Table Of Contents
1.1.27 Version Software Release Notes Cisco WAN MGX 8850, 8230, and 8250 Software
Features Introduced in Release 1.1.27
Features Introduced in Release 1.1.26
Features Introduced in Release 1.1.25
Features Introduced in Release 1.1.24
Continued Support for the MGX 8850
Features Introduced in Release 1.1.23
Features Introduced in Release 1.1.22
Features Introduced in Release 1.1.21
Features Introduced in Release 1.1.12
Features Introduced in Release 1.1.11
Features Introduced in Release 1.1.10
Release 1.1.27 MGX 8850 Hardware
MGX 8220 Hardware Not Supported on Release 1.1.27 of the MGX 8850
MGX 8220 Hardware that has been superseded on the MGX 8850 by MGX 8850-specific Hardware
MGX 8220 Hardware Not Supported on the MGX 8850
Features Not Supported in this Release
Major Network Management Features
Problems Fixed in Release 1.1.27
Problems Fixed in Release 1.1.26
Problems Fixed in Release 1.1.25
Problems Fixed in Release 1.1.24
Problems Fixed in Release 1.1.23
Problems Fixed in Release 1.1.22
Problems Fixed in Release 1.1.21
Problems Fixed in Release 1.1.20
Problems Fixed in Release 1.1.01
Problems Fixed in Release 1.1.00
Problems Fixed for RPM in 12.0.5T1
Problems Fixed for RPM in 12.0.4T
MGX 8230, 8250 and 8850 Software Interoperability with other products
MGX 8850 Boot and Runtime Firmware and IOS Requirements
MGX 8250 Boot and Runtime Firmware and IOS Requirements
MGX 8230 Boot and Runtime Firmware and IOS Requirements
Special Installation and Upgrade Requirements
Single PXM Installation Procedure
Installation Procedure For Redundant PXMs:
Service Module Firmware Download Procedure
Service Module Installation/Upgrade and Flashdownload Requirements.
Known Anomalies for Platform Software and Service Module Firmware
Known Anomalies for RPM release 12.1(1)T
Known Anomalies for RPM Release 12.0(5)T1
RPM Configuration Examples for MPLS-based Virtual Private Networks
One PE - Two CE Configuration - OSPF & IBPG Between PEs & EBGP between PE-CE
One PE - Two CE Configuration - OSPF & IBPG Between PEs & RIP between PE-CE
One PE - Two CE Configuration - OSPF & IBPG Between PEs & STATIC ROUTES between PE-CE
1.1.27 Version Software Release Notes Cisco WAN MGX 8850, 8230, and 8250 Software
About These Release Notes
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About the 1.1.27 Release
This is a maintenance release including all features supported up to release 1.1.26.
About the 1.1.26 Release
This is a maintenance release including all features supported up to release 1.1.25.
About the 1.1.25 Release
This is a maintenance release including all features supported up to release 1.1.24.
About the 1.1.24 Release
This is a maintenance release including all features supported up to release 1.1.23. The 1.1.24 release supports two new switches, the MGX 8230 and the MGX 8250.
About the 1.1.23 Release
Release 1.1.23 supports the same network scenarios as Release 1.1.12 and 1.1.22.
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Feeder concentration to the BPX 8600 and all other endpoints (no BPX 8600 BNI trunk connections). IGX endpoints are supported in this release using Switch Software 9.2.
The MGX 8850 provides multiservice, high density ATM, Circuit Emulation and Frame Relay feeder concentration to the BPX 8600. The MGX 8850 connects to the BPX 8600 using the feeder trunk protocol over a PXM port. On the BPX 8600 side the feeder connection trunk to the MGX 8850 is supported on the BXM card only. Interoperability support is limited to (a) MGX 8850 to MGX 8850, (b) MGX 8850 to MGX 8220, c) MGX 8850 as a feeder to BPX 8600 (FR to ATM service interworking) but with IGX endpoints, and (d) MGX 8850 to IGX.
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Stand-alone capability allows the MGX 8850 to act as an edge concentrator to any vendor ATM network which implies service interoperability with other vendor's equipment. All connections for stand-alone are local switching connections.
