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Wi-Fi Mini-Physical Interface Module Overview


Wi-Fi Mini-Physical Interface Module (Wi-Fi Mini-PIM) for SRX320, SRX340, SRX345, and SRX550M provides an integrated wireless access point —or wireless LAN— along with routing, switching, and security in a single device. Mini-PIM supports the 802.11ac Wave 2 wireless standards and is backward compatible with 802.11a/b/g/n. The Wi-Fi Mini-PIM can coexist with other Mini-PIMs supported on the SRX Series device.Table 1 provides a summary of the features supported on Mini-PIM.

Typical deployments for Wi-Fi Mini-PIM solution include:

  • Secure wireless LAN connectivity to endpoint devices of corporate users at remote branch offices as seen in Figure 1. 802.11ac, WPA2, 802.1X, and SSID-to-VLAN mapping features provide secure Wireless LAN connectivity.

  • Direct network connectivity to the enterprise Internet of Things (IoT) devices. The security features on the SRX Series devices secure the IoT devices.

The Mini-PIM inserted onto the SRX series device provides a secure wireless access point connection to multiple clients in a remote location. The following figure illustrates the secure LAN connectivity of Wi-Fi Mini-PIM.

Figure 1: Secure Wireless LAN connection with Wi-Fi Mini-PIM
Secure Wireless LAN connection with Wi-Fi Mini-PIM

See How to Install the Wi-Fi Mini-PIM for SRX Series Services Gateways   for more information about how to install the Wi-Fi Mini-PIM.

Features Supported on the Wi-Fi Mini-PIM

Table 1 lists the key features supported on the Wi-Fi Mini-PIM.

Table 1: Wi-Fi Mini-PIM Features




Enables transmission of data to multiple clients simultaneously.

Dual radios

Both radios of 2.4 GHz and 5 GHz bands are simultaneously supported. The maximum supported speed is upto 1.2 Gbps.

Virtual access points (VAPs) and VLAN features

  • Allows you to segment the WLAN into multiple broadcast domains that are the wireless equivalents of Ethernet VLANs. A single access point is segregated into multiple individual VAPs, simulating multiple access points in a single system.

  • An access point supports multiple VLANs, which can be distributed across VAPs and radios.

  • You can configure up to eight VAPs per radio. You can map up to 16 extended service set identifiers (ESSIDs) to individual VLANs.

  • The VLANs from the Mini-PIM software map to VLANs on Junos OS.

Co-existence of interfaces

The Wi-Fi Mini-PIM coexists with 4G LTE, VDSL, T1, and serial interfaces.

Client authentication methods

Client authentication methods supported are Wi-Fi Protected Access (WPA) Enterprise (WPA2 standards) and Wi-Fi Protected Access (WPA) Personal (AES-CCMP cipher suits and WPA2 standards).

Benefits of Using the Wi-Fi Mini-PIM

  • Provides advanced security capabilities (WPA personal and WPA enterprise authentication methods).

  • Simplifies network design, and provides unified management.

  • Supports end-to-end segmentation from user to applications with ESSID-to-VLAN mapping.