Page 2 - Trunk Interface Cards; This section describes the IGX trunks. The card groups are:
4-2 Cisco IGX 8400 Series Reference Trunk Interface Cards Trunk Interface Cards This section describes the IGX trunks. The card groups are: • Universal switching module enhanced (UXM-E) • Network trunk module (NTM) Note With Release 9.2 and later software, an Cisco IGX 8420 or 8430 switch can suppor...
Page 3 - Note
Trunk Cards 4-3 Common Alarms, Controls, and Indicators Trunk Operating Modes IGX trunk cards operate in either simple gateway or cell forwarding mode. Simple gateway supportsservice interworking, which lets Frame Relay connections terminate at ATM endpoints. For adescription of simple and complex g...
Page 4 - Universal Switching Module Enhanced; Supported traffic and connection types; Introduction to the UXM-E Trunk Mode
4-4 Cisco IGX 8400 Series Reference Universal Switching Module Enhanced Universal Switching Module Enhanced This description of the universal switching module (UXM-E) covers the following topics: • An introduction includes sections on the UXM-E mode of operation, trunk-mode features,interface card l...
Page 5 - Determining the UXM-E’s Mode of Operation; UXM-Es in a Network with Pure ATM Traffic
Trunk Cards 4-5 Universal Switching Module Enhanced Determining the UXM-E’s Mode of Operation The UXM-E detects reports its mode of operation to switch software when you first activate eithera trunk to the network or a line on the UNI or NNI. If you activate a trunk, the UXM-E goes intotrunk mode. I...
Page 6 - The UXM-E uses all four lanes of the cellbus.
4-6 Cisco IGX 8400 Series Reference Universal Switching Module Enhanced voice connection between a CVM and CDP. Connection E is a local connection (DAXCON)between a UFM and a UXM-E UNI port on the same node. For connections C–E, the gatewayfunction of the UXM-E packs and unpacks the FastPackets into...
Page 7 - The front card has 128K cell buffers.; Back Cards for the UXM-E
Trunk Cards 4-7 Universal Switching Module Enhanced • The maximum throughput is 310 Mbps—two times the OC-3 (STM1) rate. This maximumapplies whether the back card is a 2-port or 4-port back card. In practical application, thismaximum rate means that most trunk applications with an OC-3 interface wou...
Page 9 - Maximum Number of UXM-Es; trunks per card x 16 OC3 UXM-Es = 32 trunks; Switchover to a Redundant UXM-E; Fail
Trunk Cards 4-9 Universal Switching Module Enhanced Table 4-5 UXM-E Status LEDs Maximum Number of UXM-Es Switch software limits the number of logical trunks and ports on an IGX switch. The maximumnumber of UNI or NNI ports in an IGX switch is 64. The maximum number of logical trunks is 32.To determi...
Page 10 - Card Mismatch; Cellbus Bandwidth Usage; FastPackets on lane 1
4-10 Cisco IGX 8400 Series Reference Universal Switching Module Enhanced Card Mismatch The UXM-E supports two types of card mismatch notification. The notification common to all cardsoccurs when you connect an unsupported back card to the front card. The mismatch notificationunique to the UXM-E occu...
Page 11 - Average Used Bandwidth is the average bandwidth usage.; Cellbus Bandwidth Allocation for UXM-E Interfaces; Planning for Cellbus Bandwidth Allocation; Ports
Trunk Cards 4-11 Universal Switching Module Enhanced The card-based default and maximum cellbus bandwidth for each interface appears in Table 4-5.Note that FastPackets require substantially less cellbus bandwidth than ATM cells. The FastPacketrequirements in the figure and table reflect the restrict...
Page 12 - Calculating Cellbus Bandwidth Changes; UXM-Es Configured for a Public ATM Network; The node number at each endpoint must be 17 or higher.; U B U s
4-12 Cisco IGX 8400 Series Reference Universal Switching Module Enhanced Calculating Cellbus Bandwidth Changes To determine how many UBUs are necessary, use the values for average bandwidth used in thefollowing formula: In most circumstances, the fps and cps values from average bandwidth used are su...
Page 13 - and the public network; Routing over Cell Trunks Only; The UXM-E in Trunk Mode; BXM; Types of Supported Traffic; Traffic from FastPacket-Based Cards; Timestamped
Trunk Cards 4-13 Universal Switching Module Enhanced • 8.3 and 9.3 • 9.4 and the public network Step 2 Configure trunk 8.1, 8.2, and 8.3 to use VPC 101, 102, and 103, respectively. Step 3 Add 3 VPC connections from 9.1, 9.2, and 9.3 to 9.4. At the far end, use the same VPCs. Routing over Cell Trunks...