Features Introduced in Release 1.1.27
None.
Features Introduced in Release 1.1.26
A new command was introduced to view the backplane capability for debug and diagnostic purposes to be used by TAC and development engineering. No new features were introduced in this release.
Features Introduced in Release 1.1.25
None.
Features Introduced in Release 1.1.24
While no new features are incorporated into Software Release 1.1.24, this software release does provide support to two new wide area switches, the MGX 8230 and the MGX 8250, as well as continued support for the MGX 8850 switch.
MGX 8230
he MGX 8230 functions as a feeder to the IGX, BPX or MGX 8850 switches, or can be used for bringing in service. It has a 7-slot (double-height) chassis, and the slots are oriented in the following manner:
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Figure 1 shows the MGX 8230 with its door attached. Note that there are light pipes in the door that display the status of the processor models (PXMs). Figure 2 is a conceptual drawing of an MGX 8230 showing the dimensions and the slot numbering. The slot numbering is as it appears from the front of the MGX 8230; slots 8 and 9 refer to back card slots only.
Note that the following features are not supported in this release, but are planned for future releases:
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Figure 1 MGX 8230 with Door Attached
Figure 2 MGX 8230 Dimensions
Note
Main Features
Release 1.0 of MGX 8230 includes:
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The MGX 8230 backplane supports a minimum of 1.2 Gbps of non-blocking switching and has a high-end limit of 21 Gbps with the PXM1. Individual line rates can range from DS0 through OC-3.
The MGX 8230 can also support a wide range of services over narrowband and mid-band user interfaces. It maps all the service traffic to and from ATM circuits based on standardized interworking methods.
The MGX 8230 supports up to 64 channelized or non-channelized T1 and E1 interfaces on a single IP + TM multiservice gateway. These interfaces support:
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Frame-based services on T3 and E3 high-speed lines are also supported.
The MGX 8230 also supports Inverse Multiplexing for ATM (IMA) to provide ATM connectivity below T3 or E3 rates via the AUSM-8T1/E1 (AUSM/B).
The modular, software-based system architecture enables it to support new features through downloadable software upgrades or new hardware modules.
The Service Resource Module-3T3 (MGX-SRM-3T3/B), when supported in a future release, will be able to support up to 64 T1 interfaces over its three T2 lines and provide 1:N redundancy for the T1 and E1 cards. This feature is described in the MGX 8230 switch documentation, but is currently not supported by the hardware.
Standards-Based Conversion to ATM
The MGX 8230 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:
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Refer to the Cisco MGX 8230 Installation and Configuration Guide for further installation and physical descriptions for the MGX 8230 switch.
MGX 8230 Cards
MGX 8230 Processor Switch Module (PXM1)
The MGX 8230 Processor Switch Module (PXM1) performs shelf control and shared-memory switching functions. It also serves as a data processing and ATM interface card. The PXM1 processor module for the MGX 8230 is identical to the PXM1 for the MGX 8250.
Primarily, the MGX 8230 PXM1 controls the switch and provides 1.2 Gbps of non-blocking, shared memory ATM switching and ATM trunking up to OC-12 speed. In addition, the PXM features:
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The PXM1 and its two types of back cards make up the required control card set. The following are model numbers of cards supported by the MGX 8230 for this release:
The following are model numbers of cards supported by the MGX 8230 for this release:
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PXM1 User Interface Back Card
The PXM1 User Interface card (PXM-UI) provides the MGX 8230 with the several user- interface ports. It mates with an PXM1 through the backplane and is installed in a back card slot (slot 8 or 9). As seen from the back of the MGX 8230, the PXM-UI will plug into the slot that is on the right side of its corresponding PXM1. The user-interface ports provide the following functions:
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The PXM UI has the following physical connectors and interfaces:
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MGX 8230 OC-3 Uplink Back Card
The MGX 8230 Uplink back card, which mates with a corresponding PXM1 through the backplane, provides the feeder trunk to the MGX switch. This uplink back card can provide either a multi-mode or single-mode fiber OC-3 interface:
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FRSM Cards
The primary function of the FRSM is to convert between the Frame Relay-formatted data and ATM/AAL5 cell-formatted data. It converts the header format and translates the address for Frame Relay port/DLCIs, ATM-Frame UNI (FUNI) port/frame address, or frame forwarding port, and the ATM virtual connection identifiers (VPI/VCIs).
