About VLAN and VxLAN configurations

HPE Telco Blueprints provide the following network configurations:
VLAN (Virtual Local Area Network)

The switch configuration using VLAN can be automated or manual.

VxLAN (Virtual Extensible Local Area Network)

The switch configuration using VxLAN is automated or manual.

The following table provides information on the configuration modes for each of the switch:
Table 1: Switch configuration modes
Switch Type of switch VLAN or VxLAN Configuration Mode

HPE FlexFabric 5900

Management VLAN Manual

ONIE Switch (Cumulus NOS) HPE 6900

Management VLAN Manual

HPE FlexFabric 5950

Data VLAN Automated

HPE FlexFabric 5950

Data VxLAN Manual

ONIE Switch (Cumulus NOS) HPE 6960

Data VLAN Automated

ONIE Switch (Cumulus NOS HPE StoreFabric SN2100M

Data VxLAN Automated

HPE Mellanox SH2200

Data VLAN Manual

HPE F8 40Gbe Virtual Connect Switch Module

Management and Storage VLAN Manual
NOTE:
Following are the network types that are configured for VLAN-based or VxLAN-based networks:
Table 2: HPE Telco Blueprint network types
VLAN Name RHOSP Network Description
iLO-OOBM Management iLO network
BLS Storage network Block Storage network for Internet Small Computer System Interface (iSCSI).

BLS is a tagged network.

CLM Internal API Cloud Management network for internal/administrator endpoint and interservice communication.

CLM is a tagged network.

OAM Operation and Management Network Operation and Management network provides connectivity to NTP, DNS, LDAP types of infrastructure services.

OAM is a tagged network.

CAN Customer Access Network Consumer Access Network or public endpoint for APIs.

CAN is a tagged network.

VIM-PXE (untagged) Provision network (VIM) PXE network for RHOSP Overcloud and Undercloud.

VIM-PXE is an untagged network.

Provider VLAN Provider VLAN Range of VLANs allotted for VM networks.

Provider VLAN is a tagged network.

VLAN configurations

VLAN (Virtual Local Area Network) is a subnetwork that can group together collection of devices on separate physical local area networks. VLANs are used to repartition LAN networks for better traffic management. VLANs help grouping together devices that communicate most frequently. VLANs provide better security as well as flexibility.

Following are the VLAN IDs used in the sample configuration:
Table 3: Sample VLAN IDs
Description VLAN ID
iLO-OOBM 30
VIM-PXE 160
CLM 161
BLS 162
OAM 163
CAN 164
Provider VLAN 801-900

VxLAN configurations

The HPE Telco Blueprints provide a scalable solution to deploy and manage network functions and services using VTEP-capable switches over Virtual Extensible Local Area Network (VxLAN).

VxLAN is a network encapsulation mechanism that enables Virtual Machines (VMs) to be deployed on any physical hypervisor to allow multi-tenancy within the Data Center (DC). Encapsulating VM traffic in VxLAN tunnels solves the VM mobility issue which requires the same layer 2 segment and overcomes network infrastructure MAC address and VLAN scalability limitations.

An HPE VTEP (Virtual Tunnel Endpoint) uses the following tunnels to provide VxLAN services.

  • VSI — A VSI (Virtual Switching Instance) is a virtual layer 2 switched domain. Each VSI provides switching services only for one VxLAN. VSIs learn MAC addresses and forward frames independently of one another. VMs in different sites have layer 2 connectivity if they are in the same VxLAN.

  • VxLAN — It is a logical point-to-point tunnel between VTEPs over the transport network. Each VxLAN tunnel can trunk multiple VxLANs.

Prerequisites to configure VxLANs for HPE FlexFabric 5950 switch

Before configuring a centralized or distributed VxLAN IP gateway, ensure that:
  • A service loopback group of the VSI gateway type is configured on VTEP.

    1. Run the service-loopback group type vsi-gateway command in system view to create a service loopback group of the VSI gateway type.

    2. Run the port service-loopback group command to assign any Layer 2 Ethernet interface to the service loopback group.

  • VSIs and VxLANs are created.

  • VxLAN tunnels are configured and assigned to VxLANs.

Reserving VLAN interface resources

The system provides 4094 Layer 3 interface hardware resources for Layer 3 interfaces. By default, these Layer 3 interface hardware resources are reserved for 4094 VLAN interfaces.

The reserved VLAN range starts from 4081 to 4094 for each VSI interface before the interface is created

NOTE:

Reserve VLAN is only applicable for HPE FlexFabric 5950 switch.

Following are the VxLAN IDs used in the sample configuration:
Table 4: Sample VxLAN IDs
Description VSI VxLAN ID
iLO-OOBM   10030
VIM-PXE 100160  
CLM 100161  
BLS 100162  
OAM   100163
CAN   100164
Provider VLAN   100801-100900