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Cloud Network Solution Design

Latest reply: Apr 30, 2022 07:00:06 364 8 2 0 0


Dear All,

Today we are going to learn about Cloud Network Solution Design

 

Logical Networking in the Virtualization Scenario

 

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The entire network is divided into three layers:

Virtual layer: Like the physical switch, the distributed virtual switch (DVS) builds the network between VMs and provides the capability for interworking with external networks.

Access layer: It is divided into the storage network, service network, and management network. Different VLANs are defined to logically isolate the management, service, and storage planes. To simplify the network and improve reliability of the network, it is recommended that access switches adopt the stacking mode. 

Convergence layer: The access switch is connected to the switch at the convergence layer through the uplink that uses the ETH-TRUNK technology. After stacking of the aggregation switch, it is unnecessary to enable the VRRP function. If the aggregation switch is required to provide the gateway function, the VLAN IF interface is directly used as the user gateway address. It is recommended that the cluster mode be used. .

Core layer: The aggregation switch is connected to the switch at the core layer in the uplink direction. The core switch uses the OSPF or static route to interwork with upper-layer devices. It is recommended that the cluster mode be used.


Logical Networking in the Cloud DC or NFVI Scenario


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The entire network is divided into three layers:

Access layer: It is divided into the CNA storage network, CNA service network, CNA management network, and OpenStack management network. The OpenStack management network is responsible for communication between OpenStack components and between OpenStack and external entities. Different VLANs are defined to logically isolate different planes. To simplify the network and improve reliability of the network, it is recommended that access switches adopt the stacking mode.

Convergence layer: The access switch is connected to the switch at the convergence layer in the uplink direction. The uplink traffic of the access switch is routed to the aggregation switch through the ETH-TRUNK. After stacking of the aggregation switch, it is unnecessary to enable the VRRP function. If the aggregation switch is required to provide the gateway function, the VLAN IF interface is directly used as the user gateway address. It is recommended that the cluster mode be used.

Core layer: The aggregation switch is connected to the switch at the core layer in the uplink direction. The core switch uses the OSPF or static route to interwork with upper-layer devices. It is recommended that the cluster mode be used.


Typical SAN Storage Networking

 

Network with SAN IP SAN and FC SAN


 

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 Server port level connectivity with Storage Plan

 

 

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Sever HBA SAN Switch and Controller level Connectivity

 

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IP SAN Server Network Switch and Controller level Connectivity

  

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 Network requirements

In IPSAN storage networking mode, four VLAN addresses and eight IP address must be configured to ensure stability of eight paths.

 

In FC-SAN storage networking mode, it is recommended that small zones be defined to ensure interworking between the storage and hosts.

 

When the storage virtualization VIMS uses the FC SAN or IP SAN, the amount of network data controlled by the VIMS storage is small, but high reliability is required. Therefore, two GE ports must be used exclusively by the VIMS storage to control the network. The VIMS supports advanced features, such as thin allocation, snapshot, and storage hot migration.

 

10G Connectivity design with different number of ports

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 10G Connectivity design with 4 Ports

 

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 10G Connectivity design with 6 Ports

 

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Network requirements

In 10GE networking mode, the hardware must have a space of at least 2*10 GB, where at least 2*6 GB is used for the storage plane.

 

The storage plane supports the IB network, but does not support hybrid networking.

 

In the 40 GB/56 GB IB networking mode, bandwidth sharing can meet requirements.

 

Network adapter and network type: GE (TCP/IP protocol), 10GE (TCP/IP protocol), 40 GB IB (RMDA protocol), 56 GB IB (RMDA protocol)

 

It is recommended that the storage plane use independent network adapters, and do not share network adapters with other planes; otherwise, networks on different planes may interfere with each other.

  

Virtual Network Service Deployment

 

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The figure shows the logical framework of the VDC, VPC, VSA, V-router, V-GW, V-FW, and DHCP servers. A pair of VSAM VMs logically manage multiple VSA VMs.

Regards,

Kashif Ali


The post is synchronized to: HCIE group

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MahMush
Moderator Author Created Apr 29, 2022 15:23:21

Very informative post
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MahMush
Moderator Author Created Apr 29, 2022 15:23:39

Thank you for sharing valuable content
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Irshadhussain
Created Apr 29, 2022 16:49:43

Good Share
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Irshadhussain
Created Apr 29, 2022 16:49:50

Cloud Network Solution Design-4885627-1
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harisaliehsan
Created Apr 29, 2022 16:50:27

Thanks for sharing
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harisaliehsan
Created Apr 29, 2022 16:50:34

Cloud Network Solution Design-4885647-1
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user_4000619
Moderator Created Apr 30, 2022 04:14:25

good
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bobi
Created Apr 30, 2022 07:00:06

Good share
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