Cisco OSM-12CT3/T1 User Guide

Cisco OSM-12CT3/T1 - Optical Services Module Multiplexor Manual

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  • Cisco OSM-12CT3/T1 | User Guide - Page 1
    a clear channel DS3 down to and including DS1, E1,and DS0 connections on the same port, with a maximum of 128 channels per DS3 port. Each OSM-12CT3/T1 can support any combination of DS3/DS1/E1/T1s up to 1023 channels. For example, each port can support the following: • 1 DS3 at 44.7 Mbps • 21 E1s at
  • Cisco OSM-12CT3/T1 | User Guide - Page 2
    high speed user data channel, rather than being multiplexed into 28 DS1 or 21 E1 lines. The data channel appears to the system as a serial interface that may be configured to use the full DS3 bandwidth or a smaller portion of the DS3 bandwidth. In unchannelized DS3 mode, the OSM-12CT3/T1 supports
  • Cisco OSM-12CT3/T1 | User Guide - Page 3
    supported: - 336 bundles per module - A maximum of 12 DS1/E1 channels per bundle - All links in a bundle should operate at the same speed - 100 ms of differential delay • High-Level Data Link Control (HDLC) • Frame Relay Configure the OSM-12CT3/T1 interfaces for Frame Relay as described in the Cisco
  • Cisco OSM-12CT3/T1 | User Guide - Page 4
    which a framer is connected. • In the channelized mode of operation, a channelized CT3/T1 OSM link can be channelized into maximum of 336 T1 data lines in an industry standard multiplexing format. Each of the T1 lines contains 24 timeslots of 64 or 56 kbps each. The T1 lines can support one or more
  • Cisco OSM-12CT3/T1 | User Guide - Page 5
    7 Configuring the Channelized 12-port CT3/T1 Optical Services Modules Supported Features Fractional E1 lines contain only a single logical channel group OSMs, refer to Chapter 10, "Configuring QoS on the Optical Services Modules." The following QoS features are supported on the Channelized OSMs:
  • Cisco OSM-12CT3/T1 | User Guide - Page 6
    " chapter of the Cisco IOS Quality of Service Solutions Configuration Guide, Release 12.1 at this URL: http://www.cisco.com/univercd/cc/td T1/NxDS0 Lines, page 7-9 • Configuring the E1 Lines, page 7-10 Configuring the T3 Controller To configure the controller, perform this task: Optical Services
  • Cisco OSM-12CT3/T1 | User Guide - Page 7
    Chapter 7 Configuring the Channelized 12-port CT3/T1 Optical Services Modules Configuring the Interfaces Step 1 Step 2 Step 3 Enables MDL message transmission. Default is no mdl transmit. Router(config-controller)# t1 1 bert channel-group 0 pattern 2^11 interval 1 (Optional) Configures bit
  • Cisco OSM-12CT3/T1 | User Guide - Page 8
    {line | payload}} (Optional) Sets the loopback mode. Default is no loopback. Step 9 Router(config-if)# [no] cablelength feet Specifies the cable length bandwidth 16000 Router (config-if)# encapsulation ppp Router (config-if)# no shutdown Router (config-if)# exit Router(config)# Optical Services
  • Cisco OSM-12CT3/T1 | User Guide - Page 9
    page 7-9 • Configuring the T1/NxDS0 Lines, page 7-9 • Configuring the E1 Lines, page 7-10 Note Bit error rate testing (BERT) is supported on each of the T1 and E1 lines. It can be done over a framed or unframed DS-1 signal. The OSM-12CT3/T1 module has four framers, each connected to three contiguous
  • Cisco OSM-12CT3/T1 | User Guide - Page 10
    -timeslots [speed 56 | 64] Router (config-if)# [no] t1 t1-number framing {sf | esf} Router (config-controller)# [no] t1 t1-number fdl ansi Router (config-controller)# [no] t1 t1-number yellow {detection | generation} Router (config-controller)# [no] t1 t1-number clock source {internal | line} Router
  • Cisco OSM-12CT3/T1 | User Guide - Page 11
