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Table Of Contents
Release Notes for the Catalyst 2950 Cisco IOS Release 12.0(5)WC2b
Installing the Required Plug-In
Creating Clusters with Different Releases of IOS Software
Connecting to the Cisco RPS 300
Compatibility with the CiscoWorks2000 RME Suite
Correction to the Hardware Installation Guide
Correction to the Software Configuration Guide
Configuring Netscape Communicator (All Versions)
Configuring Microsoft Internet Explorer (4.01)
Configuring Microsoft Internet Explorer (5.0)
Guidelines for Upgrading Switch Software
Overview of the Switch Upgrade Process
Which Software Files to Download from Cisco.com
Downloading the New Software and TFTP Server Application to Your Management Station
Copying the Current Startup Configuration from the Switch to a PC or Server
Using Cluster Manager to Upgrade One or More Switches
Using the CLI to Upgrade a Catalyst 2950 Switch
Using the CLI to Upgrade Member Switches
Upgrading Catalyst 2950, Catalyst 2900 XL or Catalyst 3500 XL Member Switches
Upgrading Catalyst 1900 or Catalyst 2820 Member Switches
Obtaining Technical Assistance
Release Notes for the Catalyst 2950 Cisco IOS Release 12.0(5)WC2b
February 2002
Cisco IOS Release 12.0(5)WC2b runs on Catalyst 2950 switches.
These release notes include important information about this IOS release and any limitations, restrictions, and caveats that apply to it. See the "Related Documentation" section for the complete list of Catalyst 2950 switch documentation.
Note
Before upgrading your switch to this release, read the "Upgrading the Switch Software" section.
This IOS release is part of a special release of Cisco IOS software that is not released on the same 8-week maintenance cycle that is used for other platforms. As maintenance releases and future IOS releases become available, they will be posted to Cisco.com in the Cisco IOS software area.
Contents
This document has these sections:
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System Requirements
This section describes these system requirements for IOS Release 12.0(5)WC2b:
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Hardware Supported
Table 1 lists the Catalyst 2950 switches supported by this IOS release.
Table 1 Catalyst 2950 Switches
Catalyst 2950-12
12 fixed autosensing 10/100 Ethernet ports
64
Catalyst 2950-24
24 fixed autosensing 10/100 Ethernet ports
64
Software Requirements
The minimum PC requirement is a Pentium processor running at 233 MHz with 64 MB of DRAM. The minimum UNIX workstation requirement is a Sun Ultra 1 running at 143 MHz with 64 MB of DRAM. Table 2 lists the recommended platforms.
The following operating systems are supported for web-based management:
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•
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Table 2 Recommended Platform Configuration for Web-Based Management
Windows NT 4.01
Pentium 300 MHz
128 MB
65536
1024 x 768
Small
Solaris 2.5.1
Sparc 333 MHz
128 MB
Most colors for applications
—
Small (3)
1 Service Pack 3 or higher required
Browser Support
You can access the web-based interfaces through the browsers listed in Table 3, which also lists the configuration that yields the best results for web-based management. The switch checks the browser version when starting a session to ensure that the browser is supported. If the browser is not supported, the switch displays an error message, and the session does not start.
Table 3 Browser Support for Web-Based Management
Netscape Communicator
4.611
4.61, 4.7x
Internet Explorer2
4.01a
4.01a, 5.0
1 Netscape Communicator 4.6 and 6.0 are not supported.
2 Not supported on Solaris 2.5.1 or higher.
Note
Installing the Required Plug-In
A browser Java plug-in is required to access the HTML-based Cluster Management Suite (CMS). Download and install the plug-in before you start CMS.
If the Java applet does not initialize after you have installed the plug-in, open the Java Plug-in Control Panel (Start > Programs > Java Plug-in Control Panel), and verify the following setting:
In the Proxies tab, verify that Use browser settings is checked and that no proxies are enabled.
If you are running McAfee VirusScan on Windows 2000 and the plug-in takes a long time to load, you can speed up CMS operation by disabling the VirusScan Internet Filter option, the Download Scan option, or both.
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or
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Windows 2000, Windows 95, Windows 98, and Windows NT 4.0 Users
These Java plug-ins are supported on the Windows platform:
Caution
plug-in 1.3.0.
