SRX 210 Services Gateway T1/E1 Mini-Physical Interface Module
The T1/E1 Mini-PIM provides the physical connection to T1 or E1 network media
types and also performs T1 or E1 framing and line-speed signaling.
Supported Standards
The T1/E1 Mini-PIM supports the following standards:
■ANSI TI.107, TI.102
■
GR 499-core, GR 253-core
■AT&T Pub 54014
■
ITU G.751, G.703
Key Features
The T1/E1 Mini-PIM provides the following key features:
■
Integrated Channel Service Unit (CSU) or Data Service Unit (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, BERT, FDL (T1 only), and Long Buildout (T1 only) diagnostics
■Multilink Frame Relay and Multilink PPP support
■
Complete configuration and management by CLI and J-Web
LEDs
The T1/E1 Mini-PIM has three LEDs. Table 1 on page 1 shows the LED states.
Table 1: T1/E1 Mini-Physical Interface Modules LED StatesDescription Status
Color Indication LED
Indicates that there is a local or remote alarm; device has detected a failure On steadily
Yellow Alarm
Indicates that there are no alarms or failures
Off
Indicates that a loopback or line state is detected
On steadily Yellow
Loopback
Indicates that the loopback is not active Off
Table 1: T1/E1 Mini-Physical Interface Modules LED States (continued)
Description Status
Color Indication LED
Indicates a carrier was detected and the internal DSU/CSU in the Mini-PIM is communicating with another DSU/CSU On steadily
Green Carrier Detector (CD)
Indicates that carrier detect is not active Off
Specifications
Table 2 on page 2 describes the physical specifications of the T1/E1 Mini-PIM.
Table 2: T1/E1 Mini-Physical Interface Modules Physical SpecificationsValue Description 0.80” H x 3.75” W x 5.9” L (2.0 cm x 9.5 cm x 14.5 cm ) Dimensions (H x W x L) 0.18 lb (82g) Weight RJ–48 Connector type Mini-PIM Form factor 32°F through 104°F (0°C through 40°C) Environmental operating temperature
–40°F through 158°F (–40°C through 70°C) Storage temperature
5% to 90% noncondensing Relative humidity
Network Interface Specifications
The T1/E1 Mini-PIM has the following specifications:
E1 Specifications T1 Specification
Specification
Transmit bit rate: 2.048 Mbps Transmit bit rate: 1.544 Mbps
Network interface specifications
E1 Specifications T1 Specification Specification N x 64 Kbps or N x 56 Kbps, nonchannelized data rates (E1:n=1 to 31) CRC 16/32 Shared Flag Idle flag/fill
Counters: Runts, Giants, FCS, Error, Abort Error, Align Error N x 64 Kbps or N x 56 Kbps, nonchannelized data rates (T1:N=1 to 24) CRC 16/32 Shared Flag Idle flag/fill
Counters: Runts, Giants, FCS, Error, Abort Error, Align Error
HDLC features
Loopback Diagnostics
■Local, Remote, Payload
■Test patterns (BERT)
■All ones
■
All zeros
■
Alternating ones and zeros (AA/55)
■1:3 or 1 in 4 pattern
■
1:7 or 1 in 8 pattern
■
3:24 - 3 bits set in every 24 bits
■
QRSS20 (Modified PRBS 2^20-1, with 14 zero suppression)
■PRBS 2^7-1 - PRBS 2^9-1 (as specified in ITU-T O.153)
■PRBS 2^11-1 (as specified in ITU-T O.153)/2047 pattern
■PRBS 2^15-1 (as specified in ITU-T O.151/O.153)
■PRBS 2^20-1 (as specified in ITU-T O.153)
■
Programmable word or 32-bit programmable pattern
■Network (T1) alarms
■
LOS, LOF, AIS, YLW
T1 Configuration
To configuration properties on a T1 interface:
1.
Select
Configuration>Quick Configuration >Interfaces
if the Interfaces Quick
Configuration page is not displayed.
2.
Enter information into the Interfaces Quick Configuration page, as described in
Table 3 on page 5. — TBD
3.
Click one of the following buttons:
■
Click
OK
to apply the configuration and return to the J-Web Quick
Configuration page.
■
Click
Cancel
to cancel your entries and return to the J-Web Quick
Configuration page.
The properties you can configure on a T1 interface are displayed, as shown in
Figure 1 on page 4.
Table 3: T1 Quick Configuration Summary Your Action Function Field Logical Interfaces Click Add. Defines one or more logical units that you connect
to this physical T1 interface. You must define at least one logical unit for a T1 interface. You can define multiple units if the encapsulation type is Frame Relay.
Add logical interfaces
Type a text description of the logical interface to more clearly identify it in monitoring displays. (Optional) Describes the logical interface.
Logical Interface Description
1. Type one or more IPv4 addresses and prefixes. For example:
10.10.10.10/24 2. Click Add. 3. Click OK. Specifies one or more IPv4 addresses for the
interface. IPv4 Addresses
and Prefixes
Type a text description of the T1 interface to more clearly identify it in monitoring displays. (Optional) Adds supplementary information about
the physical T1 interface. Physical Interface
Description
Type a value between 256 and 1504 bytes. The default MTU for T1 interfaces is 1504.
