What is best practice when it comes to upgrading Cisco IOS? I have a production router that needs to be upgraded from version 3 to 16 but since it is my first time, I am worried that I may end up breaking it. Is it generally safe to do the upgrade?
Hello recently I had to engage my old 3560 switches in my network awaiting for new switches to be received for the new building.suddenly I started to receive many complains on about all my 3560 switches 7 switches WS-C3560-24PS connected clients.when...
Hellois there anyone who can explain me:1) SNMP trap and informs (the difference/similarity between them etc)? 2) And how to configure SNMPv3 on nexus switch? Or please explain me SNMP in general or can you give me a link to a good explained guide? 3...
Seems as if no matter what I do, configs to all my nodes in a topology are not save. I always choose "extract configs" and "close terminal windows" and choose "overwrite" existing file or even not choose to overwrite, but upon launching simulation of...
I am having a bit of a contemplation. Most things I read say to put a root bridge (per VLAN) as the Core Switch. I know most, if not all, the configurations about spanning-tree and root bridges and the election process. My question is would it be bet...
I'm setting up a lab, pfSense router -> c3750 as core -> access switch 3750 as switch1.I've set the vlan 101 on the core switch, enabled DHCP on the vlan 101. DHCP is working well.I've setup the route on the core switch, I can reach the router and th...
Hello, I need to first preface that I have a brain injury, so if I forgot to post any details here, I will be happy too do so. I a, setting up a "new"-to me Cisco 3560X with the upgraded E image: show ver:Cisco IOS Software, C3560E Software (C3560E...
Hi,
I posted a similar question to this once before, and wasn't able to find a resolution, so I was hoping to give it another go as I still have the problem.
I have a newly deployed 4331. The Wan interface is set to auto negotiate, and I need to...
I'm trying to connect a Nexus 3172TQ QSFP+ to a Catalyst 4948 X2 CX4 port. I've split out the QSFP+ interface on the nexus into 4 10G interfaces and connected the two via a Dell EMC Isilon InfiniBand DDR QSFP to CX4 1 Meter /3.3 FT Cable 851-0153-01...
I restored my RV 345 router from a previous backup & now the security license token will not activate.I rebooted the router & tried entering the token again but same error.I'm getting a 'Communication Timeout' error message, The product instance was ...
Hi,I configured a very basic ACE rule to debug switching issues I have on my network.The switch is running on a single VLAN1, without extra modifications or services activatedInterface: VLAN1, IP Address type: DHCP, IP address: 10.0.0.11, Mask 255.25...
I made my 9 switch stack the VTP server yesterday. Today I get VTP message that says:Feb 1 10:35:49: %SW_VLAN-4-VTP_USER_NOTIFICATION: VTP protocol user notification: MD5 digest checksum mismatch on receipt of equal revision summary on trunk: St9 (...
I am a little confused as to why I am seeing this. I have a 2960x that is showing an ARP entry with an address that is 2 hops away in my network infrastructure, which is not connected to the local subnet. For example:my local switch is 192.168.100.0/...