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If you start CMS without having installed the required Java plug-in, the switch automatically detects this. If you are using a supported Internet Explorer browser, it automatically downloads and installs the plug-in. If you are using a supported Netscape browser, the browser displays a Cisco.com (previously Cisco Connection Online [CCO]) page that contains the Java plug-in and installation instructions. If you are using Windows 2000, Netscape Communicator might not detect the missing Java plug-in. You can download the plug-in from one of these URLs:
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http://www.cisco.com/pcgi-bin/tablebuild.pl/java
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http://www.cisco.com/pcgi-bin/tablebuild.pl/java
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This plug-in is not downloaded automatically. However, you can download it from this URL:
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http://www.cisco.com/pcgi-bin/tablebuild.pl/java
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http://www.cisco.com/pcgi-bin/tablebuild.pl/java
Note
Solaris Users
These Java plug-ins are supported on the Solaris platform:
Caution
plug-in 1.3.0.
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This plug-in is supported, but not provided on the Cisco.com URL.
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http://www.cisco.com/pcgi-bin/tablebuild.pl/java
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http://www.cisco.com/pcgi-bin/tablebuild.pl/java
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http://www.cisco.com/pcgi-bin/tablebuild.pl/java
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http://www.cisco.com/pcgi-bin/tablebuild.pl/java
Creating Clusters with Different Releases of IOS Software
Some versions of the Catalyst 2900 and 3500 XL software do not support clustering, and other versions do not support the features in this release. To ensure that all cluster switches are operating with the same level of software, we recommend that you upgrade all cluster switches to IOS Release 12.0(5.1)WC(1) or later.
If you have a cluster with switches that are running different versions of IOS software, changes on the latest release might not be reflected on switches running the older versions. For example, if you start Visual Switch Manager (VSM) on a switch running IOS Release 11.2(8)SA6, the windows and functionality can be different from a switch running IOS Release 12.0(5)WC2 or later.
Note
Release 12.0(5.1)XW or earlier, a Catalyst 2950 switch will show as an unknown device in Cluster Manager. In this case, you will need to use Visual Switch Manager (VSM) to manage the Catalyst 2950 switch.
Features
For a detailed list of key features for this software release, refer to the Catalyst 2950 Desktop Switch Software Configuration Guide.
Limitations and Restrictions
Review this section before you begin working with the switches. Some features might not work as documented, and some features could be affected by recent changes to the switch hardware or software.
Connecting to the Cisco RPS 300
The Catalyst 2950 switches support the Cisco RPS 300 Redundant Power System.
Note
Port Configuration Conflicts
Certain combinations of port features create configuration conflicts (see Table 4). If you try to enable incompatible features, CMS issues a warning message, and you cannot make the change. Reload the page to refresh CMS.
In Table 4, No means that the two referenced features are incompatible and should not both be enabled; Yes means that both can be enabled at the same time and will not cause an incompatibility conflict.
Using Commas in CMS
Host names and Domain Name System (DNS) server names that contain commas on a cluster command switch, member switch, or candidate switch can cause CMS to behave unexpectedly. You can avoid this instability in the interface by not using commas in host names or DNS names. Also, do not enter commas when entering multiple DNS names in the IP Configuration tab of the IP Management window in CMS.
SPAN Limitations
When using the Switched Port Analyzer (SPAN) feature, the monitoring port receives copies of transmitted and received traffic for all monitored ports. If the monitoring port is 50 percent oversubscribed for a sustained period of time, it will probably become congested. One or more of the ports being monitored might also experience a slowdown.
Compatibility with the CiscoWorks2000 RME Suite
When using the Software Image Management (SWIM) application in the Resource Manager Essentials (RME) suite of the CiscoWorks2000 product family to perform automated system software and boot loader upgrades, you should note the following:
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or 2.2.•
Ethernet Frame Size Support
The Catalyst 2950 switches support standard-size Ethernet frames (64 to1518 bytes).
Note
Documentation Notes
All documentation for this release, except for these release notes, is provided on the Catalyst 2950 Desktop Switch Documentation CD.
Documentation CD
To view the contents of this documentation CD, double-click the index.htm file. Your browser will launch, and you will be able to select and view the documents on the CD.
If your PC is set to automatically launch CDs, the index page opens when you insert the CD or when you click the CD icon. If you need more information about how to set your PC to automatically launch CDs, consult your PC operating system documentation or systems administrator.
Note
Correction to the Hardware Installation Guide
This information corrects an error in the Catalyst 2950 Desktop Switch Hardware Installation Guide.
Caution
Correction to the Software Configuration Guide
This information corrects an error in Chapter 5, "Creating and Managing VLANs," of the Catalyst 2950 Desktop Switch Software Configuration Guide. In the "CLI: Configuring CoS Priority Queues" section, the CLI procedure to configure the CoS priority queues is described. The CLI command for Step 4 should be show wrr-queue cos-map instead of show cos-map.
Caveats
Open Caveats
This section describes possible unexpected activity by IOS Release 12.0(5)WC2b:
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Source-based distribution port group does not share the broadcast with all the group members. When the destination of the packets is a broadcast or unknown unicast or multicast, the packets are forwarded only on one port member of a port group, instead of being shared among all members of the port group.
