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Dual CT1/E1 GPIM (SRX-GP-DUAL-T1-E1)

Dual CT1/E1 GPIM Overview

A Gigabit-Backplane Physical Interface Module (GPIM) is a network interface card (NIC) that installs in the front slots of the SRX550 or SRX650 Services Gateway to provide physical connections to a LAN or a WAN. The GPIM receives incoming packets from a network and transmits outgoing packets to a network.

Note:

The Dual CT1/E1 GPIM does not yet support channelization.

The Dual CT1/E1 GPIM provides the physical connection to T1 or E1 network media types and performs T1 or E1 framing and line-speed signaling.

Note:

Only the SRX650 Services Gateway supports hot-swappable functionality for GPIMs. The SRX550 Services Gateway does not support hot-swappable functionality for GPIMs.

The Dual CT1/E1 GPIM can be plugged into any GPIM slot on the services gateway. Figure 1 shows the Dual CT1/E1 GPIM.

Figure 1: Dual CT1/E1 GPIM Dual CT1/E1 GPIM

Dual CT1/E1 GPIM Components

The Dual CT1/E1 Gigabit-Backplane Physical Interface Module (GPIM) contains the components listed in Table 1.

Table 1: Dual CT1/E1 GPIM Components

Component

Location

Description

GPIM ONLINE/OFFLINE button

Only the SRX650 Services Gateway supports hot-swappable functionality for GPIMs. The SRX550 Services Gateway does not support hot-swappable functionality for GPIMs.

Right side of the GPIM

Use the GPIM ONLINE/OFFLINE button to gracefully shut down the GPIM.

Two fixed T1/E1 ports labeled 0 and 1

Each port can be configured using the CLI in T1 or E1 mode.

Middle of the GPIM

T1 Mode:

  • Transmit bit rate: 1.544 Mbps

  • Receive bit rate: 1.544 Mbps

E1 Mode:

  • Transmit bit rate: 2.048 Mbps

  • Receive bit rate: 2.048 Mbps

Captive screws

One on each side of the GPIM

Use the captive screws to hold the GPIM in place in the services gateway.

Dual CT1/E1 GPIM Key Features

The Dual CT1/E1 Gigabit-Backplane Physical Interface Module (GPIM) provides the following common key features for both T1 and E1 modes:

  • Channel service unit/data service unit (CSU/DSU) to eliminate the need for a separate external device

  • 56-Kbps and 64-Kbps operating modes

  • Independent internal and external clocking option

  • Alarm reporting with a 24-hour history maintained

  • Loopback (local and remote) and BERT/PRBS diagnostics

  • Multilink Frame Relay and Multilink PPP support

  • MTU size of 9000 bytes (maximum)

Dual CT1/E1 GPIM Hardware Specifications

The Dual CT1/E1 Gigabit-Backplane Physical Interface Module (GPIM) has the hardware specifications listed in Table 2.

Table 2: Dual CT1/E1 GPIM Hardware Specifications

Description

Value

Dimensions (H x W x L)

0.78 in. H x 6.72 in. W x 8.1 in. L

(19.8 mm x 170.8 mm x 205.7 mm)

Weight

15.4 oz (0.44 kg)

Connector type

RJ-45

Form factor

Single-high, single-wide GPIM

Environmental operating temperature

32°F through 104°F (0°C through 40°C)

Storage temperature

-40°F through 158°F (-40°C through 70°C)

Relative humidity

5% to 90% noncondensing

Dual CT1/E1 GPIM Network Interface Specifications

The Dual CT1/E1 Gigabit-Backplane Physical Interface Module (GPIM) provides the network interface specifications specific to T1 or E1 modes, listed in Table 3.

Table 3: Dual CT1/E1 GPIM Network Interface Specifications

Description

T1 Mode

E1 Mode

Network Interface Specifications

Line encoding

AMI/B8ZS

HDB3

Mode

Framed clear channel

  • Framed clear channel (64 Kbps)

  • Unframed clear channel

Fractional framing

  • Superframe (D4/SF)

  • Extended Superframe (ESF)

  • G704

  • G704 with no CRC4

  • G703 Unframed

HDLC Features

N x 64 Kbps or N x 56 Kbps, nonchannelized data rates

(T1:N=1 to 24)

(E1:N=1 to 31)

CRC

16/32

16/32

Shared flag

Supported

Supported

Idle flag/fill

Supported

Supported

Counters:

Runts, Giants, FCS, Error, Abort Error, Align Error

Runts, Giants, FCS, Error, Abort Error, Align Error

Dual CT1/E1 GPIM LEDs

The Dual CT1/E1 Gigabit-Backplane Physical Interface Module (GPIM) has the LED listed in Table 4.