Page 14 - Types of Connections on a UXM-E Trunk
4-14 Cisco IGX 8400 Series Reference Universal Switching Module Enhanced Types of Connections on a UXM-E Trunk This section introduces the connections that a UXM-E trunk supports. The context of eachdescription is the trunk rather than the connection endpoints. The purpose of these descriptions isno...
Page 15 - IMA characteristics are as follows:; Sample IGX Feeder Topology; IMA cloud
Trunk Cards 4-15 Universal Switching Module Enhanced IMA characteristics are as follows: • All physical ports of an IMA trunk use the same line configuration. • The node maintains a set of retained links for the IMA trunk to keep it active. The IMA trunkdoes not fail unless the number of active trun...
Page 16 - Adding and Removing IMA Group Links; Line Redundancy
4-16 Cisco IGX 8400 Series Reference Universal Switching Module Enhanced Adding and Removing IMA Group Links When you configure an IMA trunk through Cisco WAN Manager or the cnftrk command, you enterthe number of retained links. This represents the number of ports that must remain active for the IMA...
Page 17 - Supported Segment Connections on the IGX Feeder Node; Routing
Trunk Cards 4-17 Universal Switching Module Enhanced Figure 4-7 shows an example of IMA protocol overhead. In the example, DS0 1 is reserved for anIMA group with 1 to 4 physical lines and DS0 2 is reserved for an IMA group with 5 to 8 physicallines. Figure 4-7 IMA Protocol Supported Segment Connecti...
Page 18 - Two-segment voice and data connections are not supported.
4-18 Cisco IGX 8400 Series Reference Universal Switching Module Enhanced Note Two-segment voice and data connections are not supported. Figure 4-9 shows an example of configuring a three-segment connection for IGX feeder nodefunctionality. Figure 4-9 Sample Three-Segment Connections Table 4-9 lists ...
Page 19 - Activation and Configuration of a UXM-E in Trunk Mode
Trunk Cards 4-19 Universal Switching Module Enhanced Activation and Configuration of a UXM-E in Trunk Mode When you insert a new UXM-E into the backplane or apply power to the IGX node, UXM-Efirmware reports the card type and number of physical lines on the back card. Switch software canthen determi...
Page 20 - • Idle code
4-20 Cisco IGX 8400 Series Reference Universal Switching Module Enhanced T1 • HCS masking (on or off) • Payload scramble (on or off) • Loop clock (enable/disable) • Line framing (ESF or D4) • Cable length (0 to 655 feet, ABAM cable only) • Idle code • Line coding (fixed as B8ZS) E1 • HCS masking (on...
Page 21 - Alarms for Physical Lines and Logical Trunks; A UXM-E trunk is mapped to a physical line object.; SCR and PCR Policing at Less than 50 CPS on UXM-E; The policing accuracy is always within 1%.
Trunk Cards 4-21 Universal Switching Module Enhanced Alarms for Physical Lines and Logical Trunks Variations exist in the way switch software supports alarms for physical lines and logical trunks fora trunk-mode UXM-E. The following list summarizes the approach to physical lines and trunks: • A UXM-...
Page 22 - Trunk Statistics for Troubleshooting
4-22 Cisco IGX 8400 Series Reference Universal Switching Module Enhanced Figure 4-10 shows an application example enabled by the PCR minimum value feature. In theexample, less than 19.2 kbps Frame and ATM connections are set up across two carrier Frame andATM networks with the policing function enab...
Page 23 - Summary Statistics; Port statistics; UXM-E Interface Cards
Trunk Cards 4-23 UXM-E Interface Cards Summary Statistics You can view summary statistics for a UXM-E trunk through Cisco WAN Manager or the CLI. TheCLI commands are dspportstats and dsptrkstats. With dspportstats, you can view: • Port statistics • IMA statistics • ILMI/ILMI statistics With dsptrkst...
Page 26 - T3 Back Cards
4-26 Cisco IGX 8400 Series Reference UXM-E Interface Cards Figure 4-12 BC-UAI-2-155-SMF Faceplate T3 Back Cards The T3 back cards for the UXM-E are BC-UAI-6-T3 and BC-UAI-3-T3. These cards have six andthree pairs of BNC connectors, respectively. Each port has a tri-color LED whose color indicates it...