There is no workaround.
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If you shut down the management VLAN on VLAN1 on a Catalyst 2950 switch, set the management VLAN to 999, and then again use the shutdown command to shut down VLAN1, the IP address of VLAN 999 does not appear in the show cdp neighbor detail command display on a connected device.
The workaround is to reboot the switch.
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There are two problems that occur when the Catalyst 2950 switch is in transparent mode:
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There is no workaround.
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Internal loopback in half-duplex mode causes input errors. We recommend that the PHY is configured to operate in full duplex before setting internal loopback.
There is no workaround.
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When the Catalyst 2950 switch boots up without being configured, it prompts the user with a configuration dialog. The switch allows the user to skip the dialog and to enable traps without configuring a community string. If the host trap receiver is configured without defining the community strings, when the switch attempts to generate a trap, it fails and displays an error message.
The workaround is to follow the configuration sequence by creating a community string before configuring traps for the host.
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Aging of dynamic addresses does not always occur exactly after the specified aging time elapses. It might take up to three times this time period before the entries are removed from the table.
There is no workaround.
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When a MAC address is learned on a member of a port group created between a Catalyst 2950 and Catalyst 2900 or 3500 XL switch, the same MAC address gets deleted and relearned on another port member of the port group on the 2900 or 3500 XL switch. As a result, a real-time diagnostic message reports this address relearning behavior. The symptom does not affect the connectivity and is informational only.
The workaround is to upgrade the image on the Catalyst 2900 or 3500 XL switch to the IOS
Release 12.0(5.1)WC(1) or later.•
If any VLAN other than VLAN1 is configured as the management VLAN, the switch reports an incorrect shut down for VLAN1. VLAN1 is not administratively down even though the running configuration has shut down in VLAN1.
There is no workaround.
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The usage of the c2950BandwidthUsage Management Information Base (MIB) always shows zero, instead of displaying the current bandwidth usage statistics.
There is no workaround.
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If you launch the VMPS Configuration window from the device popup menu in Visual Switch Manager (VSM), it displays incorrect information.
The workaround is to not launch the VMPS Configuration window from the device popup menu, as VLAN Membership Policy Server (VMPS) is not supported on the Catalyst 2950 switches.
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If you launch VSM for a member switch, right-click the switch image to activate the device popup menu, and then left-click it to deactivate the popup menu, or if you select a port and deselect it, the Cluster Management icon on the toolbar is disabled and cannot be used to launch Cluster Management.
The workaround is to select Cluster > Cluster Management from the Cluster Management menu bar.
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The UniDirectional Link Detection (UDLD) protocol does not always detect a unidirectional link when there is a loop between the TX and RX strands on the same port (TX/RX loop condition).
This is an intermittent problem, and there is no workaround.
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If the switch gets configured from the dynamic IP pool, a duplicate or different IP address might be assigned.
The workaround is to make sure that the DHCP server contains reserved addresses that are bound to each switch by the switch hardware address so that the switch does not obtain its IP address from the dynamic pool.
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CMS dialogue windows can display two list selection boxes with Add and Remove buttons between them. If you press the Shift key on the keyboard at the same time as either the Add or Remove button, sometimes an exception error occurs. The exception error appears only inside the Java console window and is not displayed by CMS. As a result of the exception error, the Add or Remove buttons might not function correctly. If you continue to click them, multiple entries are added to the available or selected list.
The workaround is to not hold down the Shift key when clicking Add or Remove.
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Cluster Management Suite requires a Java plug-in from Sun Microsystems. If you are using Internet Explorer and you disable Java plug-ins by using the Java Plug-In Control Panel, the initial Splash screen shows that the plug-in and Java are enabled, but Internet Explorer fails.
The workaround is to not disable Java plug-ins on the Java Plug-In Control Panel.
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If you right-click a device that is near the edge of the browser window, the second-level menu of the device pop-up menu might not display.
The workaround is to right-click again on the device until the pop-up menu displays correctly.
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The Cluster Manager System Time Management window supports the configuration of the Network Time Protocol (NTP) and system time. When you make changes on this window from a command switch, Java propagates the changes to all cluster members. A conflict can arise if you configure NTP and also use the Set Daylight Saving Time and Set Current Time tabs.
To avoid a possible conflict, either set the system time for the entire cluster on the command switch, or configure NTP on the command switch to use an NTP server to provide time to the cluster. Do not use both methods at the same time.
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You can use Cluster Manager to configure an Hot Standby Router Protocol (HSRP) standby group and bind it to a cluster. However, you cannot use Cluster Manager to configure more than one standby group. If you want to configure more than one standby group, use the command-line interface (CLI).