Specifies the maximum transmission unit size for the T1 interface.
MTU (bytes)
From the list, select one of the following: ■ internal—Services Router's own system
clock (the default)
■ external—Clock received from the T1 interface
Specifies the transmit clock source for the T1 line. Clocking
■ To enable scheduling, select the check box. ■ To disable scheduling, clear the check box. Enables scheduling on logical interfaces.
Allows you to configure multiple output queues on a logical interface and associate an output scheduler and shaping rate with the queues.
Per unit scheduler
Encapsulation
From the list, select the encapsulation for this T1 interface:
■ PPP
■ Frame Relay ■ Cisco HDLC Specifies the encapsulation type for traffic on the
interface. Encapsulation
■ To enable CHAP, select the check box. ■ To disable CHAP, clear the check box. Enables or disables CHAP authentication on a T1
interface with PPP encapsulation only. Enable CHAP
CHAP Local Identity (available if CHAP is enabled)
■ To enable, select the check box (the default). ■ To disable, clear the check box.
Specifies that the T1 interface uses the Internet Router's system hostname in CHAP challenge and response packets.
Use System Host Name
Table 3: T1 Quick Configuration Summary (continued)
Your Action Function
Field
Type a local name for this T1 interface. If Use System Host Name is disabled, specifies the
local name for CHAP to use. Local Name
Type the CHAP client name. Identifies the client or peer with which the Internet
Router communicates on this T1 interface. CHAP Peer Identity
Type a password that is known to the other side of the connection. Use a combination of letters and numbers that is difficult for others to guess. Specifies the secret password for CHAP
authentication, known to both sides of the connection.
CHAP Secret
T1 Options
TBD Specifies the bit error rate test (BERT) algorithm to use during a BERT.
BERT is supported only when transmission is unframed. (See the Unframed option.) Bert Algorithm
Type a value between 3 and 7, or 0. For example, a value of 6 specifies that 1 bit out of 1,000,000 is transmitted in error. The default is 0 (no bits are transmitted in error).
Specifies the exponent n in the bit error rate 10–n. Bert Error Rate
Type a value between 1 and 240. The default is 10.
Specifies the length of time—in seconds—of the BERT.
Bert Period
From the list, select one of the following: ■ nx56—7 bits per byte
■ nx64—8 bits per byte (the default) Specifies the byte encoding method.
Byte Encoding
Select 16 or 32. The default value is 16. Specifies the number of bits in the frame checksum.
A 32–bit checksum provides more reliable packet verification, but is not supported by some older equipment.
Frame Checksum
From the list, select one of the following: ■ esf—Extended superframe (the default) ■ sf—Superframe
Specifies the framing mode for the T1 line. Framing Mode
■ To enable, select the check box. ■ To disable, clear the check box. Enables or disables data inversion. Data inversion
is normally used only in alternate mark inversion (AMI) mode.
Table 3: T1 Quick Configuration Summary (continued)
Your Action Function
Field
From the list, select one of the following line buildouts: ■ 0–132 (0 m–40 m) (the default) ■ 133–265 (40 m–81 m) ■ 266–398 (81 m–121 m) ■ 399–531 (121 m–162 m) ■ 532–655 (162 m–200 m) ■ long-0db ■ long-7.5db ■ long-15db ■ long-22.5db Specifies the T1 line buildout in feet for cables
655 feet (200 m) or shorter, or in decibels for longer cables.
Line buildout compensates for the loss in decibels based on the distance from the device to the first repeater in the circuit.
Line Buildout
From the list, select one of the following: ■ ami—Alternate mark inversion
■ b8zs—Binary 8 zero substitution (the default) Specifies the line encoding method.
Line Encoding
From the Loopback list, select one of the following:
■ local—Traffic loops from the transmitter to the receiver at the T1 interface during tests. ■ remote—Traffic loops from the receiver to
the transmitter at the T1 interface during tests.
Configures the T1 interface as a loopback interface for testing purposes.
When T1 is configured as a local loopback interface, the router transmits test traffic simultaneously to the CSU and to the receiver at the T1 interface. When T1 is configured as a remote loopback interface, test traffic transmitted by the CSU is simultaneously received at the T1 interface and transmitted back to the CSU.
Loopback
Type numeric values from 1 through 24. You can use any combination of time slots. To configure ranges, use hyphens. To configure discontinuous slots, use commas. For example:
1–5,10,24 Specifies the number of time slots allocated to a
fractional T1 interface. By default, a T1 interface uses all the time slots.
Timeslots
set interface t1-1/0/0 unit 0 family inet address <ipaddress/mask>
set security zones security-zone zone1 interfaces t1-1/0/0.0 host-inbound-traffic system-services all
set security zones security-zone zone1 interfaces t1-1/0/0.0 host-inbound-traffic protocols all set security policies default-policy permit-all
CLI
E1 Configuration
1.
Select
Configuration>Quick Configuration >Interfaces
if the Interfaces Quick
Configuration page is not displayed.
2.
