Manuale d’uso / di manutenzione del prodotto IGX 8400 del fabbricante Cisco Systems
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CHAPTER Trunk Cards 4-1 4 T r unk Cards This chapter describes the hardware and functionality of IGX trunk cards. The description of each card includes: • Function • System interconnect • Facepl.
4-2 Cisco IGX 8400 Series Reference Trunk Interface Cards T runk Interface Car ds This section describes the IGX trunks. The card groups are: • Uni versal switching module enhanced (UXM-E) • Network trunk module (NTM) Note W ith Release 9.2 and later software, an Cisco IGX 8420 or 8430 switch can support a maximum of 32 trunks.
Trunk Cards 4-3 Common Alarms, Controls, and Indicators T runk Operating Modes IGX trunk cards operate in either simple gateway or cell forwar ding mode. Simple gate way supports service interworking , which lets Frame Relay connections terminate at A TM endpoints.
4-4 Cisco IGX 8400 Series Reference Universal Switching Module Enhanced Universal Switc hing Module Enhanced This description of the univ ersal switching module (UXM-E) cov ers the following topics: .
Trunk Cards 4-5 Universal Switching Module Enhanced Deter mining the UXM-E’ s Mode of Operation The UXM-E detects reports its mode of operation to switch software when you first acti vate either a trunk to the network or a line on the UNI or NNI. If you acti vate a trunk, the UXM-E goes into trunk mode.
4-6 Cisco IGX 8400 Series Reference Universal Switching Module Enhanced voice connection between a CVM and CDP . Connection E is a local connection (D AXCON) between a UFM and a UXM-E UNI port on the same node. For connections C–E, the gate way function of the UXM-E packs and unpacks the FastP ackets into and out of the A TM cells.
Trunk Cards 4-7 Universal Switching Module Enhanced • The maximum throughput is 310 Mbps—two times the OC-3 (STM1) rate. This maximum applies whether the back card is a 2-port or 4-port back card. In practical application, this maximum rate means that most trunk applications with an OC-3 interface would use the 2-port back card.
4-8 Cisco IGX 8400 Series Reference Universal Switching Module Enhanced Figure 4-3 UXM-E Front Car d 29424 UXME Fail Active Minor Standby Major.
Trunk Cards 4-9 Universal Switching Module Enhanced T able 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 maximum number of UNI or NNI ports in an IGX switch is 64. The maximum number of logical trunks is 32.
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 cards occurs when you connect an unsupported back card to the front card.
Trunk Cards 4-11 Universal Switching Module Enhanced The car d-based default and maximum cellb us bandwidth for each interface appears in T able 4-5. Note that FastP ackets require substantially less cellbus bandwidth than A TM cells.
4-12 Cisco IGX 8400 Series Reference Universal Switching Module Enhanced Calculating Cellbus Bandwidth Changes T o determine ho w many UBUs are necessary , use the values for avera ge bandwidth used in the following formula: In most circumstances, the fps and cps values from aver age bandwidth used are suf ficient.
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.
4-14 Cisco IGX 8400 Series Reference Universal Switching Module Enhanced T ypes of Connections on a UXM-E T r unk This section introduces the connections that a UXM-E trunk supports. The context of each description is the trunk rather than the connection endpoints.
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.
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 W AN Manager or the cnftrk command, you enter the number of retained links. This represents the number of ports that must remain activ e for the IMA trunk itself to remain activ e.
Trunk Cards 4-17 Universal Switching Module Enhanced Figure 4-7 shows an e xample of IMA protocol overhead. In the e xample, DS0 1 is reserved for an IMA group with 1 to 4 physical lines and DS0 2 is reserved for an IMA group with 5 to 8 physical lines.
4-18 Cisco IGX 8400 Series Reference Universal Switching Module Enhanced Note T wo-segment v oice and data connections are not supported. Figure 4-9 shows an e xample of configuring a three-segment connection for IGX feeder node functionality .
Trunk Cards 4-19 Universal Switching Module Enhanced Activ ation and Configuration of a UXM-E in T r unk Mode When you insert a ne w UXM-E into the backplane or apply power to the IGX node, UXM-E firmware reports the card type and number of physical lines on the back card.
4-20 Cisco IGX 8400 Series Reference Universal Switching Module Enhanced T1 • HCS masking (on or off) • Payload scramble (on or of f) • Loop clock (enable/disable) • Line framing (ESF or D4) .
Trunk Cards 4-21 Universal Switching Module Enhanced Alar ms f or Ph ysical Lines and Logical T runks V ariations exist in the way switch software supports alarms for physical lines and logical trunks for a trunk-mode UXM-E.
4-22 Cisco IGX 8400 Series Reference Universal Switching Module Enhanced Figure 4-10 shows an application e xample enabled by the PCR minimum value feature.
Trunk Cards 4-23 UXM-E Interface Cards Summar y Statistics Y ou can view summary statistics for a UXM-E trunk through Cisco W AN Manager or the CLI. The CLI commands are dspportstats and dsptrkstats .
4-24 Cisco IGX 8400 Series Reference UXM-E Interface Cards • BC-U AI-4-E1-BNC OC-3/STM1 Back Cards The OC3/STM1 back cards for the UXM-E hav e the single-mode fiber (SMF), multimode fiber (MMF) and electrical connections.
Trunk Cards 4-25 UXM-E Interface Cards Figure 4-11 BC-U AI-4-155-SMF Faceplate UAI - 4-15 5 SMF FAIL ACTIVE R X T X P O R T 1 P O R T 2 P O R T 3 P O R T 4 R LOC Y REM G OK R X T X R LOC Y REM G OK R .