The MGX 8230 supports the following FRSM models:
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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. Note that this unchannelized card cannot be configured to support sub-T rates.•
The FRSM-8T1-C card provides interfaces for up to eight T1 lines, each of which can support up to twenty-four 56 Kbps or Nx64 Kbps FR-UNI, FR-NNI, ATM-FUNI, or Frame Forwarding ports.•
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.•
The FRSM-8E1-C card provides interfaces for up to eight E1 channelized Frame Relay lines, each of which can support multiple (up to thirty-one) 56 Kbps or Nx64 Kbps FR-UNI, FR-NNI, ATM-FUNI, or Frame Forwarding ports.•
The FRSM-2E3/T3 card provides interfaces for up to two T3 or E3 Frame Relay lines, each of which can support either two T3 lines (each at 44.736 Mbps) or two E3 lines (each at 34.368 Mbps) FR-UNI, FR-NNI, ATM-FUNI, or Frame Forwarding ports.•
The FRSM-2CT3 card supports interfaces for up to two T3 channelized Fame 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.•
The FRSM-HS2 provides unchannelized Frame Relay service for up to 1000 user-connections over two HSSI lines on the SCSI2-2HSSI back card. The maximum rate for the card is 104 Mbps. Each port can operate in either DTE or DCE mode with incremental rates of N x T1 or N x E1 up to 52 Mbps.OC-12 Uplink Back Card
For Automatic Protection Switching (APS) requires the "B" model—an SMFLR-1-622/B.
SMFIR-1-622 Back Card
For Automatic Protection Switching (APS) requires the "B" model—an SMFIR-1-622/B.
BNC-2T3 Back Card
BNC-2E3 Back Card
Two versions of the BNC-2E3 card are available. The BNC-2E3A applies to Australia only, and the BNC-2E3 applies to all other sites that require E3 lines on the PXM uplink card.
ATM Universal Service Module
AUSM/B Front Card
AUSM/B Back Cards
The MGX-AUSM/B-8T1 and MGX-AUSM/B-8E1 use the generic 8-port T1 or E1 line modules that operate with the 8-port service modules. The standard T1 version of the back card has eight RJ-48 connectors. The standard versions of the E1 back card have either eight RJ-48 connectors or eight pairs of SMB connectors. The following back cards are compatible with the AUSM/B:
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Circuit Emulation Service Module 8T1E1
CESM Models
The MGX 8230 supports the following CESM models:
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The CESM-8T1 card provides interfaces for up to eight T1 lines, each of which is a 1.544 Mbps structured or unstructured synchronous data stream.•
The CESM-8E1 card provides interfaces for up to eight E1 lines, each of which is a 2.048 Mbps structured or unstructured synchronous data stream.•
The CESM-8T1E1 card set consists of the CESM-8T1E1 front card and one of the following back cards:
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Redundancy Architecture
Since the MGX 8230 chassis is a smaller form factor MGX 8850, most of the redundancy features available in MGX 8850 are available in MGX 8230 chassis. The following is a list of available redundancy features on the MGX 8230 chassis.
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MGX 8230 Management
To give you access for control purposes, the MGX 8230 switch supports high- and low-level user interfaces. You can use the Cisco WAN Manager application (formerly StrataView Plus) for connection management, the CiscoView application for hardware configuration, and a command line interface for low-level control of hardware functionality and connection control. An assortment of ports and protocols supports these user-interfaces. For communicating with the MGX 8230 switch, the control port (SLIP protocol only), the LAN (Ethernet) port, and the in-band ATM connection (feeder application only) all support access by the command line interface (CLI) via Telnet, TFTP, and SNMP protocols.
The downloadable firmware on each card determines the functionality, and you can upgrade functionality by downloading new firmware through a TFTP application on a workstation or a PC.
