ave read the Cisco Service
Expansion Shelf Hardware Installation Guide to perform the physical installation of an SES. The
Cisco Service Expansion Shelf Hardware Installation Guide also contains all the technical
specications concerning the SES.
SES IGX Feeder Overview
The SES, shown in Figure E-1, is a 12-slot chassis with horizontally-mounted processor modules
(SES-PXMs), service modules, and backcards. Built with the MGX 8850 architecture, the SES
accepts the same double-height and single-height service modules as the MGX 8850, with a couple
exceptions. The SES processor switching module (SES-PXM) is different from the MGX 8850
PXM. (The SES-PXM is keyed so that it will not t into an MGX 8850 card slot.) In addition, the
SES IGX feeder does not support in this release either the Service Redundancy Module (SRM), the
Voice Interface Service Module (VISM), or the Route Processor Module (RPM) of the MGX 8850.
SES slots 1 and 2 are reserved for SES-PXMs, the processor module, and slots 3 through 7 accept
service modules, AUSM, FRSM, CESM. Slots 3-7 can accept 1 double-height service module or be
divided to accept 2 single-height service modules. Slot numbers 8 and 9 only apply to backcard slots.
Rules and instructions for changing double-height slots into single-height slots are given in the SES
Hardware Installation Guide.The slots are numbered as shown in Figure E-1. Cisco IGX 8400 Series Installation and Configuration, Release 9.2
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Figure E-1
Service Expansion Shelf
As an IGX feeder, the SES concentrates user ATM, Frame Relay, and circuit emulation trafc and
feeds it to an IGX 8400 series switch over an OC-3 feeder trunk. The IGX 8400 series switch
performs the switching and routing of the SES user connections through an IGX and BPX network.
Figure E-2 is a simplied diagram of the SES IGX feeder application.
Figure E-2
SES IGX Feeder Application
Single height SM
7
6
5
4
3
2
1
Single height SM
Single height SM
Single height SM
Single height SM
Single height SM
Single height SM
Single height SM
Double height SM
F
A
N

T
R
A
Y
7 RU
(12.25 in.,
31.1 cm.)
1 RU
(1.75 in.,
4.5 cm.)
PXM B
PXM A
Optional AC power tray
14
13
12
11
10
23.5 in.,
(59.7 cm.)
25046
8
9
T1/E1 ATM
T1/E1 Frame Relay
T3/E3 Frame Relay
T1/E1 Circuit Emulation
IGX 8400
switch
IGX and BPX network
Service interfaces
OC-3 ATM
feeder connection
25047
MGX 8230 -3
Main Features
For the rst release of SES IGX feeder, all features available in MGX 8850 release 1.1 will be
available. The features include: SES-PXM with 4 port OC-3c ATM port. MMF and SMF IR back cards are supported. SES-PXM ports can only be used as feeder trunks. Core redundancy for SES-PXM. Environmental monitoring. ATM, Frame Relay, and Circuit Emulation service modules: AUSM-8T1/E1 with RJ48-T1 and SMB E1 back card with UNI and IMA support. FRSM-8T1/E1 with RJ48-T1/E1 and SMB E1 back cards. FRSM-2T3E3 with BNC-2T3/E3 back cards. FRSM-HS2 with 2 port HSSI back card. FRSM-2CT3 with BNC-2T3 back card. CESM-8T1/E1 with RJ48-T1 and SMB E1 back cards. 1:1 redundancy for T3/E3 cards.
Note
No 1:1 redundancy for T1/E1 service modules. This feature will be supported in a later
release. An upgrade to the service module back cards and to the service module and PXM
software will be required. Graceful upgrade. 1000 connections per card, 4000 connections per shelf. As an IGX feeder: Four Feeders per IGX 2750 conns/IGX (1M BRAM) 7000 conns/IGX (2M BRAM) 8000 LCN/UXM (combination of trunks and ports)
The SES backplane supports a minimum of 1.2 Gbps of non-blocking switching and has a high-end
limit of 45 Gbps.
The SES can also support a wide range of services over narrowband and mid-band user interfaces.
It maps all the service trafc to and from ATM based on standardized interworking methods. When
the SES is used as a feeder, it uses a single port to communicate the aggregated trafc over an ATM
interface with an IGX 8400 series switch. Cisco IGX 8400 Series Installation and Configuration, Release 9.2
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The SES supports up to 80 channelized or non-channelized T1 and E1 interfaces on a single switch.
These interfaces support: Frame Relay UNI and NNI ATM UNI, NNI, and FUNI Frame Relay to ATM network interworking Frame Relay to ATM service interworking Circuit emulation services
Frame-based services on T3 and E3 high speed lines are also supported.
The SES also supports Inverse Multiplexing for ATM (IMA) to provide ATM connectivity below T3
or E3 rates.
The modular, software-based system architecture enables it to support new features through
downloadable software upgrades or new hardware modules.
