Hi, Thanks, there is a bug that causes silent reloads on 2960X POE units and on the last reload reason you will see "power-on". Based on the show version you may be hitting that issue. The bug is internal thus you wont be able to see the details, ID  CSCus47446. I suggest that if you have a service contract, go ahead and open a TAC case to get assistance with that and a confirmation of the bug. HTH, Jose ... View more

Hi, Can you post a show version ? Regards, Jose ... View more

Hi, Check this out: You can initiate a z-switchover by entering the redundancy force switchover command on the in-chassis active supervisor engine. http://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst6500/ios/12-2SX/configuration/guide/book/vss.html#wp1204229 HTH, Leo ... View more

Hi, This is expected, please check this out: Caution: When a module is inserted or removed, the switching bus can sometimes stall for about 3 seconds. This can disrupt the adjacencies in protocols such as Open Shortest Path First (OSPF), Border Gateway Protocol (BGP), or Multiprotocol Label Switching (MPLS) Label Distribution Protocol (LDP) if their timers have been configured for fast convergence. Note: Do not remove or install more than one module at a time. The switch can bring only an identical replacement module online. If the replacement module is different from the removed module, you must configure it before the switch can bring it online. http://www.cisco.com/c/en/us/support/docs/switches/catalyst-6500-series-switches/97065-oir-mod-catsw.html HTH, Leo ... View more

Hi, This is normally an issue with either a bad stack cable or a bad stack port, check the link below on how to address this: Resolving StackWise Connection Problems http://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst3750/software/troubleshooting/switch_stacks.html#wp39183 HTH, Jose ... View more

Hi, The error Warning: Rommon NVRAM area is corrupted. Initialize the area to default values is normally an indication of a hardware problem, you may try reformatting but most likely this is a HW issue. Also the sup module is EOL/EOS since 2012, so you may consider moving to a supported platform. HTH. Jose ... View more

Hi, According the matrix below is not supported: http://www.cisco.com/c/en/us/td/docs/interfaces_modules/transceiver_modules/compatibility/matrix/40GE_Tx_Matrix.html#_Toc455034907 HTH. ... View more

Hi, Check this out, maybe it can clarify some of your questions: http://www.cisco.com/c/en/us/td/docs/ios-xml/ios/interface/command/ir-xe-3se-3850-cr-book/define_interface_range_through_interface_range.html?bookSearch=true#wp2433959017 HTH. ... View more

Hi, There should not be a major difference if the configuration is the same, I would suggest you to run the following debugs while connecting the clock device into the 4500 and then into the 2960 or 3560 and the compare the DHCP process to see if we can spot anything abnormal on the 4500: debug ip dhcp server packets debug ip dhcp server events Hope this helps. ... View more

Hi, This is an expected behavior on the 2k and 3k switches where the Hulc led process will be running between 15-30% even on a unit with no load on it. Regards, ... View more

Hi, This normally means that there are OSPF packets with bad headers, you can run the command show ip ospf traffic gigx/x or interface that faces the neighbor and check under the OSPF header errors to see which one is increasing. Then you may want to run a debug ip ospf adj to see if you can capture more details about the packets received. Hope this helps, Jose ... View more

Hi, The device must be running 03.16.02.S / 15.5(3)S2 or above if you would like to make use of the Netflow FNFv9 Top Talkers commands. Regards, Jose ... View more