The current status and configuration parameters of the MGX 8230 modules reside in a Management Information Base (MIB). The firmware on each card updates the MIB as changes in status and configuration occur.
MGX 8250
The Cisco MGX 8250 wide-area edge switch supports:
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It does not support PNNI, despite the fact that some CLI commands may show options for PNNI.
This chapter contains a brief outline of the features of the Cisco MGX 8250 switch. An illustration of the AC-powered version of the switch appears in Figure 3.
Figure 3 MGX 8250 Switch
The Applications of the MGX 8250 Switch
The MGX 8250 switch operates in two operational applications:
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For a description of how to configure the switches for a particular application, see the MGX 8250 Switch Installation and Configuration Guide.
The switch is also capable of supporting Cisco Multiprotocol Label Switching (MPLS).
Universal Edge Architecture
The MGX 8250 switch can support a wide range of services over narrowband and mid-band user interfaces. It maps all the service traffic to and from ATM by using standardized interworking methods.
The supported interfaces for user-traffic are:
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The optional Service Resource Module-3T3 (MGX-SRM-3T3/B) can support up to 80 T1 interfaces over its three T3 lines and provide 1:N redundancy for the T1 and E1 cards.
The modular, software-based system architecture enables the switch to support new features through downloadable software upgrades or new hardware modules.
The MGX 8250 backplane supports a minimum of 1.2 Gbps of non-blocking switching. Individual line rates range from DS0 through OC-12.
Standards-Based Conversion to ATM
The MGX 8250 switch 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:
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MGX 8250 Cards
The MGX 8250 switch supports core cards and service modules. The Processor Switching Module (PXM) and optional Service Resource Module (SRM) are core cards. In addition to the PXM being a core card, it is also part of a a card set. A card set consists of a front card, a back card, and a daughter card. Service modules are not combined in this manner and are never part of a card set. Instead, service modules provide the interface to the transport technologies of the CPE—Frame Relay, ATM, and so on. The MGX 8250 enclosure contains up to 24 service modules (I/O cards) and 4 optional Service Redundancy Modules (SRMs) provide redundancy. A card set consists of a front card with its attached daughter card and a back card (or line module). The front card contains the processing intelligence and, on the daughter card, the firmware that distinguishes the interface (OC-3, T3, E3, and so on). The back card is a simple card that provides the electrical interface for one or more lines of a particular type. The MGX 8250 front and back cards are the:
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This front card controls the switch and supports external interfaces for user-access and trunking or UNI ports. The back cards consist of a user interface card (PXM-UI) and a broadband network module (see subsequent list items).•
The PXM1-UI is the user interface card that has various types of ports to let you access and control the switch.•
The SMFIR-1-622 is a broadband network module for the PXM and provides a SONET OC12/STM4 ATM interface at 622 Mbps.•
The MMF-4-155 is a broadband network module for the PXM and provides 4 SONET OC3/STM1 ATM interfaces at 155 Mbps.•
The MGX-BNC-2T3 is a broadband network module for the PXM and provides 2 T3 ATM interfaces.•
The MGX-BNC-2E3 is a broadband network module for the PXM and provides 2 E3 ATM interfaces. A version for Australia, New Zealand, and elsewhere is available (MGX-BNC-2E3A).•
The MGX-FRSM-2E3/T3 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, ATM-FUNI, or Frame Forwarding port.•
The MGX-FRSM-2CT3 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.•
The MGX-HS2/B supports interfaces for 2 unchannelized HSSI lines, each of which supports approximately 51 Mbps. With both lines operating, maximum throughput is 70 Mbps.•
