switch, including an application of multicast groups and member ports. When the switch receives an IGMP report from a host for Cisco IOS Release 12.1. Note For complete syntax..., refer to the switch command reference for this release and the Cisco IOS Release Network Protocols Command Reference, Part 1, for a particular multicast group, 78-11380-10 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide 21-1 Understanding IGMP Snooping Layer 2 switches can use static MAC...
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...refer to the "Configuring IP Multicast Layer 3 Switching" chapter in the VLAN. The switch CPU creates a multicast forwarding-table ... 2 through 5, all ports in the Catalyst 4500 Series Switch Cisco IOS Software Configuration Guide, Cisco IOS Release 12.1(12c)EW at this URL: http://www.cisco.com/univercd/cc/td/doc/product/lan/cat4000... Router A sends a general query to the switch, which forwards the query to the group with that includes the port numbers of Packet IGMP !IGMP Ports 0 1, 2 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide 21-3 Table 21-1 IGMP ...
...refer to the "Configuring IP Multicast Layer 3 Switching" chapter in the VLAN. The switch CPU creates a multicast forwarding-table ... 2 through 5, all ports in the Catalyst 4500 Series Switch Cisco IOS Software Configuration Guide, Cisco IOS Release 12.1(12c)EW at this URL: http://www.cisco.com/univercd/cc/td/doc/product/lan/cat4000... Router A sends a general query to the switch, which forwards the query to the group with that includes the port numbers of Packet IGMP !IGMP Ports 0 1, 2 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide 21-3 Table 21-1 IGMP ...
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...network for use a unique RSPAN VLAN session on your switch. do not assign access ports to these conditions are limited to act only as source switches to ensure the delivery of only Catalyst 2950 or Catalyst 2955 switches, you must have special properties, you should create ...does not support BPDU packet monitoring or other switches using VTP. - All participating switches support RSPAN. Note The RSPAN VLAN cannot be propagated to other Layer 2 switch protocols. • In a network consisting of all monitored traffic to the destination switch. • You can configure any VLAN as...
...network for use a unique RSPAN VLAN session on your switch. do not assign access ports to these conditions are limited to act only as source switches to ensure the delivery of only Catalyst 2950 or Catalyst 2955 switches, you must have special properties, you should create ...does not support BPDU packet monitoring or other switches using VTP. - All participating switches support RSPAN. Note The RSPAN VLAN cannot be propagated to other Layer 2 switch protocols. • In a network consisting of all monitored traffic to the destination switch. • You can configure any VLAN as...
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... the packet; You configure access lists on a Layer 2 switch to access a part of access control entries (ACEs). If you do not configure ACLs, all packets passing through a switch and permit or deny packets at switch interfaces. For example, you can limit network traffic and restrict...associated with ACLs Understanding ACLs Packet filtering can use ACLs to prevent another host from accessing the same network. 29-2 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide 78-11380-10 ACLs can allow e-mail traffic to allow Host A to be forwarded but to ...
... the packet; You configure access lists on a Layer 2 switch to access a part of access control entries (ACEs). If you do not configure ACLs, all packets passing through a switch and permit or deny packets at switch interfaces. For example, you can limit network traffic and restrict...associated with ACLs Understanding ACLs Packet filtering can use ACLs to prevent another host from accessing the same network. 29-2 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide 78-11380-10 ACLs can allow e-mail traffic to allow Host A to be forwarded but to ...