    -group number timeslots list-of-timeslots speed [56 | 64] Configures a bandwidth of multiple T1 or E1 lines. Bundling T1 or E1 lines enables you to increase the bandwidth of your network links beyond that of a single T1 or E1 line without having to purchase a T3 line. OL-9465-03 Optical Services
  • Cisco OSM-12CT3/T1 | User Guide - Page 12
    the Channelized 12-port CT3/T1 Optical Services Modules Figure 7-1 shows a network using an MLPPP link. The Cisco 7600 Series router is connected to the network with an OSM-12CT3/T1 module. An OSM-12CT3/DS interface has been configured with MLPPP to carry two bundles of four T1 lines each. Each of
  • Cisco OSM-12CT3/T1 | User Guide - Page 13
    12-port CT3/T1 Optical Services Modules Configuring the Router(config)# interface serial Selects the interface. slot/port/DS0 number: channel-group number Router(config-if)# no ip is used to compute fragment size of the packet. Three supported fragment sizes are 128, 256, 512. Default delay is
  • Cisco OSM-12CT3/T1 | User Guide - Page 14
    7 Configuring the Channelized 12-port CT3/T1 Optical Services Modules Configuring Multilink PPP Minimum Links Mandatory cisco.com/univercd/cc/td/doc/product/software/ios121/121newft/121limit/121e/121 e11/12e_mlp.htm#xtocid0 The commands listed at this URL are all supported on the OSM-12CT3/T1
  • Cisco OSM-12CT3/T1 | User Guide - Page 15
    Chapter 7 Configuring the Channelized 12-port CT3/T1 Optical Services Modules Configuring the Interfaces ppp chap hostname mul1 multilink-group 1 interface serial6/12/2:0 no ip address encapsulation ppp ppp chap hostname mul1 multilink-group 1 interface
  • Cisco OSM-12CT3/T1 | User Guide - Page 16
    Configuring the Interfaces Chapter 7 Configuring the Channelized 12-port CT3/T1 Optical Services Modules 7-16 Optical Services Modules Installation and Configuration Note, 12.2SR OL-9465-03
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CH A P T E R
7-1
Optical Services Modules Installation and Configuration Note, 12.2SR
OL-9465-03
7
Configuring the Channelized 12-port CT3/T1
Optical Services Modules
This chapter describes how to configure the 12-port channelized/unchannelized DS3 Optical Services
Modules (OSM-12CT3/T1).
The chapter consists of these sections:
•
Understanding the Channelized/Unchannelized CT3/T1 Modules, page 7-1
•
Supported Features, page 7-2
•
Configuring the Interfaces, page 7-6
Understanding the Channelized/Unchannelized CT3/T1 Modules
The OSM-12CT3/T1 module provides 12DS3 interface connections using mini-SMB connectors.
Each DS3 port can be independently configured all the way from a clear channel DS3 down to and
including DS1, E1,and DS0 connections on the same port, with a maximum of 128 channels per DS3
port.
Each OSM-12CT3/T1 can support any combination of DS3/DS1/E1/T1s up to 1023 channels. For
example, each port can support the following:
•
1 DS3 at 44.7 Mbps
•
21 E1s at 2.048Mbps
•
28 DS1s at 1.5 Mbps
•
128 DS0s at 64 Kbps
An unchannelized DS3 connection provides a single serial interface data channel that may be configured
to use all of the DS3 bandwidth or a fractional portion of it. This mode is compatible with several
vendors of fractional (subrate) DS3 data service units (DSUs).
A cost, depending on the bandwidth, is associated with a serial interface. The total cost possible for 12 DS3
ports is 4096. That is, the sum of the costs of all the serial interfaces configured on 12 DS3 ports must be no
more than 4096. The
show controller t3
command displays the VC cost, which indicates the available cost
of 12 DS3 ports.
Table 7-1
shows the cost associated with each link type.