Server Networking

Hi All I have come across an unusual situation. I have a number of servers connected to Cisco Nexus 2348UPQ 10GE Fabric Extenders which are up linked to a pair of Nexus 7710. Ports are fine, servers are fine and then out of the blue one of the ports...

 have two Cisco Nexus switches with EIGRP Routers. Switch 1: SWITCH1(config-if)# sh run !Command: show running-config !Time: Sun Feb 21 05:29:57 2016 version 5.0(3)U5(1f) no feature telnet no telnet server enable feature eigrp feature interface-vla...

Hello, I have very strange behavior on OTV. Hardware is Nexus 7700 F3 and NX-OS 6.2(12).OTV is configured across two data centers, and operation in unicast transport mode. Each site has two OTV devices, and Vlans are distributed among them. Each OTV ...

Hi Guys, We have farily stock standard config across our 5Ks as follows however while the port-channel / vPC is UP the server side complains with the following error continiously: dc-224-dh3-rke17-sas1 interface port-channel644 switchport mode trunk...

Can we connect the FEX to a QSFP port (40G) with 4x10G terminated on the FEX ? It doesnt seem to work. 56128  40G -----QSFP+------> 4x 10G ---> FEX ? Please help me confirm this. 

Hi All, I'm working on a task to add the new modules in Nexus 7K. As far I know initially all physical interfaces belong to the default VDC (VDC 1). we no need to allocate the physical interfaces to default VDC for enabling the interfaces to make con...

Hello all, I am having issues configuring the Nexus 1000v in a different way for lab use..  I am building a POC to see if possible to use several 10G nics in one ESXi host as a core switch for 4 other physical ESXi hosts. This means that I am tryin...

I've read that the default behavior of an interface on a FEX is to be in routed mode. On these interfaces, do they function just like an L3 interface would directly on a 7K line card? Can you assign an IP address to the interface or must you use an S...

VPC modified the native behaviour both on layer 2 and layer 3 aspects. The configurations guide and best practice guide are beyond hundred of pages. There are so many network incidents are posted for incorrectly implemented VPC configurations. If a ...

To prevent Ip spoofing, SAV can ensure the upstream packets are verified which will allow secure host communicate in CMTSI want to know what will CMTS deal with downstream, when SAV is working.Is it consistent with how it deal with upstream for examp...

I'm still confused. before short time a VMware coach told me that a esxi host should'nt be connected to a fabric extender. reason: a fabric extender my not be connected to a switch. (the vmware dvs) but since I try to design this datacenter   I do no...