The AX-FRSM-8T1 provides interfaces for up to eight T1 lines, each of which can support one 56 Kbps or one Nx64 Kbps FR-UNI, ATM-FUNI, or a Frame Forwarding port. Note that this unchannelized card cannot be configured to support sub-T rates.•
The AX-FRSM-8T1c provides interfaces for up to eight T1 lines, each of which can support up to 24 56 Kbps or N x 64 Kbps FR-UNI, ATM-FUNI, or Frame Forwarding port.•
The AX-FRSM-8E1 provides interfaces for up to eight E1 lines, each of which can support one 56 Kbps or one N x 64 Kbps FR-UNI, ATM-FUNI, or frame forwarding port.•
The AX-FRSM-8E1c provides interfaces for up to 8 E1 channelized frame relay lines Each line can support N x 64-Kbps or (up to 31) 56-Kbps FR-UNI, ATM-FUNI, or frame forwarding ports.•
The MGX-AUSM/B-8T1 provides interfaces for up to eight T1 lines. You can group N x T1 lines to form a single, logical interface (IMA).•
The MGX-AUSM/B-8E1 provides interfaces for up to eight E1 lines. You can group N x E1 lines to form a single, logical interface (IMA).•
The AX-CESM-8T1 provides interfaces for up to eight T1 lines, each of which is a 1.544 Mbps structured or unstructured synchronous data stream.•
The AX-CESM-8E1 provides interfaces for up to eight E1 lines, each of which is a 2.048-Mbps structured or unstructured synchronous data stream.•
The RPM is a Cisco 7200-series router redesigned as a double-height card. Each RPM uses two single-height back cards. The back-card types are: single-port Fast Ethernet, four-port Ethernet, and single-port (FDDI).•
The optional MGX-SRM-3T3/B provides bit error rate testing (BERT), 1:N redundancy for T1 and E1 service modules, and a de-multiplexing function for T1 service called bulk mode.•
A multi-personality back card that supports either X.25 or V.35 interface.MGX 8250 Management
To give you access for control purposes, the MGX 8250 switch supports high- and low-level user interfaces. You can use the Cisco WAN Manager application (formerly StrataView Plus) for connection management, the CiscoView application for hardware configuration, and a command line interface for low-level control of hardware functionality and connection control. An assortment of ports and protocols supports these user-interfaces. For communicating with the MGX 8250 switch, the control port (SLIP protocol only), the LAN (Ethernet) port, and the in-band ATM connection (feeder application only) all support access by the command line interface (CLI) via Telnet, TFTP, and SNMP protocols.
The downloadable firmware on each card determines the functionality, and you can upgrade functionality by downloading new firmware through a TFTP application on a workstation or a PC.
The current status and configuration parameters of the MGX 8250 modules reside in a Management Information Base (MIB). The firmware on each card updates the MIB as changes in status and configuration occur.
Continued Support for the MGX 8850
The Cisco MGX 8850 wide-area edge switch supports:
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It does not support PNNI, despite the fact that some CLI commands may show options for PNNI.
An illustration of the AC-powered version of the switch appears in Figure 4.
Figure 4 MGX 8850 Switch
The Applications of the MGX 8850 Switch
The MGX 8850 switch operates in two operational applications:
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For a description of how to configure the switches for a particular application, see the MGX 8250 Switch Installation and Configuration Guide.
The switch is also capable of supporting Cisco Multi-Protocol Label Switching (MPLS).
Universal Edge Architecture
The MGX 8850 switch can support a wide range of services over narrowband and mid-band user interfaces. It maps all the service traffic to and from ATM by using standardized interworking methods. When the MGX 8850 switch operates as a feeder, it uses a single port to communicate the aggregated traffic over an ATM interface with an MGX 8850 or BPX 8600-series switch.
The supported interfaces for user-traffic are:
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The optional Service Resource Module-3T3 (MGX-SRM-3T3/B) can support up to 80 T1 interfaces over its 3 T3 lines and provide 1:N redundancy for the T1 and E1 cards.
The modular, software-based system architecture enables the switch to support new features through downloadable software upgrades or new hardware modules.
