Server Networking

Hello   Right now we are getting issues with unattended installation of a Cisco C240, the Cisco server don’t send the option 93 to the DHCP server(Where indicate to the Main server the type of hardware – Client System) and for this reason never recei...

Hi! Now facing an issue when a vPC-attached ESXi (not e-vPC, not vPC+) with MS NLB cluster members is not reachable by the clients connected from other vPC-attached ESXi. Interestingly, a vPC-attached client can reache the MS NLB cluster, located on ...

Hi Folks, I am trying to add host in N1KV/Vmware DVS and showing following error, Can anyone help me with this issue: System.NullReferenceException: Object reference not set to an instance of an object. at VpxClient.DVS.DVSWizard.Data.HostItemInfo.In...

Hello, This is my first time posting here, but I do use the Support Community often when I'm looking for answers.  I have searched for the possible answer to my problem for well over two weeks and have tried various solutions discussed in other posts...

We have a laptop connected to a 2248 FEX. I know it is not standard but at least there should be some activity on the port, however it is still down. The port is in spanning-tree port type edge auto/auto and obviously the FEX is online. The laptop su...

Hi, I have some non-Cisco physical servers. Wonder if they support the FEX-adapter technology, I'd like to understand if it's possible to have some redundancy or even channeling. I mean there is just a link between the FEX and the server, and it can ...

Hi, I am receiving these errors very often on N7K switches. What are these related to? Is there any guide to check the details of these errors? %ARP-4-SYSLOG_SL_MSG_WARNING: IP-5-INVALID_NOTIFY: message repeated 8 times in last 10 sec%ARP-5-INVALID_N...

Hello All, I'm working on a design issue and would like know the Cisco best practice to configure the spanning tree port type for the L2 connectivity between VDCs? In a scenario VDC running on Switch A to VDC running on Switch B and both switch A and...

Hi, I'm looking for info about adapter-FEX. I have several HP and DELL servers and I would like to know if it's possible to use adapter-FEX on them ? Or it's just on Cisco servers ? Thanks,

Why is this command not working? Enforce on each user says no N5k1(config)# snmp-server globalEnforcePriv NASSWN5k1(config)# show snmp user______________________________________________________________ SNMP USERS [global privacy flag enabled]________...

Hi guys, We experiment a total blackout last night in our data center composed of four nexus 7000 in two vPC Domain. We do EIGRP routing on this devices and inter-vlan routing with HSRP. There is some FEXs directly attached to the nexus. One of our c...

I have a Cisco SPA122 router and I need to know what the username and the password is. When I want to like or comment something on Instagram a sign shows up and it says: "Link not allowed. It looks like your profile contains a link (46.227.72.139) th...