Release Notes for the Catalyst 3750 Switch Cisco IOS Release 12.1(14)EA1 July 2003 The Cisco IOS Release 12.1(14)EA1 runs on all Catalyst 3750 switches. Catalyst 3750 switches support stacking through Cisco StackWise technology. Unless otherwise noted, the term switch refers to a standalone switch and to a switch stack. These release notes include important information about this Cisco IOS release and any limitations, restrictions, and caveats that apply to it.
Contents Contents This information is in the release notes: • “System Requirements” section on page 2 • “Downloading Software” section on page 4 • “Installation Notes” section on page 7 • “New Features” section on page 13 • “Limitations and Restrictions” section on page 15 • “Important Notes” section on page 20 • “Open Caveats” section on page 22 • “Resolved Caveats” section on page 26 • “Documentation Updates” section on page 30 • “Related Documentation” section on page 30 • “Obtainin
System Requirements Software Compatibility For information about the recommended platforms for web-based management, operating systems and browser support, Java plug-in guidelines and installation procedures, refer to the Catalyst 3750 Switch Hardware Installation Guide. Creating Clusters with Different Releases of Cisco IOS Software When a cluster consists of a mixture of Catalyst switches, the Catalyst 3750 must be the command switch.
Downloading Software Note The CMS is not forward-compatible, which means that if a member switch is running a software version that is newer than the release running on the command switch, the new features are not available on the member switch. If the member switch is a new device supported by a software release that is later than the software release on the command switch, the command switch cannot recognize the member switch, and it is displayed as an unknown device in the Front Panel view.
Downloading Software Determining Which Files to Use The upgrade procedures in these release notes describe how to perform the upgrade by using a combined .tar file. This file contains both the Cisco IOS image file and the files needed for the CMS. You must use the combined .tar file to upgrade the switch through the CMS. To upgrade the switch through the CLI, use the .tar file and the archive download-sw privileged EXEC command. Table 3 lists the software filenames for this software release.
Downloading Software • If you do not have a SmartNet contract, go to this URL and follow the instructions to register on Cisco.com and download the appropriate files: http://www.cisco.com/public/sw-center/sw-lan.shtml To download the SMI and EMI files, select Catalyst 3750 software. To obtain authorization and to download the crypto software files, select Catalyst 3750 3DES Cryptographic Software.
Installation Notes Installation Notes You can assign IP information to your switch by using these methods: Note • The Express Setup program (See the procedure that follows). • The setup program (Refer to the Catalyst 3750 Switch Hardware Installation Guide.) • The Dynamic Host Configuration Protocol (DHCP)-based autoconfiguration (Refer to the Catalyst 3750 Switch Software Configuration Guide.) • Manually assigning an IP address (Refer to the Catalyst 3750 Switch Software Configuration Guide.
Installation Notes Note The illustrations in this section show the Catalyst 2940 switch, but the Mode button, LEDs, and switch ports are similar on your switch. Starting Express Setup Before starting Express Setup, verify that the switch has passed the power-on self-test (POST). The SYST and STAT LEDs are green if the switch has passed POST. For information about troubleshooting a POST failure, refer to the switch hardware installation guide. You cannot start Express Setup until POST has completed.
Installation Notes Caution Do not connect the switch to any device other than the PC or workstation being used to configure it. Figure 2 Connecting the Switch and PC or Workstation Ethernet Ports 1 SYST 1x STAT DPLX 2x 3x SPD MODE 4x 5x 6x 7x 8x 9 SFP Catalyst 29 40 SERIES 1 100Base-F X 3 Step 5 1 Switch 3 2 Ethernet cable 89491 2 PC or workstation Connect the other end of the cable to the Ethernet port on the PC or workstation.
Installation Notes Figure 4 Express Setup Home Page If the Express Setup does not run, or the Express Setup home page does not appear in your browser: • Did you wait 30 seconds after connecting the switch and PC or workstation before entering the IP address in your browser? If not, wait 30 seconds and re-enter 10.0.0.1 and press Enter. • Did you enter the wrong address in your web browser, or is there an error message displayed in the browser window? Re-enter 10.0.0.1 and press Enter.
Installation Notes Follow these steps to configure your switch with Express Setup: Step 1 Contact your system administrator and obtain the IP address, the IP subnet mask, and the default gateway for your switch. Step 2 Enter the IP address of the switch in the IP Address field. Step 3 Click the drop-down arrow in the IP Subnet Mask field, and select an IP Subnet Mask. Step 4 Enter the IP address for the default gateway in the Default Gateway field.
Installation Notes Verifying Switch IP Address (Optional) After you have installed the switch in your network, follow these steps to verify the IP address configured on your switch: Step 1 Launch a web browser on a PC or workstation that is connected the network. Step 2 Enter the IP address of your switch (for example: 172.20.139.142.) The switch home page appears, as shown in Figure 5.
New Features Clearing the Switch IP Address and Configuration If you have configured a new switch with a wrong IP address, or all the switch LEDs start blinking when you are trying to enter Express Setup mode, you can clear the IP address that is configured on the switch. Note This procedure clears the IP address and all configuration information stored on the switch. Do not follow this procedure unless you want to completely reconfigure the switch.
New Features • Rapid per-VLAN Spanning-Tree plus (Rapid-PVST+) based on IEEE 802.
Limitations and Restrictions • Layer 2 traceroute to identify the physical path that a packet takes from a source device to a destination device For a detailed list of key features for this software release, refer to the Catalyst 3750 Switch Software Configuration Guide. Limitations and Restrictions You should review this section before you begin working with the switch. These are known limitations that will not be fixed, and there is not always a workaround.