The MGX 8850 backplane supports a minimum of 1.2 Gbps of non-blocking switching up to
45 Gbps. Individual line rates range from DS0 through OC-12.Standards-Based Conversion to ATM
The MGX 8850 switch 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:
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MGX 8850 Cards
The MGX 8850 switch supports two types of card sets: the core cards (or core modules) and service modules. The Processor Switching Module (PXM) and optional Service Resource Module (SRM) are core cards. The service modules provide the interface to the transport technologies of the CPE—Frame Relay, ATM, and so on. The MGX 8850 enclosure contains up to 24 service modules (I/O cards) and 4 optional Service Redundancy Modules (SRMs) provide redundancy. A card set consists of a front card with its attached daughter card and a back card (or line module). The front card contains the processing intelligence and, on the daughter card, the firmware that distinguishes the interface (OC-3, T3, E3, and so on). The back card is a simple card that provides the electrical interface for one or more lines of a particular type. The MGX 8850 front and back cards are the:
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This front card controls the switch and supports external interfaces for user-access and trunking or UNI ports. The back cards consist of a user interface card (PXM-UI) and a broadband network module (see subsequent list items).•
The PXM1-UI is the user interface card that has various types of ports to let you access and control the switch.•
The SMFIR-1-622 is a broadband network module for the PXM and provides a SONET OC12/STM4 ATM interface at 622 Mbps.•
The MMF-4-155 is a broadband network module for the PXM and provides 4 SONET OC3/STM1 ATM interfaces at 155 Mbps.•
The MGX-BNC-2T3 is a broadband network module for the PXM and provides 2 T3 ATM interfaces.•
The MGX-BNC-2E3 is a broadband network module for the PXM and provides 2 E3 ATM interfaces. A version for Australia, New Zealand, and elsewhere is available (MGX-BNC-2E3A).•
The MGX-FRSM-2E3/T3 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, ATM-FUNI, or Frame Forwarding port.•
The MGX-FRSM-2CT3 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.•
The MGX-HS2/B supports interfaces for 2 unchannelized HSSI lines, each of which supports approximately 51 Mbps. With both lines operating, maximum throughput is 70 Mbps.•
The AX-FRSM-8T1 provides interfaces for up to eight T1 lines, each of which can support one 56 Kbps or one Nx64 Kbps FR-UNI, ATM-FUNI, or a Frame Forwarding port.•
The AX-FRSM-8T1c provides interfaces for up to eight T1 lines, each of which can support up to 24 56 Kbps or N x 64 Kbps FR-UNI, ATM-FUNI, or Frame Forwarding port.•
The AX-FRSM-8E1 provides interfaces for up to eight E1 lines, each of which can support one 56 Kbps or one N x 64 Kbps FR-UNI, ATM-FUNI, or frame forwarding port.•
The AX-FRSM-8E1c provides interfaces for up to 8 E1 channelized frame relay lines Each line can support N x 64-Kbps or (up to 31) 56-Kbps FR-UNI, ATM-FUNI, or frame forwarding ports.•
The MGX-AUSM/B-8T1 provides interfaces for up to eight T1 lines. You can group N x T1 lines to form a single, logical interface (IMA).•
The MGX-AUSM/B-8E1 provides interfaces for up to eight E1 lines. You can group N x E1 lines to form a single, logical interface (IMA).•
The AX-CESM-8T1 provides interfaces for up to eight T1 lines, each of which is a 1.544 Mbps structured or unstructured synchronous data stream.•
The AX-CESM-8E1 provides interfaces for up to eight E1 lines, each of which is a 2.048-Mbps structured or unstructured synchronous data stream.•
The RPM is a Cisco 7200-series router redesigned as a double-height card. Each RPM uses two single-height back cards. The back-card types are: single-port Fast Ethernet, four-port Ethernet, and single-port (FDDI).•
The optional MGX-SRM-3T3/B provides bit error rate testing (BERT), 1:N redundancy for T1 and E1 service modules, and a de-multiplexing function for T1 service called bulk mode.•
A multi-personality back card that supports either X.25 or V.35 interface.MGX 8850 Management
To give you access for control purposes, the MGX 8850 switch supports high and low-level user interfaces. You can use the Cisco WAN Manager application (formerly StrataView Plus) for connection management, the CiscoView application for hardware configuration, and a command line interface for low-level control of hardware functionality and connection control. An assortment of ports and protocols supports these user-interfaces. For communicating with the MGX 8850 switch, the control port (SLIP protocol only), the LAN (Ethernet) port, and the in-band ATM connection (feeder application only) all support access by the command line interface (CLI) via Telnet, TFTP, and SNMP protocols.