Table 4: Dual CT1/E1 GPIM LED States

LED

Color

State

Description

STATUS

Green

On

GPIM is online and functioning normally.

Amber

On

GPIM is starting up, running diagnostics, or shutting down.

Red

On

GPIM has failed.

Dual CT1/E1 GPIM Basic Configuration

To enable the Dual CT1/E1 Gigabit-Backplane Physical Interface Module (GPIM) installed on your SRX Series Services Gateway, you must configure the basic settings for the PIM. You can perform the configuration tasks for this using either the J-Web interface or the CLI.

Using the J-Web Interface

To perform basic configuration for the Dual CT1/E1 GPIM and to configure network interfaces for the services gateway using the J-Web interface:

  1. In the J-Web interface, select Configure>Interfaces>Ports.

    The Interfaces page lists the network interfaces present on the services gateway. Verify whether the interface has been configured by reviewing the information in the Configured column (yes/no).

  2. Select the name of the parent interface you want to edit.
    Note:

    You must configure the parent CT1 or CE1 interface before you configure the child T1 or E1 interface, respectively.

  3. From the CT1/CE1 Interfaces General Configuration page, for the parent CT1 or CE1 interface, select no for the Partitioning field.
  4. Click OK to save changes.
  5. Select the name of the child interface (T1 or E1) you want to edit.
  6. To use the port on the GPIM, you must assign it to a security zone other than the Null zone. Optionally, you can also assign the port an IP address (for example, 192.168.3.1/24). Enter or select the following settings:
    1. Select Configure>Security>Zones.
    2. Add or select a security zone other than Null; for example, Trust.
    3. For host inbound traffic, set the following:
      • System Services=Allow All

      • Protocols=Allow All

    4. Click OK to save changes, and click Commit to apply the configuration and other pending changes (if any).
  7. To use the port on the GPIM, you must also set security policies. Select the following settings:
    1. Select Configure>Security>Policy>Apply Policy.
    2. Set Policy Action: Default Policy Action=Permit-All.
    3. Click OK to save changes, and click Commit to apply the configuration and other pending changes (if any).

For advanced configuration information, see the Junos OS Network Interfaces Configuration Guide.

Using the CLI to Configure the CT1 Interface

To perform basic configuration for the Dual CT1/E1 GPIM (for the CT1 interface) and to configure network interfaces for the services gateway with the CLI:

Note:

You must configure the parent CT1 interface before you can configure the child T1 interface.

  • Verify that the Dual CT1/E1 GPIM is installed on the services gateway:

    show chassis hardware

  • Verify the FPC status of the interface:

    show chassis fpc

  • Configure the parent CT1 interface with no partitioning:

    set interfaces ct1-3/0/0 no-partition interface-type t1

  • Configure the child T1 interface and assign an IP address:

    set interfaces t1-3/0/0 unit 0 family inet address ip4–address/prefix

  • Assign MTU values to the child T1 interface:

    set interfaces t1-3/0/0 unit 0 mtu mtu values

  • Configure a security zone for the child T1 interface and set the configuration for host inbound traffic services and protocols:

    set security zones security-zone trust interfaces t1-3/0/0 host-inbound-traffic system-services all

    set security zones security-zone trust interfaces t1-3/0/0 host-inbound-traffic protocols all

  • Set security policies:

    set security policies default-policy permit-all

Using the CLI to Configure the CE1 Interface

To perform basic configuration for the Dual CT1/E1 GPIM (for the CE1 interface) and to configure network interfaces for the services gateway with the CLI:

Note:

You must configure the parent CE 1 interface before you can configure the child E1 interface.

  • Verify that the Dual CT1/E1 GPIM is installed on the services gateway:

    show chassis hardware

  • Verify the FPC status of the interface:

    show chassis fpc

  • Configure the parent CE1 interface with no partitioning:

    set interfaces ce1-3/0/0 no-partition interface-type e1

  • Configure the child E1 interface and assign an IP address:

    set interfaces e1-3/0/0 unit 0 family inet address ip4–address/prefix

  • Assign MTU values to the child E1 interface:

    set interfaces e1-3/0/0 unit 0 mtu mtu values

  • Configure a security zone for the child E1 interface and set the configuration for host inbound traffic services and protocols:

    set security zones security-zone trust interfaces e1-3/0/0 host-inbound-traffic system-services all

    set security zones security-zone trust interfaces e1-3/0/0 host-inbound-traffic protocols all

  • Set security policies:

    set security policies default-policy permit-all