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Resolved! [SOLVED] Cisco 4506 w/WS-X4748-SFP-E with Crestron NVX Series 4k Video Encoder/Decoder, Links don't stay up.

I have a working C4506 with 2 UPOE Line cards and just added the X4748-SFP-E line card.The system shows the line card -- and I go configure it -- but the ports don't stay up.Normally, they are all populated with 48 GLC-MM-SX modules. sh interface for...

Resolved! Interface up/down notifications WS-C4510R-E

I have many WS-C4510R-E. On all other switches, I can enter the 'terminal monitor' command and get the status when an interface goes up or down. On the WS-C4510R-E, term mon doesn't give me this output.  What is the command to enable interface up/dow...

Resolved! 6506 Upgrade VSS fro 15.1 to 15.2

Hello, I would like to have some confirmation concerning the upgrade of a VSS with 2 6506 (with one SUP card). I would like to upgrade from version 15.1(1)SY to 15.2.1-SY5. Question 1: I see that they are 2 different method (from more disruptive to l...

Xavillon by • Level 1
  • 1833 Views
  • 2 replies
  • 0 Helpful votes

3850 Boot Failure

Good Afternoon, I have a 3850 that recently failed to boot after a building power cut. I tried to load the IOS from ROMMON but it continued to fail. I resolved the issue by booting an image from TFTP, then once the switch was back up I loaded a new i...

Resolved! Unable to download certificate

Hi, getting below error on router %RF_ISSU-3-INVALID_SESSION: RF ISSU client on domain (0) does not have a valid registered session %PKI-6-CERTRENEWAUTO: Renewing the router certificate for trustpoint Web-VPN-CA System image file is "bootflash:is...

Resolved! UDLD and RSTP

Hi,I would like to understand if UDLD is useful in a situation where RSTP is implemented.I read somewhere that UDLD timers are too slow in the case of RSTP, and that Loopguard need to be configured as expedient.Elsewhere I read a different opinion, i...

Mary88 by • Level 1
  • 2185 Views
  • 3 replies
  • 0 Helpful votes

Resolved! Timestamp problem

Hi, I have a strange problem with one of my 2960x switch. The timestamp display a "." at the beggining of the line, for example : .Aug 28 16:00:30.951 CEST: %SEC_LOGIN-5-LOGIN_SUCCESS: And a correct one : Aug 28 15:51:18.428 CEST: %SEC_LOGIN-5-LOGIN_...

Resolved! Cisco 1900 - Catalyst 3560

Hi, We are trying to convert a cisco 1900 configuration onto a Catalyst 3560 but having issues with the multiple interfaces and routing. We have a router at each side of the P2P link with the following configuration. (IP Addresses different at opposi...

Jopenm123 by • Level 1
  • 956 Views
  • 8 replies
  • 0 Helpful votes

odd spanning tree issue

I'm having an odd issue where i have 2 switches connected together one link via comcast ethernet service and the other via a wireless link. I have the switches set to per vlan RSTP. Switch 1 is the root and switch 2 is the downstream switch. On switc...

Resolved! 2960 - Performance overhead due to SPAN

HiLooking to SPAN all traffic on a 2960 switch to a single port to dump it into NTOP.  Are there likely to be any performance issues on a 2960 due to SPANning? I found quite a nice article on the 6500 series that saysOn the Catalyst 5500/5000 and 650...

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