Requirements for vSRX on Microsoft Hyper-V

 

This section presents an overview of requirements for deploying a vSRX instance on Microsoft Hyper-V.

Software Requirements

Table 1 lists the software requirements for the vSRX instance on Microsoft Hyper-V.

Note

Only the vSRX small flavor is supported on Microsoft Hyper-V.

Table 1: Specifications for vSRX for Microsoft Hyper-V

Component

Specification

Hypervisor support

  • Starting in Junos OS Release 15.1X49-D80 and Junos OS Release 17.3R1, you can deploy the vSRX only on Microsoft Hyper-V Server 2012 R2 or 2012.

  • Starting in Junos OS Release 15.1X49-D100 and Junos OS Release 17.4R1, you can deploy the vSRX on Microsoft Hyper-V Server 2016.

Memory

4 GB

Disk space

16 GB (IDE or SCSI drives)

vCPUs

2

Virtual network adapters

8 Hyper-V specific network adapters

Hardware Requirements

Table 2 lists the hardware specifications for the host machine that runs the vSRX VM.

Table 2: Hardware Specifications for the Host Machine

Component

Specification

Host memory size

Minimum 4 GB

Host processor type

x86 or x64-based multicore processor

Note: DPDK requires Intel Virtualization VT-x/VT-d support in the CPU. See About Intel Virtualization Technology.

Gigabit (10/100/1000baseT) Ethernet adapter

Emulates the multiport DEC 21140 10/100TX 100 MB Ethernet network adapter with one to four network connections.

Best Practices for Improving vSRX Performance

Review the following practices to improve vSRX performance.

NUMA Nodes

The x86 server architecture consists of multiple sockets and multiple cores within a socket. Each socket also has memory that is used to store packets during I/O transfers from the NIC to the host. To efficiently read packets from memory, guest applications and associated peripherals (such as the NIC) should reside within a single socket. A penalty is associated with spanning CPU sockets for memory accesses, which might result in nondeterministic performance. For vSRX, we recommend that all vCPUs for the vSRX VM are in the same physical non-uniform memory access (NUMA) node for optimal performance.

Caution

The Packet Forwarding Engine (PFE) on the vSRX will become unresponsive if the NUMA nodes topology is configured in the hypervisor to spread the instance’s vCPUs across multiple host NUMA nodes. vSRX requires that you ensure that all vCPUs reside on the same NUMA node.

We recommend that you bind the vSRX instance with a specific NUMA node by setting NUMA node affinity. NUMA node affinity constrains the vSRX VM resource scheduling to only the specified NUMA node.

Interface Mapping for vSRX on Microsoft Hyper-V

Each network adapter defined for a vSRX is mapped to a specific interface, depending on whether the vSRX instance is a standalone VM or one of a cluster pair for high availability.

Note

Starting in Junos OS Release 15.1X49-D100 for vSRX, support for chassis clustering to provide network node redundancy is only available on Microsoft Hyper-V Server 2016.

Note the following:

  • In standalone mode:

    • fxp0 is the out-of-band management interface.

    • ge-0/0/0 is the first traffic (revenue) interface.

  • In cluster mode:

    • fxp0 is the out-of-band management interface.

    • em0 is the cluster control link for both nodes.

    • Any of the traffic interfaces can be specified as the fabric links, such as ge-0/0/0 for fab0 on node 0 and ge-7/0/0 for fab1 on node 1.

Table 3 shows the interface names and mappings for a standalone vSRX VM.

Table 3: Interface Names for a Standalone vSRX VM

Network

Adapter

Interface Name in Junos OS

1

fxp0

2

ge-0/0/0

3

ge-0/0/1

4

ge-0/0/2

5

ge-0/0/3

6

ge-0/0/4

7

ge-0/0/5

8

ge-0/0/6

Table 4 shows the interface names and mappings for a pair of vSRX VMs in a cluster (node 0 and node 1).

Table 4: Interface Names for a vSRX Cluster Pair

Network

Adapter

Interface Name in Junos OS

1

fxp0 (node 0 and 1)

2

em0 (node 0 and 1)

3

ge-0/0/0 (node 0)

ge-7/0/0 (node 1)

4

ge-0/0/1 (node 0)

ge-7/0/1 (node 1)

5

ge-0/0/2 (node 0)

ge-7/0/2 (node 1)

6

ge-0/0/3 (node 0)

ge-7/0/3 (node 1)

7

ge-0/0/4 (node 0)

ge-7/0/4 (node 1)

8

ge-0/0/5 (node 0)

ge-7/0/5 (node 1)

vSRX Default Settings on Microsoft Hyper-V

vSRX requires the following basic configuration settings:

  • Interfaces must be assigned IP addresses.

  • Interfaces must be bound to zones.

  • Policies must be configured between zones to permit or deny traffic.

Table 5 lists the factory-default settings for security policies on the vSRX.

Table 5: Factory Default Settings for Security Policies

Source Zone

Destination Zone

Policy Action

trust

untrust

permit

trust

trust

permit

untrust

trust

deny

Release History Table
Release
Description
Starting in Junos OS Release 15.1X49-D80 and Junos OS Release 17.3R1, you can deploy the vSRX only on Microsoft Hyper-V Server 2012 R2 or 2012.
Starting in Junos OS Release 15.1X49-D100 and Junos OS Release 17.4R1, you can deploy the vSRX on Microsoft Hyper-V Server 2016.
Starting in Junos OS Release 15.1X49-D100 for vSRX, support for chassis clustering to provide network node redundancy is only available on Microsoft Hyper-V Server 2016.