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When changing the management VLAN on a cluster with command-switch redundancy enabled, the cluster can break if HSRP is configured on any of the cluster members in the new management VLAN.
The workaround is to not change the management VLAN to a VLAN where a member is configured as part of a standby group.
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Root guard is inconsistent when configured on a port that is in the STP blocked state at the time of configuration.
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HSRP does not support a virtual MAC address entry or a built-in address (BIA) for a cluster.
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All members of an HSRP standby group must be cluster members.
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If the storm control filter is enabled for unicast, multicast, or broadcast traffic and the rising threshold is reached, all traffic on the port is filtered. No unicast, multicast, or broadcast traffic is forwarded from the port.
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Cisco IOS does perform some checks on entered IP addresses. For example, it does not allow the broadcast address to be entered. However, it does not check for the broadcast address on the same subnet as the HSRP Versatile Interface Processor (VIP) or the management VLAN IP address. This means that you could configure HSRP with a virtual IP address that is the same as the network broadcast address.
There is no workaround.
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If you use the command switch DNS server name to start CMS for a member that is running an earlier software release, CMS might not display the switch image, or it might display the command switch image. This can also occur when a standby group is configured for a cluster and you access CMS by entering the command-switch IP address and not the virtual IP address.
The workaround is to always use the command-switch IP address to access CMS. If a standby group is configured for a cluster, always use the virtual IP address to access CMS.
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CMS can behave unexpectedly if host names or DNS server names that it processes contain commas. This means that host names or DNS server names on a cluster command switch, member, or neighbor can cause instability in the HTML interface.
The workaround is to not include commas in host names or DNS server names in CMS.
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If you click the list of switches in CMS and press the Page Down key on the keyboard, the entire list moves to the bottom of the window. This only happens with Windows NT.
The workaround is to collapse the list into a single icon, which returns the list to the top of the window.
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In VSM, you cannot see the individual menu items when you right-click the chassis image to display the device pop-up menu.
The workaround is to right-click another part of the chassis image to display the device pop-up menu.
Resolved Caveats
These problems were resolved in Cisco IOS Release 12.0(5)WC2b:
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An error can occur with management protocol processing. Please use the following URL for further information:
http://www.cisco.com/pcgi-bin/Support/Bugtool/onebug.pl?bugid=CSCdw65903
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A command switch no longer fails when it receives SNMP packets that have invalid variable bindings.
These problems were resolved in Cisco IOS Release 12.0(5)WC2:
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If you are copying the configuration file using ciscoConfigCopyMIB from a Catalyst 2950 switch by using Simple Network Management Protocol (SNMP) manager, the switch no longer reloads the configuration.
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A broadcast storm no longer occurs when two 100BASE-FX ports on a Catalyst 2950 switch are connected to the 100BASE-FX ports on another Catalyst 2950 switch if these ports are in trunk mode and one of the ports is administratively down.
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If the management VLAN is changed to any other VLAN from VLAN 1 and VLAN 1 is shut down, the IP address configured in the new management VLAN now appears in the show cdp neighbor detail privileged EXEC command.
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When you use the show rmon history EXEC command, the value for the collision is now unique for each sample.
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The ifSpeed of the interfaces now reports the default value of the visible bandwidth when the link is down and reports the configured and assigned values when the link is up.
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The clear counters and clear counters fastethernet <port> interface commands now clear the port security counters. These commands also clear the other counters for the interface.
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Changing the VLAN Trunking Protocol (VTP) mode to transparent no longer causes a virtual type terminal session to lock up when executing commands, such as the show vlan privileged EXEC command, that require access to the VLAN- and VTP-related data.
In addition, ports that were shut down during VTP mode change now come back up automatically when VTP is stable.
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The output count displayed by the show interface privileged EXEC command output now displays correctly when the count is greater than 4,294,967,296 packets.
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When performing an snmpwalk SNMP operation on the dot1dTpFdbTable (1.3.6.1.2.1.17.4.3), the response no longer omits all entries of show mac in the display in which the first byte of the host MAC address is greater than 0x00.
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High CPU utilization no longer occurs when a switch boots with a VLAN (without an IP address) in the shutdown state while another active VLAN has an IP address.
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Enabling spanning-tree UplinkFast no longer causes brief spanning-tree loops if the configuration message from the root switch of the spanning tree ages out.
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When the Catalyst 2950 switch boots up without being configured, it prompts the user with a configuration dialog. The switch allows the user to skip the dialog and to enable traps without configuring a community string. If the host trap receiver is configured without defining the community strings, when the switch attempts to generate a trap, it fails and displays an error message.
