Server Networking

Hi,We have 6509-E switches as L3 Gateway in our Data centers. We currently have couple of 5596 and N2K FEX all in L2. Now we are planning to add more N2Ks to replace some of our existing 3750-Es in DC.  Now to replace 6509-Es I am looking at few choi...

I am working on this design where the DC VLANs that need to be extended to DRC via OTV have their gateways as SVIs on a server agg VSS. So there is no FHRP in DC. The other side (DRC) server aggregation is a pair of VDCs on N7K. See figure for connec...

I understand that we need to use peer gateway on a vPC pair when HSRP is running, but why do we use peer switch if the vPC pair is not the root or seconday root of the network? Does it matter they send out different BIDs? What would be the worst case...

In preparing for a SAN install in the next couple of weeks, I applied the latest updates using the infrastructure and server firmware packages to my UCS chassis.  The infrastructure upgrade/update applied without incident.  Cant say the same for the ...

Hi all, I am not sure if this scenario will work or not, I want to enable OSPF over Peer-Link, my scenario is I have three locations : location#1 has two nexus 7k configure one VDC connected over peer-link.Location#2 has one core switch 6500 connecte...

Hi I need to support Microsoft NLB in muticast mode on a pair of Nexus 6Ks. I have looked at the example on CCO but that it is for a 7K and on the 6K the command:   layer-2 multicast lookup mac is not available. I saw a another post and a feature ...

Hello there,I was wondering if I may connect a fex or something else in the 40Gb ethernet ports on the Nexus 9000 platform.I'm not planning to run ACI on it, just use the 40Gb fabric.For instance: The Nexus 9396PX has 12x40Gb ports. Could I connect s...

Hello. One of the most significant differences between VSS and vPC is that in case of using VSS, virtual switch has single control plane. And in case of vPC there are always two separate control planes - one per vPC peer switch. So my question is: ar...

We are setting up a vss 1440 with 2 6509.  I have 2 supervisor blades per chassis.  I have 4 tengig ports on each switch in each port channel.  we followed the configuration guide from CISCO.  In a SH IP INT BR we only see one port on each switch in ...

i got a vm that works fine when its on vlan50 portgrop on the nexus 1000v but hen the vm migrates to another esxi host, it hass no network access. I checked the service profile and both hosts has the same profiles and vlans. I tried another vlan and ...

 Hello Forum Team!     I have a pair of Nexus 5548UP configured as a vPC domain active-standby couple with six Nexus 2248TP Fex's in a dual-homed scenario (each fex is connected to each 5548UP). At the same time, both 5548UP are dual-homed to a pair ...

Hi,I have a requirement to enable ECN marking on CIsco nexus 3064 switch. ECT(0) traffic is being switched. Tried the below configs, But not quite helping.==================================n# sh policy-map type network-qos nq_pm_1  Type network-qos p...

I am having some problems with VSM/VEM connectivity after an upgrade that I'm hoping someone can help with. I have a 2 ESXi host cluster that I am upgrading from vSphere 5.0 to 5.5u1, and upgrading a Nexus 1000V from SV2(2.1) to SV2(2.2).  I upgraded...

 Hi,I have a Cisco 6248UP Fabric Interconnect which I am suppose to keep a Primary in Cluster. So, I did the configuration according to it, Secondary is not yet attached. I am able to browse the this FI but not able to take access/login it.When I tri...

I'm trying to connect a HP c7000 blade enclosure with a Catalyst 3750 switch. The c7000 enclosure came with 2 HP Virtual Connect FlexFabric 10Gb/24-port Modules.This is what i have:Cisco side:-cisco catalyst 3750 10/100 with four 1Gig SFP ports-1 Cis...