The downloadable firmware on each card determines the functionality, and you can upgrade functionality by downloading new firmware through a TFTP application on a workstation or a PC.
The current status and configuration parameters of the MGX 8850 modules reside in a Management Information Base (MIB). The firmware on each card updates the MIB as changes in status and configuration occur.
Features Introduced in Release 1.1.23
MGX 8850 Release 1.1.23 is a maintenance release of Release 1.1.22. In addition, it introduces the following new features:
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Features Introduced in Release 1.1.22
MGX 8850 Release 1.1.22 is a maintenance release of Release 1.1.21. In addition, it introduces the following new features:
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Features Introduced in Release 1.1.21
MGX 8850 Release 1.1.21 includes all the features in Release 1.1.12 and earlier. In addition, it introduces the following new features:
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Support for the FRSM-HS1B dual-personality back-card that can be configured for either V.35 interfaces or X.21 interfaces.
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This feature reduces switchover time for the above service modules.
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This feature supports running the T3 or E3 lines on the FRSM at sub rates. The interfaced DSU/CSU supported are the Digital Link DL3100 for T3 and the Digital Link DL3100E for E3.
Features Introduced in Release 1.1.12
MGX 8850 Release 1.1.12 was a maintenance release of Release 1.1.11. In addition, it introduced the following new features:
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Features Introduced in Release 1.1.11
MGX 8850 Release 1.1.11 was a maintenance release of Release 1.1.10. In addition, it introduced the following new features:
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The RPM has a custom ASIC on it called the ATMizer. This chip is being replaced by the ATMizer II+, AKA "G10" version of the chip. The RPM-B contains this new chip, along with a 16Mbyte Flash SIMM instead of 4Mbyte. The RPM-B can operate at 21Mhz and 42Mhz Cellbus clock rate with 1.1.11 and 12.0.5T1, while the RPM-A can only operate at 21 Mhz.
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Features Introduced in Release 1.1.10
MGX 8850 Release 1.1.10 provided the following features in addition to the ones provided in Release 1.1.01 and earlier:
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Release 1.1.27 MGX 8850 Hardware
MGX 8850 is a 45 Gbps backplane with 1.2 Gbps switching fabric for Release 1.1.27. The same backplane is used with different switching fabric cards (1.2, 45 Gbps) to achieve scalability. MGX 8850 Release 1.1.27 hardware components and their revisions that are supported are as follows:
Support for embedded Cisco IOS router (Router Processor Module - RPM)
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MGX 8220 Hardware Not Supported on Release 1.1.27 of the MGX 8850
The following cards are not supported in Release 1.1.27:
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MGX 8220 Hardware that has been superseded on the MGX 8850 by MGX 8850-specific Hardware
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The MGX-SRM-3T3-C front card replaces the original AX-SRM-3T3-A front card and the MGX-BNC-3T3 back card replaces the original AX-BNC-3T3 back card. This change allows the use of slots 9, 10, 25, and 26 for 1:n redundancy and BERT in the MGX 8850 chassis. Both the AX-SRM-3T3-A/AX-BNC-3T3 card set and the MGX-SRM-3T3-C/MGX-BNC-3T3 card set are supported on the MGX 8220.
New card should have enabled use of bulk distribution in slots 9 and 10. 1:N redundancy should have been supported in those slots with the model A card.
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Superseded by the MGX-SCSCI2-2HSSI/B, which works with the MGX-FRSM-HS2 front card. A V.35 interface is supported on the MGX-FRSM-HS1/B in this release.
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Superseded by MGX-AUSM-8T1/B and MGX-AUSM-8E1/B
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Superseded by MGX-AUSM-8T1/B and MGX-AUSM-8E1/B
MGX 8220 Hardware Not Supported on the MGX 8850
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Software Platform Features
MGX 8850 provides high speed native ATM interfaces which can be configured as ATM UNI ports or trunks
Support for 1:N and 1:1 Service Module Redundancy, as indicated in the following table:
Support for Bulk Distribution using SRM-3T3-C card.
Service module and PXM upgrades.
Features Not Supported in this Release
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Guest