Standards-Based Conversion to ATM
The SES converts all user-information into 53-byte ATM cells by using the appropriate ATM
Adaptation Layer (AAL) for transport over the ATM backbone network. The individual service
modules segment and reassemble (SAR) cells to eliminate system bottlenecks. The following list
shows the applicable AAL for each service: Circuit emulation services use AAL1. Frame Relay-to-ATM network interworking uses AAL5 and Frame Relay Service Specic
Convergence Sub-layer (FR-SSCS). Frame Relay-to-ATM service interworking uses both transparent and translation modes to map
Frame Relay to native ATM AAL5. Frame Forwarding uses AAL5.
The complete list of SES technical specications is contained in Appendix A of the Service
Expansion Shelf Hardware Installation Guide.
SES Management
To control the SES, you can use the Cisco WAN Manager (formerly StrataView Plus) application
(release 9.2.04) for connection management, the CiscoView application (release 2.03) for hardware
conguration, and a command line interface (CLI) for low-level control. The command line interface
is identical that of the MGX 8850 and is described in the section SES and MGX 8850 Command
Line Interface. The rmware determines the available functionality, and you can download
rmware to upgrade functionality through a TFTP application on a workstation or a PC.
The current status and conguration parameters of the SES modules reside in a SNMP Management
Information Base (MIB). Firmware updates the MIB as changes in status and conguration occur.
The control port (SLIP protocol only), the LAN (Ethernet) port, and the in-band ATM connection
(feeder application only) all support the CLI (via Telnet), TFTP, and SNMP protocols for
communicating with the SES (or an MGX 8850 switch). -5
Statistics and Command Line Interface
All statistics counters available in MGX 8850 release 1.1 are supported by the SES. There will be
no change in the command line interface from MGX 8850. See Appendix A in the C<i>isco Service
Expansion Shelf Hardware Installation Guide for a listing of the supported statistics.
The addshelf command on IGX has been modied to support adding an SES shelf to an IGXs UXM
trunk.
Alarm and Error Handling
The SES provides the same alarm and error handling as SWSW Release 9.2 and MGX 8850 Release
1.1.
SES Processor and Service Modules
In this release, the SES as an IGX feeder supports the following processor and service modules: SES Processor Switching Module (SES-PXM)This front card controls the switch and supports
two types of back cards: the user interface card and the broadband network module, which
provides the OC3 feeder trunk to an IGX. Note that SES-PXM is not identical to an MGX 8850
PXM and is keyed so that it will not t in an MGX 8850 chassis. Processor Switch Module User Interface (PXM-UI)The PXM1-UI provides user-control
of the switch. Broadband Network Module (MGX-MMF-4-155)The MMF-4-155 provides 4 SONET
OC3/STM1 ATM interfaces at 155 Mbps over multi-mode ber. Only port 1 is used as the
IGX feeder trunk in this application of the SES. Broadband Network Module (MGX-SMFIR-4-155)The SMF-4-155 provides 4 SONET
OC3/STM1 ATM interfaces at 155 Mbps over single multi-mode ber intermediate reach.
Only port 1 is used as the IGX feeder trunk in this application of the SES.
Note
The SES supports redundant processor modules (SES-PXMs) in chassis slots 1 and 2. If
either card malfunctions, the standby set automatically becomes the active set. Frame Service Module for T3 and E3 (MGX-FRSM-2E3T3)The FRSM-2E3/T3 card provides
interfaces for up to two T3 or E3 frame relay lines, each of which can support either 2 T3 lines
(each at 44.736 Mbps) or 2 E3 lines (each at 34.368Mbps) FR-UNI, FR-NNI, ATM-FUNI, or
Frame Forwarding port. Frame Service Module for channelized T3 (MGX-FRSM-2CT3)The FRSM-2CT3 card
supports interfaces for up to two T3 channelized frame relay lines, each of which supports
56 Kbps, 64 Kbps, Nx56 Kbps, Nx64 kbps, T1 ports for a total of 256 ports that can be freely
distributed across the two T3 lines. Frame Service Module for unchannelized HSSI (MGX-HS2/B) Frame Service Module for T1 (MGX-FRSM-8T1)The FRSM-8T1 card provides interfaces for
up to eight T1 lines, each of which can support one 56 Kbps or one Nx64 Kbps FR-UNI, FR-NNI
port, ATM-FUNI, or a Frame Forwarding port. Frame Service Module for T1, channelized (MGX-FRSM-8T1-C)The FRSM-8T1-C card
provides interfaces for up to eight T1 lines, each of which can support up to 24 56 Kbps or
Nx64 Kbps FR-UNI, FR-NNI, ATM-FUNI, or Frame Forwarding port. Cisco IGX 8400 Series Installation and Configuration, Release 9.2
-6 Frame Service Module for E1 (MGX-FRSM-8E1)The FRSM-8E1 card provides interfaces for
up to eight E1 lines, each of which can support one 56 Kbps or one Nx64 Kbps FR-UNI, FR-NNI,
ATM-FUNI, or Frame Forwarding port. Frame Service Module for E1, channelized (MGX-FRSM-8E1-C)The FRSM-8E1-C card
provides interfaces for up to eight E1 ch