Network Design Considerations
This chapter provides guidance on performing the
network configuration needed to deploy Packaged CCE on UCS C-Series servers. It includes information on fault tolerance and redundancy.
Requirements for Packaged CCE Server
The illustration below shows the recommended design for all
Packaged CCE deployments on UCS C-series servers and the network implementation
of the vSphere vSwitch design.
This design calls for using the
VMware NIC Teaming (without load balancing) of virtual machine network
interface controller (vmnic) interfaces in an Active/Standby configuration
through alternate and redundant hardware paths to the network.
The network side
implementation does not have to exactly match this illustration, but it must
allow for redundancy and must not allow for single points of failure affecting
both Visible and Private network communications.
also has the option, at their discretion, to configure VMware NIC Teaming on
the Management vSwitch on the same or separate switch infrastructure in the
- Ethernet interfaces must be
Gigabit speed and connected to Gigabit Ethernet switches. 10/100 Ethernet is
- No single point of failure
is allowed for visible and private networks.
- Network switch
infrastructure cannot use Cisco Stacking technology to combine all switches to
which the UCS C-series server is connected into a single virtual switch.
- Network switches must be
configured properly for connection to VMware. Refer to the
Base for details on ensuring proper switch configuration to prevent
Spanning Tree Protocol (STP) delay in failover/fallback scenarios.
Configuration and QoS
Access Switch Configuration
The following are examples of data center access switch up-link port configurations for connecting to UCS C-Series servers. You must use virtual switch tagging (VST) and ensure that you have properly configured the correct corresponding setting between the network switches and the vSphere vSwitches.
Use auto negotiation for Gigabit
connections on both the network switch and the ESXi host adapters.
It is essential that the network configuration be implemented
correctly. Improper configuration of up-link
ports can directly and negatively impact system performance, operation, and
Use this configuration on a switch port that connects to the active or standby NIC on a UCS C-series host on the public network.
vlan 10 in this example is for the Packaged CCE Public VLAN. You can use any VLAN of your choosing.
description Connects to PCCE UCS Host on the Public Network
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 10
switchport mode trunk
spanning-tree portfast trunk
vSwitch and Virtual NIC Configuration
This figure illustrates a configuration for the vSwitches and vmnic
adapters on a C-Series server using the redundant Active/Standby
vSwitch NIC Teaming design.
The configuration is the same for the Side A server and the Side B server.
Configure the ESXi
Host Network for the Virtual Machines
To configure the
network for VMs, you create a virtual switch connected to an Ethernet port on
the server, and then associate the virtual machine's network adapter to this
virtual switch. Perform the following procedure to create vSwitches for the
public and private networks on the Side A and B servers, referring to the
illustration above as an example.
||Add a vSwitch as
- Login to the
ESXi host using VMware Infrastructure Client.
- Select the
- Click the
Type >Virtual Machine. Then click
Create a vSphere standard switch and select an associated a VM nic. Be sure to
reference the figures in this section to ensure you are aware of which physical
VM NIC you're associating with the vSwitch.
- Under Port
Group Properties, enter Network Label: VM X, where X describes the network. For
example, the UCCE Public or UCCE Private network as illustrated in the figure
||Associate a VM
Network Adapter to Network Connection as follows:
- Select the
- Select a
virtual switch from the Network Connection/network label (must be "UCCE
Public" or "UCCE Private").
switchports are using VLANs, enter the VLAN id in the VLAN ID field.
Configuring the speed and
duplex of a network link is essential for reliable network operation.
allows for fixed 1000/Full to be set on the Host and the Switch, use Auto/Auto
on both ends. Manually configuring 1000/Full on the Host requires Host
configuration steps that are not detailed here and are not exposed in VMware.