Communities: Chinese Japanese Korean. All Rights Reserved. The Cisco Learning Network. Enterprise Certifications Community. View This Post. Edited February 16, at AM. Hi all, Please help with the following issue : I'm trying to upgrade the IOS from version to version Process should be: 1. Thanks to all help. Here is the show info :. Hi RiON, Sharp eyes Switch config config-register 0x Log In to Answer.
Related Questions Nothing found. More locations. More flexibility. Follow Us. Certifications Help About Us. The following sections describe how to upgrade your switch software:. Step 1 Directly connect a serial cable to the console port. Note This section assumes that the console baud rate is set to default. If you want to use a different baud rate, change the configuration register value for your switch.
Step 3 Use the dir bootflash: command to ensure that there is sufficient space in Flash memory to store the PROM upgrade image.
If there is insufficient space, delete one or more images, and then issue the squeeze bootflash: command to reclaim the space. The following example shows the output from a successful upgrade, followed by a system reset:. Step 8 Use the delete command to delete the PROM upgrade program from bootflash and the squeeze command to reclaim unused space.
This procedure can be used when console access is not available and when the ROMMON upgrade must be performed remotely. Step 1 Establish a Telnet session to the supervisor engine. Note In the following discussion, we assume that at least one IP address has been assigned to either an SVI or a routed port.
Note The config-register must be set to autoboot. Step 6 Use the show bootvar command to verify the boot string. Then, the upgrade software will reload and the supervisor engine will load the Cisco IOS software image.
Issuing this command will terminate your Telnet session. This step could take minutes to complete. You will need to reconnect your Telnet session after minutes when the Cisco IOS software image and the interfaces are loaded. Step 10 Use the delete command to delete the PROM upgrade program from bootflash and the squeeze command to reclaim unused space. Before you proceed, observe the following rules for hostname:.
Uppercase and lowercase characters look the same to many internet software applications. It may seem appropriate to capitalize a name the same way you might do in English, but conventions dictate that computer names appear all lowercase.
Step 2 Use the dir bootflash: command to ensure that there is sufficient space in Flash memory to store the promupgrade image. If there is insufficient space, delete one or more images, and then enter the squeeze bootflash: command to reclaim the space. Step 3 Download the software image into Flash memory using the copy tftp command. The following example shows how to download the Cisco IOS software image catipbase-mz.
EWA from the remote host The following example shows how to clear the BOOT variable:. The following example shows how to add the catipbase-mz.
Step 6 Use the config-regi ster command to set the configuration regi ster to 0x The following example show how to set the second least significant bit in the configuration register:. Step 7 Enter the reload command to reset the switch and load the software.
The following example shows the output from a successful upgrade followed by a system reset:. Step 8 Use the show version command to verify that the new Cisco IOS release is operating on the switch. These sections list the limitations and restrictions for the current release of Cisco IOS software on the Catalyst series switch.
Workaround: Display the configuration with the show standby command, then remove the CLI. Use the standby delay reload option if the router is rebooting after reloading the image. Workaround: Verify whether or not the Neighbor discovery cache has an entry, separate from regular troubleshooting areas of IPv6 address configurations and other configurations. If this message appears, check that there is network connectivity between the switch and the ACS.
The CPU usage will drop once the hosts are learned. If multiple violations occur simultaneously on different interfaces, the CLI displays the last violation. For example, if IPSG is configured for 10 ports and violations exist on ports 3,6 and 9, the violation messages are printed only for port 9. This will happen if there is no room in the hw MTU table to store additional values.
This reduces the likelihood of fast UDLD incorrectly error disabling a link due to false positives. The outputs of certain commands, such as show ip route and show access-lists, contain non-deterministic text. While the output is easily understood, the output text does not contain strings that are consistently output. A general purpose specification file entry is unable to parse all possible output.
While a general purpose specification file entry may not be possible, a specification file entry might be created that returns the desired text by searching for text that is guaranteed to be in the output. If a string is guaranteed to be in the output, it can be used for parsing. The first line is easily parsed because access list is guaranteed to be in the output:. The remaining lines all contain the term host.
As a result, the specification file may report the desired values by specifying that string. For example, this line. This is useful when the desired lines contain nothing in common. For example, the rules in this access list do not contain a common string and the order three permits, then a deny, then another permit , prevent the spec file entry from using permit as a search string, as in the following example:.
The XML output of show running-config command includes the following, which can then be parsed programmatically, as desired:. Caveats describe unexpected behavior in Cisco IOS releases. Caveats listed as open in a prior release are carried forward to the next release as either open or resolved.
