Cisco Port Adapters

Document ID: 10320

Contents

Introduction
Prerequisites
      Requirements
      Components Used
      Conventions
Unchannelized T3 Overview
Configure
      Network Diagram
      Configurations
Verify
Troubleshoot
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Related Information

Introduction

If you have a PA-MC-2T3+ line card and you want to use this card in unchannelized mode, you must run Cisco IOS^® Software Release 12.1(5a)E1 Enterprise (JSV) on your device.

Note: This is only relevant for the PA-MC-2T3+, not the 1 port (PA-MC-T3).

This configuration demonstrates the unchannelized feature of the PA-MC-2T3+ card. In unchannelized mode, this card can connect, back-to-back or through Telco, to any of these unchannelized T3 interfaces:

• PA-T3

• PA-2T3

• PA-T3+

• PA-2T3+

Prerequisites

Requirements

There are no specific requirements for this document.

Components Used

The information in this document is based on these software and hardware versions:

• Cisco IOS Software Release 12.1(5a)E1 Enterprise (JSV)

• Port adapters in VIP2 controllers in two 7507 chassis

The information in this document was created from the devices in a specific lab environment. All of the devices used in this document started with a cleared (default) configuration. If your network is live, make sure that you understand the potential impact of any command.

Conventions

Refer to the Cisco Technical Tips Conventions for more information on document conventions.

Unchannelized T3 Overview

In the unchannelized mode of operation, a T3 link provides a single high speed user data channel, rather than to be multiplexed into 28 T1 lines. The data channel appears to the system as a serial interface that might be configured to use the full T3 bandwidth or a smaller portion of the T3 bandwidth. No industry standard exists for subdividing the T3 bandwidth, but the PA-MC-2T3+ is compatible with the proprietary formats of five vendors of T3 DSUs, when used at the far end of the T3 link.

In unchannelized T3 mode, the T3 section supports the maintenance data link (MDL) channel when it uses c-bit parity framing as well as local and network loopbacks. Bit error rate testing (BERT) is supported on the T3 link. The PA-MC-2T3+ supports Cisco High-Level Data Link Control (HDLC), Frame Relay, PPP, and Switched Multimegabit Data Service (SMDS) Data Exchange Interface (DXI) encapsulations over the serial interface.

Configure

In this section, you are presented with the information to configure the features described in this document.

Note: Use the Command Lookup Tool ( registered customers only) in order to obtain more information on the commands used in this section.

Network Diagram

This document uses this network setup:

Configurations

This document uses these configurations:

Router1
Router1#show running-config
Building configuration...
Current configuration : 2144 bytes
!
version 12.1
hostname Router1
!
enable password cisco
!
interface Serial4/0/0
ip address 10.1.1.2 255.255.255.0
dsu bandwidth 44210
framing c-bit
cablelength 10
!
interface Serial4/0/1
no ip address
shutdown
dsu bandwidth 44210
framing c-bit
cablelength 10
!
line con 0
line aux 0
line vty 0 4
!
end

Router 2
Router2#show running-config
Building configuration...
Current configuration : 1295 bytes
!
version 12.1
hostname Router2
!
enable password cisco
!
controller T3 1/0/0
no channelized  
!--- Causes interface Serial1/0/0 to appear
!
controller T3 1/0/1
!
interface Serial1/0/0
ip address 10.1.1.1 255.255.255.0
dsu bandwidth 44210
framing c-bit
cablelength 10
!
line con 0
line aux 0
line vty 0 4
!
end

Verify

Use this section in order to confirm that your configuration works properly.

The Output Interpreter Tool ( registered customers only) (OIT) supports certain show commands. Use the OIT to view an analysis of show command output.

• show interface—Use this command in order to view information about the interface.

• ping—Use this command in order to determine if a host is available on the network.

Router1#show interface s4/0/0
Serial4/0/0 is up, line protocol is up
Hardware is cyBus PODS3+ Serial
Internet address is 10.1.1.2/24
MTU 4470 bytes, BW 44210 Kbit, DLY 200 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation HDLC, crc 16, loopback not set
Keepalive set (10 sec)
Last input 00:00:04, output 00:00:02, output hang never
Last clearing of "show interface" counters never
Queueing strategy: fifo
Output queue 0/40, 0 drops; input queue 0/75, 0 drops
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
12 packets input, 1532 bytes, 0 no buffer
Received 0 broadcasts, 0 runts, 0 giants, 0 throttles
0 parity
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
6 packets output, 435 bytes, 0 underruns
0 output errors, 0 applique, 0 interface resets
0 output buffer failures, 0 output buffers swapped out
0 carrier transitions
LC=up  CA=down  TM=down LB=down TA=down LA=down 


Router2#show interface s1/0/0
Serial1/0/0 is up, line protocol is up
Hardware is cyBus 2CT3+ Serial
Internet address is 10.1.1.1/24
MTU 4470 bytes, BW 44210 Kbit, DLY 200 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation HDLC, crc 16, loopback not set
Keepalive set (10 sec)
Last input 00:00:04, output 00:00:00, output hang never
Last clearing of "show interface" counters 00:50:41
Queueing strategy: fifo
Output queue 0/40, 5 drops; input queue 0/75, 0 drops
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
5 packets input, 411 bytes, 0 no buffer
Received 0 broadcasts, 0 runts, 0 giants, 0 throttles
0 parity
0 input errors, 0 CRC, 4 frame, 0 overrun, 0 ignored, 0 abort
362 packets output, 29320 bytes, 0 underruns
0 output errors, 0 applique, 0 interface resets
0 output buffer failures, 0 output buffers swapped out
0 carrier transitions
DSU mode 0, bandwidth 44210, scramble 0 


Router1#ping 10.1.1.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 10.1.1.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/3/4 ms 


Router2#ping 10.1.1.2
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 10.1.1.2, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/3/4 ms

Troubleshoot

There is currently no specific troubleshooting information available for this configuration.

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Related Information

• Data Sheet Two - Port Enhanced Multichannel T3 Port Adapter
• PA-MC-2T3+ Multichannel T3 Port Adapter Installation and Configuration
• Release Notes for Cisco 7000 Family for Cisco IOS Release 12.1 E
• New Features in Release 12.1(5a)
• 7500 Series Product Support Page
• Cisco Technical Support - Routers
• Technical Support & Documentation - Cisco Systems