Enter information into the Interfaces Quick Configuration page, as described in
Table 4 on page 9. — TBD
3.
Click one of the following buttons:
■
Click
OK
to apply the configuration and return to the J-Web Quick
Configuration page.
■
Click
Cancel
to cancel your entries and return to the J-Web Quick
Configuration page.
The properties you can configure on an E1 interface are displayed, as shown in
Figure 2 on page 9.
Figure 2: E1 Mini-PIM Quick Configuration Page
Table 4: E1 Quick Configuration Summary
Your Action Function
Field
Table 4: E1 Quick Configuration Summary (continued)
Your Action Function
Field
Click Add. Defines one or more logical units that
you connect to this physical E1 interface. You must define at least one logical unit for an E1 interface. You can define multiple units if the encapsulation type is Frame Relay.
Add logical interfaces
Type a text description of the logical interface to more clearly identify it in monitoring displays.
(Optional) Describes the logical interface. Logical Interface Description
1. Type one or more IPv4 addresses and prefixes. For example: 10.10.10.10/24
2. Click Add. 3. Click OK. Specifies one or more IPv4 addresses for
the interface. IPv4 Addresses and Prefixes
Type a text description of the E1 interface to more clearly identify it in monitoring displays.
(Optional) Adds supplementary information about the physical E1 interface.
Physical Interface Description
Type a value between 256 and 1504 bytes. The default MTU for E1 interfaces is 1504.
Specifies the maximum transmission unit size for the E1 interface.
MTU (bytes)
From the list, select one of the following: ■ internal—Services Router's own
system clock (the default) ■ external—Clock received from the
E1 interface Specifies the transmit clock source for
the E1 line. Clocking
■ To enable scheduling, select the check box.
■ To disable scheduling, clear the check box.
Enables scheduling on logical interfaces. Allows you to configure multiple output queues on a logical interface and associate an output scheduler and shaping rate with the queues. Per unit scheduler
Encapsulation
From the list, select the encapsulation for this E1 interface:
Specifies the encapsulation type for traffic on the interface.
Table 4: E1 Quick Configuration Summary (continued)
Your Action Function
Field
CHAP Local Identity (available if CHAP is enabled)
■ To enable, select the check box (the default).
■ To disable, clear the check box. Specifies that the E1 interface uses the
Internet Router's system hostname in CHAP challenge and response packets. Use System Host Name
Type a local name for this E1 interface. If Use System Host Name is disabled,
specifies the local name for CHAP to use. Local Name
Type the CHAP client name. Identifies the client or peer with which
the Internet Router communicates on this E1 interface.
CHAP Peer Identity
Type a password that is known to the other side of the connection. Use a combination of letters and numbers that is difficult for others to guess.
Specifies the secret password for CHAP authentication, known to both sides of the connection.
CHAP Secret
E1 Options
TBD Specifies the bit error rate test (BERT)
algorithm to use during a BERT. BERT is supported only when transmission is unframed. (See the Unframed option.)
Bert Algorithm
Type a value between 3 and 7, or 0. For example, a value of 6 specifies that 1 bit out of 1,000,000 is transmitted in error. The default is 0 (no bits are transmitted in error).
Specifies the exponent n in the bit error rate 10–n.
Bert Error Rate
Type a value between 1 and 240. The default is 10.
Specifies the length of time—in seconds—of the BERT. Bert Period
Select 16 or 32. The default value is 16. Specifies the number of bits in the frame
checksum. A 32–bit checksum provides more reliable packet verification, but is not supported by some older equipment. Frame Checksum
From the list, select one of the following: ■ g704—The default
■ g704–no-crc4—G704 without cyclic redundancy check 4 (CRC4) ■ unframed—Unframed transmission
format Specifies the framing mode for the E1
line. Framing Mode
■ To enable, select the check box. ■ To disable, clear the check box. Enables or disables data inversion. Data
inversion is normally used only in alternate mark inversion (AMI) mode. Invert Data
Table 4: E1 Quick Configuration Summary (continued)
Your Action Function
Field
From the Loopback list, select one of the following:
■ local—Traffic loops from the transmitter to the receiver at the E1 interface during tests.
■ remote—Traffic loops from the receiver to the transmitter at the E1 interface during tests.
Configures the E1 interface as a loopback interface for testing purposes.
When E1 is configured as a local loopback interface, the router transmits test traffic simultaneously to the CSU and to the receiver at the E1 interface. When E1 is configured as a remote loopback interface, test traffic
transmitted by the CSU is simultaneously received at the E1 interface and transmitted back to the CSU. Loopback
Type numeric values from 2 through 32. Separate discontinuous entries with commas, and use hyphens to indicate ranges. For example:
2,4,7–9 Specifies the number of time slots
allocated to a fractional E1 interface. By default, an E1 interface uses all the time slots.
Timeslots
set interface e1-1/0/0 unit 0 family inet address <ipaddress/mask>
set security zones security-zone zone1 interfaces e1-1/0/0.0 host-inbound-traffic system-services all
set security zones security-zone zone1 interfaces e1-1/0/0.0 host-inbound-traffic protocols all set security policies default-policy permit-all
CLI
Related Topics ■