The workaround is to follow the configuration sequence by creating a community string before configuring traps for the host.
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When you change the privilege level for interface on the Catalyst 2950 switches, you can execute commands with the newly configured privilege level. The switch now saves the arguments associated with the command, and after a reload, the configured commands are executable.
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If the Catalyst 2950 switch contains multicast addresses, the MIB walk of Dot1dTpFdbEntry no longer consumes excess CPU cycles on the switch.
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If you continuously ping a switch from a PC and the links from the switch to the network are brought down, when the link from the switch to the network is restored, pinging now resumes.
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The no snmp-server enable traps snmp [authentication] global configuration command is not supported by this software release.
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The 100BASE-FX ports in a Fast EtherChannel port group no longer loop packets when the connected device resets or reloads.
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If the switch has a MAC address of 00xx.xxxx.xxxx, it no longer halts after the no port security and clear mac-address-table secure commands are entered.
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The SNMP walk of the Dot1dTpFdbTable no longer causes the switch to halt and put an SNMP CPU HOG error message in the logging buffer.
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SNMP MIB variables etherStatsEntry does not display any values in Cisco IOS Release 12.0(5)XU or later.
There is no workaround.
This problem was resolved in Cisco IOS Release 12.0(5.3)WC(1):
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When IGMP packets are received on a port for a non-existent VLAN, the Catalyst 2950 switch no longer loses buffer space on that port.
Initial Configuration
You can assign IP information to your switch in these ways:
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Using the Setup Program
You can use an automatic setup program to assign switch IP information, host and cluster names, and passwords and to create a default configuration for continued operation. Later, you can use CMS or the command-line interface (CLI) to customize your configuration. To run the setup program, access the switch from the PC terminal that you connected to the console port. For information about connecting a PC or terminal to the switch console port, refer to the switch hardware installation guide.
The first time that you access the switch, it runs a setup program that prompts you for IP and other configuration information necessary for the switch to communicate with local routers and the Internet. This information is also required if you plan to use CMS to configure and manage the switch.
Note
You will need the following information from your system administrator:
Use this procedure to create an initial configuration for the switch:
Note
--- System Configuration Dialog ---At any point you may enter a question mark '?' for help.Use ctrl-c to abort configuration dialog at any prompt.Default settings are in square brackets '[]'.
Step 1
Continue with configuration dialog? [yes/no]: yStep 2
Enter IP address: ip_addressStep 3
Enter IP netmask: ip_netmaskStep 4
Would you like to enter a default gateway address? [yes]: yStep 5
IP address of the default gateway: ip_addressStep 6
Note
Enter a host name: host_nameStep 7
Note
Enter enable secret: secret_passwordStep 8
Would you like to configure a Telnet password? [yes] y
Note
Step 9
Enter Telnet password: telnet_passwordStep 10
Note
Would you like to enable as a cluster command switch? yStep 11
Enter cluster name: cls_name
Note
Step 12
The following configuration command script was created: ip subnet-zero interface VLAN1 ip address 172.20.153.36 255.255.255.0 ip default-gateway 172.20.153.1 hostname host_name enable secret 5 $1$M3pS$cXtAlkyR3/6Cn8/ line vty 0 15password telnet_password snmp community private rw snmp community public ro cluster enable cls_name endStep 13
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Use this configuration? [yes/no]: yAfter you complete the setup program, the switch can run the created default configuration. If you want to change this configuration or want to perform other management tasks, use one of these tools:
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The switch software configuration guide provides more information about how to set a password to protect the switch against unauthorized Telnet access and how to access the switch if you forget the password.
Accessing CMS
A browser plug-in is required to access CMS. See the "Installing the Required Plug-In" section. After you have assigned an IP address to the switch and installed the plug-in, you can access the switch from your browser and use the Cluster Management application to configure other switches. To use the web-based tools, see the "Software Requirements" section to set up the appropriate browser options.
Configuring Netscape Communicator (All Versions)
Follow these steps to configure Netscape Communicator:
Step 1
Step 2
Step 3
Step 4
Step 5
Step 6
Step 7
Configuring Microsoft Internet Explorer (4.01)
Follow these steps to configure Microsoft Internet Explorer 4.01:
Step 1
Step 2
Step 3
a.
b.
Step 4
a.
b.
Configuring Microsoft Internet Explorer (5.0)
Note
Follow these steps to configure Microsoft Internet Explorer 5.0:
Step 1
Step 2
Step 3
a.
b.
Step 4
a.
b.
If you are using Microsoft Internet Explorer 5.0 to make configuration changes to the switch, note that this browser does not automatically reflect the latest configuration changes. Make sure you click the browser Refresh button for every configuration change.