Page 27 - TX
Trunk Cards 4-27 UXM-E Interface Cards Table 4-13 Connectors and LEDs for BC-UAI-6-T3 and BC-UAI-3-T3 Figure 4-13 BC-UAI-6-T3 Faceplate Connectors/Indicator Function Transmit jacks BNC connectors for transmit data. Receive jacks BNC connectors for receive data. Red (on the tri-color LED) On indicate...
Page 28 - E3 Back Cards
4-28 Cisco IGX 8400 Series Reference UXM-E Interface Cards Figure 4-14 BC-UAI-3-T3 Faceplate E3 Back Cards The E3 back cards for the UXM-E are the six-port BC-UAI-6-E3 and the three-port BC-UAI-3-E3.These cards have six and three pairs of SMB connectors, respectively. Each line has a tri-color LEDwh...
Page 30 - T1 Back Cards
4-30 Cisco IGX 8400 Series Reference UXM-E Interface Cards Figure 4-16 BC-UAI-3-E3 Faceplate T1 Back Cards The T1 back cards for the UXM-E are BC-UAI-8-T1-DB-15 and BC-UAI-4-T1-DB-15. These cardshave eight and four DB-15 lines, respectively. Each line has a tri-color LED whose color indicatesits sta...
Page 31 - Each DB-15 connector carries transmit and receive data.
Trunk Cards 4-31 UXM-E Interface Cards Table 4-15 Connectors and LEDs for BC-UAI-8-T1-DB-15 and BC-UAI-4-T1-DB-15 Figure 4-17 BC-UAI-8-T1-DB-15 Faceplate Connector/Indicator Function Four or eight DB-15s Each DB-15 connector carries transmit and receive data. Red (on the tri-color LED) On indicates ...
Page 32 - E1 Back Cards
4-32 Cisco IGX 8400 Series Reference UXM-E Interface Cards Figure 4-18 BC-UAI-4-T1-DB-15 Faceplate E1 Back Cards The E1 back cards for the UXM-E are: • BC-UAI-8-E1-BNC • BC-UAI-8-E1-DB-15 • BC-UAI-4-E1-BNC • BC-UAI-4-E1-DB-15 As the model numbers indicate, the eight and four-port E1 cards can have e...
Page 34 - RX
4-34 Cisco IGX 8400 Series Reference UXM-E Interface Cards Figure 4-20 BC-UAI-8-E1 BNC Faceplate UAI-8EI BNC H1 1705 RX R LOCY REMG OK TX PORT 1 RX R LOCY REMG OK TX PORT 2 RX R LOCY REMG OK TX PORT 3 RX R LOCY REMG OK TX PORT 4 RX R LOCY REMG OK TX PORT 5 RX R LOCY REMG OK TX PORT 6 RX R LOCY REMG ...
Page 37 - Network Trunk Module; Arbitrates access to the trunk for the traffic type; Y-Cable Redundancy for the NTM; The red Fail LED indicates an NTM card failure was detected.
Trunk Cards 4-37 Network Trunk Module Network Trunk Module The network trunk module (NTM) enables FastPacket transmission on a trunk. NTM functionsinclude the following: • Takes FastPackets off the cellbus and places them in queues before transmission to the trunk • Arbitrates access to the trunk fo...
Page 38 - BC-T1 Faceplate Description
4-38 Cisco IGX 8400 Series Reference Network Trunk Module For details on the significance of LEDs, see the Cisco IGX 8400 Series Installation manual. The alarms and line conditions that the NTM monitors include those in the list that follows. To viewerrors on a trunk, use the dsptrkerrs command. To ...
Page 39 - Indicates loss of signal at the local end.
Trunk Cards 4-39 Network Trunk Module Figure 4-23 BC-T1 Faceplate Table 4-17 BC-T1 Connections and Status LEDs Connector/Indicator Function T1 input/output Female DB-15 connector for T1 line. LOS light (red) Indicates loss of signal at the local end. Red alarm light (red) Indicates loss of local E1 ...
Page 42 - Trunk line interfaces to subrate trunks
4-42 Cisco IGX 8400 Series Reference Network Trunk Module Subrate Interface Card (BC-SR) The back card/subrate (BC-SR) terminates subrate trunks on the NTM. A subrate trunk uses part ofthe E1 or T1 bandwidth. The BC-SR typically functions in tail circuits or where little traffic exists. A subrate tr...