Limitations and Restrictions • IGMP filtering is applied to packets that are forwarded through hardware. It is not applied to packets that are forwarded through software. Hence, with multicast routing enabled, the first few packets are sent from a port even when IGMP filtering is set to deny those groups on that port. There is no workaround. (CSCdy82818) • A static IP address might be removed when the previously acquired Dynamic Host Configuration Protocol (DHCP) IP address lease expires.
Limitations and Restrictions • If a Catalyst 3750 switch stack is connected to a designated bridge and the root port of the switch stack is on a different switch than the alternate root port, changing the port priority of the designated ports on the designated bridge has no effect on the root port selection for the Catalyst 3750 switch stack. There is no workaround. (CSCea40988) • A route map that contains an ACL with a DSCP clause cannot be applied to a Layer 3 interface.
Limitations and Restrictions • The egress SPAN data rate might degrade when fallback bridging or multicast routing is enabled. The amount of degradation depends on the processor loading. Typically, the switch can egress SPAN up to 40,000 packets per second (64-byte packets). As long as the total traffic being monitored is below this limit, there is no degradation. However, if the traffic being monitored exceeds the limit, only a portion of the source stream is spanned.
Limitations and Restrictions CMS Limitations and Restrictions These limitations apply to CMS configuration: • 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. Do not enter commas when entering multiple DNS names in the IP Configuration tab of the IP Management window in CMS.
Important Notes • The CMS window does not return to full size after you resize elements when using Netscape version 6.xx on Solaris and Linux. This is a Netscape browser problem. There is no workaround. (CSCea01179) • CMS files that are downloaded from the switch to the local client machine are not cached on the local drive. As the result. the CMS files are downloaded every time CMS is invoked. There is no workaround. (CSCea26211) • CMS sometimes halts after you click Apply when using Netscape 4.
Important Notes Cluster Notes There are no cluster configuration notes to report. CMS Notes These notes apply to CMS configuration: • If you use CMS on Windows 2000, it might not apply configuration changes if you change the enable password from the CLI during your CMS session. You have to restart CMS and enter the new password when prompted. Platforms other than Windows 2000 prompt you for the new enable password when it is changed.
Open Caveats Open Caveats These are the open caveats with possible unexpected activity in this software release: • “Open Cisco IOS Caveats” section on page 22 • “Open CMS Caveats” section on page 25 Open Cisco IOS Caveats These are the severity 3 Cisco IOS configuration caveats: • CSCdz30046 When multicast VLAN registration (MVR) groups are added or deleted, the receiver port that joined the groups after the addition still receives traffic even after the group is deleted.
Open Caveats – The VLAN assigned by the RADIUS server is different than the access VLAN configured on the port. This problem does not prevent traffic from being forwarded to the 802.1X client, but the show port-security privileged EXEC command might indicate that the port is SecureDown when it is actually SecureUp and forwarding traffic correctly. The workaround is to restart the interfaces that appear to be out of sync by using the shutdown and then no shutdown interface configuration commands.
Open Caveats – The port learns the MAC address of multiple hosts. – VLAN assignment is not enabled for the authorized host. The workaround is to disable and then re-enable port security on the port. • CSCeb37125 If a switch stack is running fallback bridging and the switches in the switch stack have routed ports in the bridge-group, fallback bridging might not work. This occurs when the TCAM is full and a switch is added or deleted from the switch stack.
Open Caveats • CSCeb66720 When CDP is disabled on a stack member interface and that interface is converted to a routed port or switch port, CDP is re-enabled on the stack member interfaces. Having CDP enabled on a stack member but not on the stack master can cause the 802.1X voice VLAN and inline power features to fail on the stack member. The workaround is to enable and then disable CDP on the interface.
Resolved Caveats • CSCeb25630 The Link Graphs bar chart for Packet Drops & Errors might display erroneous errors for Ethernet interfaces. The workaround is to use the show interfaces or show interfaces counter privileged EXEC commands command. • CSCeb38514 Sometimes a switch stack icon disappears from the topology view. This can occur if one of the switch stack members goes down or a switch stack member is disconnected from the stack. The workaround is to close the CMS browser and launch CMS again.
Resolved Caveats • CSCdy40828 If the switch stack is a designated bridge in the LAN and another switch is connected to the switch stack through redundant links and has one of these redundant ports in a blocking state, the spanning-tree state topology is now the same after configuration changes in the LAN. For example, if the root bridge has ports that go down and then come back up, the switch stack remains a designated bridge after the spanning-tree state stabilizes.
Resolved Caveats • CSCea02851 When you are in policy-map class configuration mode and configure an aggregate policer with the police aggregate policy-map class configuration command, causing the number of aggregate policers to exceed 63, the aggregate policer is no longer retained in the policy map. • CSCea21883 Under some heavy load conditions with bridge groups and SPAN enabled (where the packets are dropped at the port because of flooding), the %SUPQ-4-CPUHB_RECV_STARVE message no longer appears.
Resolved Caveats – Dynamic Trunking Protocol (DTP) could fail to work properly on trunks that are carrying the RSPAN VLAN. – Port Aggregration Protocol (PAgP) could fail to work properly on EtherChannels that are carrying the RSPAN VLAN. – VLAN Trunking Protocol (VTP) could incorrectly propagate VTP pruning messages on the wrong interface. For example, a pruning message intended for an RSPAN source port could also appear on the trunk port carrying the RSPAN VLAN.
Documentation Updates • CSCea16267 When you select the Device > QoS > Policies window and try to modify a policy, you no longer receive a null-pointer exception error that prevents you from modifying the policy. The error previously occurred when a policy class had an ACL match statement that was deleted.
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