Displaying the Access Page
After the browser is configured, display the Cluster Management Suite access page:
Step 1
Step 2
Step 3
Upgrading the Switch Software
This section provides topics about upgrading the switch software:
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Note
Note
Guidelines for Upgrading Switch Software
When using Cluster Manager to upgrade multiple switches from the Cisco TFTP server, the Cisco TFTP server application can handle multiple requests and sessions. When using Cluster Manager to upgrade multiple switches from the Cisco TFTP server, you must first disable the TFTP Show File Transfer Progress and the Enable Logging options to avoid TFTP server failures. If you are performing multiple-switch upgrades with a different TFTP server, it must be capable of managing multiple requests and sessions at the same time.
Overview of the Switch Upgrade Process
The software upgrade procedure consists of these major steps:
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•
The tar command extracts the IOS image and the HTML files from the combined .tar file during the TFTP copy to the switch.
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•
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When you upgrade a switch, the switch continues to operate while the new software is copied to Flash memory. If Flash memory has enough space, the new image is copied to the selected switch but does not replace the running image until you reboot the switch. If a failure occurs during the copy process, you can still reboot your switch by using the old image. If Flash memory does not have enough space for two images, the new image is copied over the existing one. Features provided by the new software are not available until you reload the switch.
Which Software Files to Download from Cisco.com
New software releases are posted on Cisco.com and are also available through authorized resellers.
Table 5 describes the file extensions and what they mean for the upgrade procedure. It is easier to upgrade the switch software by using a combined .tar file that contains the HTML files and the IOS image. The upgrade procedures in these release notes describe how to perform the upgrade by using a combined .tar file, and you must use a combined .tar file to upgrade a switch through the CMS.
Table 6 lists the software files for this IOS release.
Note
Table 6 Catalyst 2950 Cisco IOS Software Files
c2950-c3h2s-mz.120-5.WC2b.bin
IOS image file
c2950-c3h2s-mz.120-5.WC2b.tar
IOS image file and HTML files
Downloading the New Software and TFTP Server Application to Your Management Station
Follow these steps to download the new software and, if necessary, the TFTP server application, from Cisco.com to your management station:
Step 1
Step 2
If you have a SmartNet support contract, go to this URL, and download the appropriate files:
http://www.cisco.com/pcgi-bin/tablebuild.pl/cat2950
If you do not have a SmartNet contract, go to this URL, and download the appropriate files:
http://www.cisco.com/pcgi-bin/tablebuild.pl/cat2950
Step 3
The readme.txt file describes how to download the TFTP server application. New features provided by the software are not available until you reload the software.
Copying the Current Startup Configuration from the Switch to a PC or Server
When you make changes to a switch configuration, your changes become part of the running configuration. When you enter the command to save those changes to the startup configuration, the switch copies the configuration to the config.text file in Flash memory. To ensure that you can recreate the configuration if a switch fails, you might want to copy the config.text file from the switch to a PC or server.
The following procedure requires a configured TFTP server such as the Cisco TFTP server available on Cisco.com.
Beginning in privileged EXEC mode, follow these steps to copy a switch configuration file to the PC or server that has the TFTP server application:
Step 1
switch# copy flash:config.text tftpStep 2
Address or name of remote host []? ip_addressStep 3
Destination filename [config.text]? yes/noStep 4
Using Cluster Manager to Upgrade One or More Switches
You can use the Software Upgrade feature of the Cluster Manager to upgrade all or some of the switches in a cluster at once. Consider the following conditions when doing an upgrade:
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•
•
•
Follow these steps to use Cluster Manager to upgrade software. Refer to the online help for more details.
Step 1
Step 2
You can enter just the filename or a pathname into the New Image File Name field. You do not need to enter a pathname if the image file is in the directory that you have defined as the TFTP root directory.
Note
Note
On Catalyst 2950, Catalyst 2900 XL, and Catalyst 3500 XL switches, new images are copied to Flash memory and do not affect operation. The switch checks Flash memory to ensure that there is sufficient space before the upgrade takes place. If there is enough space, the new image is copied to the switch without replacing the old image, and after the new image is completely downloaded, the old one is erased. In this case, you can still reboot your switch by using the old image if a failure occurs during the copy process.
If there is not enough space in Flash memory for the new and old images, the old image is deleted, and the new image is downloaded.
Note
Using the CLI to Upgrade a Catalyst 2950 Switch
This procedure is for upgrading Catalyst 2950 switches by copying the combined .tar file to the switch. You copy the files to the switch from a TFTP server and extract the files by entering the tar command, with the following results:
•
•
•
Follow these steps to upgrade the switch software by using a TFTP transfer:
Step 1
Step 2
To start a Telnet session on your PC or workstation, enter the following command:
server% telnet switch_ip_addressEnter the Telnet password if you are prompted to do so.