Workaround: Verify that the MAC addresses being transmitted through the system are learned. If either of these differs from the FQDN in the certificate, then the existing persistent self-signed certificate is replaced with a new one with the updated FQDN. Be aware that the existing keypair is used in the new certificate.
On a switch that support redundancy, the generation of the self-signed certificate is performed independently on the active and the standby supervisor engines. So, the certificates differ. This only impacts a switch that has any of the following queues are configured as SPAN source in releases prior to The SPAN destination would not get the same traffic after upgrading to Workaround: After upgrading to For example:.
Workaround: Issue the no shutdown command. Workaround: Remove the transceiver from the new port and place it in the old port. Once the SFP is recognized in the old port, remove it slowly and insert it in the new port. Workaround: When the port channel starts to flap, enter shut and no shut on the port channel.
After the first switchover and after deleting the portchannel, create a new channel. Shut any one REP port in the segment to cause a failure in that segment. Workaround: Enter the shutdown command, followed by the no shutdown command on the interface. This triggers relearning and synchronizing of the host's MAC to the standby supervisor engine. The queue transmit counters as well as the policing statistics if any are correct. This only happens when the switch is running network mobility service protocol nmsp.
It does not happen if the phone is CDP enabled. Specifically, the IP phone is detected on the voice VLAN, and the displayed information of serial number, model number, and software version is correct.
However, a PC sitting behind the phone is detected on a data VLAN, and the displayed device information is wrong and should be ignored. Workaround: When interface mode is changed from Layer2 to Layer3, manually change interface trust state by enter the cos trust dscp command. Despite the different default value, you can configure any value in the time range. Workarounds: The Cisco switch default link-flap detection value is 5 flaps in 10 seconds. Use the default value or larger numbers.
Workaround: Do shut, then no shut on the SVI. Similarly, the show epm sessions command always displays the authentication method as DOT1X. Workaround: To view the authentication method used for a client, enter the show authentication sessions command.
Workaround: Configure an ACL on the port. Workaround: Disable the ip cef accounting non-recursive command. This section lists the resolved caveats in Release Workaround: Upgrade to The next line in the output of the show ip ospf int command is the following:.
If you now advance the output by pressing either Enter or the space bar, the device reloads and the following error message displays:. Workaround: Before removing a linecard, delete the statically configured ip source binding entries on any of the interfaces on the line-card.
This problem occurs when an Workaround: Shut down then reopen the interface. Workaround: Specify a profile name when you enter the diagnostic command. You might want to avoid requesting on demand send for invalid modules. First, enter the show module command to check for valid or present modules.
Assuming that you configured authentication open on the port and a host is authenticated on that port, if you unconfigure open auth no authentication open , the STP state becomes blocked on an authenticated port. The connected host is authenticated so it should be able to send traffic and the STP state should be Forwarding.
Workaround: Configure the route map to only match on ACL s. The statistics are displayed properly on the active supervisor. Workaround: Attempt an authorization after a timeout. Workaround: Disable the debug management expression evaluator command. This occurs only if the following conditions are satisfied:. Workarounds: Use either of the following to set the sxp default password:.
This issue is seen when the default SXP password is encrypted with type-6 encryption. Workaround: Manually re-enter all entries with new time settings. The show memory debug leak lowmem command can work in extremely low memory conditions but might crash the switch due to its very high CPU intensity. It also takes between 20 and 90 minutes to complete. Workaround: If call or packet drops persist, contact TAC rather than entering these commands on your own.
Workaround: When creating the file, enter some characters, remove the ftp command, then re-enter it as follows:. The active supervisor engine also displays following log message for each linecard slot in the chassis:.
If the standby supervisor engine boots, the active supervisor engine displays the following message and reboots:. While active supervisor engine is up, no traffic can be handled by the switch.
The two supervisor engines might alternately reboot continuously. Workaround: None. The message is cosmetic. Workaround: Reconfigure ACLs on all interfaces. Cisco has released free software updates that address this vulnerability. Workarounds that mitigate this vulnerability are not available.
Workaround: Enter the no cdp run command to disable CDP. Workaround: Do not use AAA accounting with the broadcast keyword.
Products that are not running Cisco IOS software are not vulnerable. Cisco has released free software updates that address these vulnerabilities. The HTTP server may be disabled as a workaround for the vulnerability described in this advisory. Additional information on Cisco's security vulnerability policy can be found at the URL:. Sharing, shaping, and strict-priority configurations determine scheduling of egress traffic.
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The Cisco Catalyst GE also has a hot-swappable fan tray with four redundant fans for additional serviceability and availability. AC and DC power supplies can be mixed in the same unit for maximum deployment flexibility. Got it, continue to print. This website uses cookies to improve your experience while you navigate through the website.
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