Step 3
switch> enable switch#Enter the password if you are prompted to do so.
Step 4
switch# show boot BOOT path-list: flash:current_image Config file: flash:config.text Enable Break: 1 Manual Boot: no HELPER path-list: NVRAM/Config file buffer size: 32768Step 5
Step 6
switch# rename flash:current_image flash:new_image Source filename [current_image]? Destination filename [new_image]?For example:
switch# rename flash:c2950-c3h2s-mz.120-5.WC2.bin flash:c2950-c3h2s-mz.120-5.WC2b.binStep 7
switch# dir flash: Directory of flash:/Directory of flash:/3 drwx 10176 Mar 01 2001 00:04:34 html6 -rwx 2343 Mar 01 2001 03:18:16 config.text171 -rwx 1667997 Mar 01 2001 00:02:39 c2950-c3h2s-mz.120-5.WC2b.bin7 -rwx 3060 Mar 01 2001 00:14:20 vlan.dat172 -rwx 100 Mar 01 2001 00:02:54 env_vars7741440 bytes total (4788224 bytes free)Step 8
switch# configure terminal Enter configuration commands, one per line. End with CNTL/Z.Step 9
switch(config)# no IP http serverStep 10
switch(config)# boot system flash:new_imageFor example:
switch(config)# boot system flash:c2950-c3h2s-mz.120-5.WC2b.bin
Note
Step 11
switch(config)# endStep 12
switch# delete flash:html/*Press Enter to confirm the deletion of each file. Do not press any other keys during this process.
Caution
Step 13
switch# tar /x tftp://server_ip_address//path/filename.tar flash: Loading /path/filename.tar from server_ip_address (via VLAN1):!) extracting info (110 bytes)extracting c2950-c3h2s-mz.120-5.WC2b.bin (7741440 bytes)!!!!!!!!!!!!!!!!!!!!html/ (directory)extracting html/Detective.html.gz (1139 bytes)!extracting html/ieGraph.html.gz (553 bytes)extracting html/DrawGraph.html.gz (787 bytes)extracting html/GraphFrame.html.gz (802 bytes)!...Depending on the TFTP server being used, you might need to enter only one slash (/) after the server_ip_address in the tar command.
Step 14
switch# config terminal Enter configuration commands, one per line. End with CNTL/Z.Step 15
switch(config)# IP http serverStep 16
switch(config)# endStep 17
switch# reload System configuration has been modified. Save? [yes/no]:y Proceed with reload? [confirm]Step 18
Your Telnet session ends when the switch resets.
After the switch reboots, use Telnet to return to the switch, and enter the privileged EXEC mode show version command to verify the upgrade procedure. If you have a previously opened browser session to the upgraded switch, close the browser, and start it again to ensure that you are using the latest HTML files.
Using the CLI to Upgrade Member Switches
Because a member switch might not be assigned an IP address, command-line software upgrades through TFTP are managed through the command switch.
This section provides these procedures:
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Upgrading Catalyst 2950, Catalyst 2900 XL or Catalyst 3500 XL Member Switches
Follow these steps to upgrade the software on a member switch:
Step 1
switch# show cluster membersFrom the display, select the number of the member switch that you want to upgrade. The member number is in the SN column of the display. You need this member number for Step 2.
Step 2
switch# rcommand 1Step 3
switch-1# tar /x tftp://server_ip_address//path/filename.tar flash:Source IP address or hostname [server_ip_address]? Source filename [path/filename]? Destination filename [flash:new_image]? Loading /path/filename.bin from server_ip_address (via!) [OK - 843975 bytes]Step 4
switch-1# reload System configuration has been modified. Save? [yes/no]:y Proceed with reload? [confirm]Press Enter to start the download.
You lose contact with the switch while it reloads the software. For more information on the rcommand, refer to the Catalyst 2950 Desktop Switch Command Reference.
Upgrading Catalyst 1900 or Catalyst 2820 Member Switches
Follow these steps to upgrade the software on a Catalyst 1900 or Catalyst 2820 member switch:
Step 1
switch# show cluster membersFrom the display, select the number of the member switch that you want to upgrade. The member number is in the SN column of the display. You need this member number for Step 2.
Step 2
switch# rcommand 1Step 3
The Telnet session accesses the menu console (the menu-driven interface) if the command switch password is privilege level 15. If the command switch password is privilege level 1, you are prompted for the password.
You lose contact with the switch while it reloads the software.
Step 4
switch-1# copy tftp://host/src_file opcodeFor example, copy tftp://spaniel/op.bin opcode downloads new system operational code op.bin from the host spaniel.
You should see the TFTP successfully downloaded operational code message. When the download is complete, the switch resets and begins using the new software. If this message does not appear, refer to the installation and configuration guide that shipped with your switch for more information.
You can also upgrade the switch software through the Firmware Configuration menu from the menu console. For more information, refer to the installation and configuration guide that shipped with your switch.
You lose contact with the switch while it reloads the software.
Related Documentation
You can order printed copies of documents with a DOC-xxxxxx= number. For more information, see the "Obtaining Documentation" section.
These publications provide more information about the switches:
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Obtaining Documentation
The following sections explain how to obtain documentation from Cisco Systems.
World Wide Web
You can access the most current Cisco documentation on the World Wide Web at the following URL:
Translated documentation is available at the following URL:
http://www.cisco.com/public/countries_languages.shtml
Documentation CD-ROM
Cisco documentation and additional literature are available in a Cisco Documentation CD-ROM package, which is shipped with your product. The Documentation CD-ROM is updated monthly and may be more current than printed documentation. The CD-ROM package is available as a single unit or through an annual subscription.
Ordering Documentation
Cisco documentation is available in the following ways:
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http://www.cisco.com/public/ordsum.html
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http://www.cisco.com/go/subscription
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Documentation Feedback
If you are reading Cisco product documentation on Cisco.com, you can submit technical comments electronically. Click Leave Feedback at the bottom of the Cisco Documentation home page. After you complete the form, print it out and fax it to Cisco at 408 527-0730.
You can e-mail your comments to bug-doc@cisco.com.
To submit your comments by mail, use the response card behind the front cover of your document, or write to the following address:
Cisco Systems
Attn: Document Resource Connection
170 West Tasman Drive
San Jose, CA 95134-9883We appreciate your comments.
Obtaining Technical Assistance
Cisco provides Cisco.com as a starting point for all technical assistance. Customers and partners can obtain documentation, troubleshooting tips, and sample configurations from online tools by using the Cisco Technical Assistance Center (TAC) Web Site. Cisco.com registered users have complete access to the technical support resources on the Cisco TAC Web Site.
Cisco.com
Cisco.com is the foundation of a suite of interactive, networked services that provides immediate, open access to Cisco information, networking solutions, services, programs, and resources at any time, from anywhere in the world.
Cisco.com is a highly integrated Internet application and a powerful, easy-to-use tool that provides a broad range of features and services to help you to
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You can self-register on Cisco.com to obtain customized information and service. To access Cisco.com, go to the following URL:
Technical Assistance Center
The Cisco TAC is available to all customers who need technical assistance with a Cisco product, technology, or solution. Two types of support are available through the Cisco TAC: the Cisco TAC Web Site and the Cisco TAC Escalation Center.
Inquiries to Cisco TAC are categorized according to the urgency of the issue:
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Which Cisco TAC resource you choose is based on the priority of the problem and the conditions of service contracts, when applicable.
Cisco TAC Web Site
The Cisco TAC Web Site allows you to resolve P3 and P4 issues yourself, saving both cost and time. The site provides around-the-clock access to online tools, knowledge bases, and software. To access the Cisco TAC Web Site, go to the following URL:
All customers, partners, and resellers who have a valid Cisco services contract have complete access to the technical support resources on the Cisco TAC Web Site. The Cisco TAC Web Site requires a Cisco.com login ID and password. If you have a valid service contract but do not have a login ID or password, go to the following URL to register:
http://www.cisco.com/register/
If you cannot resolve your technical issues by using the Cisco TAC Web Site, and you are a Cisco.com registered user, you can open a case online by using the TAC Case Open tool at the following URL:
http://www.cisco.com/tac/caseopen
If you have Internet access, it is recommended that you open P3 and P4 cases through the Cisco TAC Web Site.
Cisco TAC Escalation Center
The Cisco TAC Escalation Center addresses issues that are classified as priority level 1 or priority level 2; these classifications are assigned when severe network degradation significantly impacts business operations. When you contact the TAC Escalation Center with a P1 or P2 problem, a Cisco TAC engineer will automatically open a case.
To obtain a directory of toll-free Cisco TAC telephone numbers for your country, go to the following URL:
http://www.cisco.com/warp/public/687/Directory/DirTAC.shtml
Before calling, please check with your network operations center to determine the level of Cisco support services to which your company is entitled; for example, SMARTnet, SMARTnet Onsite, or Network Supported Accounts (NSA). In addition, please have available your service agreement number and your product serial number.
This document is to be used in conjunction with the documents listed in the "Related Documentation" section.
Copyright © 2001-2002, Cisco Systems, Inc.
All rights reserved.