4-26 Cisco IGX 8400 Series Reference UXM-E Interface Cards Figure 4-12 BC-U AI-2-155-SMF Faceplate T3 Back Cards The T3 back cards for the UXM-E are BC-U AI-6-T3 and BC-U AI-3-T3. These cards hav e six and three pairs of BNC connectors, respecti vely .
Trunk Cards 4-27 UXM-E Interface Cards T able 4-13 Connector s and LEDs for BC-U AI-6-T3 and BC-UAI-3-T3 Figure 4-13 BC-U AI-6-T3 Faceplate Connectors/Indicator Function T ransmit jacks BNC connectors for transmit data. Receiv e jacks BNC connectors for receiv e data.
4-28 Cisco IGX 8400 Series Reference UXM-E Interface Cards Figure 4-14 BC-U AI-3-T3 Faceplate E3 Back Cards The E3 back cards for the UXM-E are the six-port BC-U AI-6-E3 and the three-port BC-U AI-3-E3. These cards hav e six and three pairs of SMB connectors, respectiv ely .
Trunk Cards 4-29 UXM-E Interface Cards T able 4-14 Connector s and LEDs for BC-U AI-6-E3 and BC-UAI-3-E3 Figure 4-15 BC-U AI-6-E3 Faceplate Connector/Indicator Function T ransmit Jack BNC connector for transmit data. Receiv e Jack BNC connector for receiv e data.
4-30 Cisco IGX 8400 Series Reference UXM-E Interface Cards Figure 4-16 BC-U AI-3-E3 Faceplate T1 Back Cards The T1 back cards for the UXM-E are BC-U AI-8-T1-DB-15 and BC-U AI-4-T1-DB-15. These cards hav e eight and four DB-15 lines, respectiv ely . Each line has a tri-color LED whose color indicates its status.
Trunk Cards 4-31 UXM-E Interface Cards T able 4-15 Connector s and LEDs for BC-U AI-8-T1-DB-15 and BC-UAI-4-T1-DB-15 Figure 4-17 BC-U AI-8-T1-DB-15 Faceplate Connector/Indicator Function Four or eight DB-15s Each DB-15 connector carries transmit and recei ve data.
4-32 Cisco IGX 8400 Series Reference UXM-E Interface Cards Figure 4-18 BC-U AI-4-T1-DB-15 Faceplate E1 Back Cards The E1 back cards for the UXM-E are: • BC-U AI-8-E1-BNC • BC-U AI-8-E1-DB-15 • BC-U AI-4-E1-BNC • BC-U AI-4-E1-DB-15 As the model numbers indicate, the eight and four-port E1 cards can ha ve either BNC or DB-15 connectors.
Trunk Cards 4-33 UXM-E Interface Cards T able 4-16 Connector s and LEDs for BC-U AI-8-E1 and BC-UAI-4-E1 Figure 4-19 BC-U AI-8-E1 DB-15 Faceplate Connector/Indicator Function Eight or four DB-15 connectors Each DB-15 connector carries transmit and receive data.
4-34 Cisco IGX 8400 Series Reference UXM-E Interface Cards Figure 4-20 BC-U AI-8-E1 BNC Faceplate UAI-8EI BNC H1 1705 RX R LOC Y REM G OK TX P ORT 1 RX R LOC Y REM G OK TX P ORT 2 RX R LOC Y REM G OK .
Trunk Cards 4-35 UXM-E Interface Cards Figure 4-21 BC-U AI-4-E1 DB-15 Faceplate UAI -4E1 DB15 P O R T 1 R LOC Y REM G OK P O R T 2 R LOC Y REM G OK P O R T 3 R LOC Y REM G OK P O R T 4 R LOC Y REM G O.
4-36 Cisco IGX 8400 Series Reference UXM-E Interface Cards Figure 4-22 BC-U AI-4-E1 BNC Faceplate UAI-4EI BNC H1 1708 RX R LOC Y REM G OK TX P ORT 1 RX R LOC Y REM G OK TX P ORT 2 RX R LOC Y REM G OK .
Trunk Cards 4-37 Network Trunk Module Netw ork T runk Module The network trunk module (NTM) enables FastP acket transmission on a trunk. NTM functions include the follo wing: • T akes FastP ackets o.
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 follo ws. T o view errors on a trunk, use the dsptrkerrs command.
Trunk Cards 4-39 Network Trunk Module Figure 4-23 BC-T1 Faceplate T able 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.
4-40 Cisco IGX 8400 Series Reference Network Trunk Module E1 Interf ace Bac k Card (BC-E1) The E1 trunk interface card (BC-E1) provides an E1 trunk interf ace for the network trunk module (NTM).
Trunk Cards 4-41 Network Trunk Module Figure 4-24 BC-E1 Faceplate T able 4-18 BC-E1 Connections and Status LEDs Connector/Indicator Function RX-TX Female DB-15 connector for XMT and RCV E1. RX BNC connector for receiv e E1 line. TX BNC connector for transmit E1 line.
4-42 Cisco IGX 8400 Series Reference Network Trunk Module Subrate Interf ace Card (BC-SR) The back card/subrate (BC-SR) terminates subrate trunks on the NTM. A subrate trunk uses part of the E1 or T1 bandwidth. The BC-SR typically functions in tail circuits or where little traffic e xists.
Trunk Cards 4-43 Network Trunk Module Figure 4-25 BC-SR Faceplate T able 4-19 BC-SR Connections and Status LEDs Connection/Indicator Function EIA/TIA-449 data connector DB-37 female connector X.
4-44 Cisco IGX 8400 Series Reference Network Trunk Module T able 4-20 Data and Contr ol Leads Supported with BC-SR Y1 Interf ace Bac k Card (BC-Y1) The BC-Y1 back card provides a Japanese Y1 trunk interface for an NTM.
Trunk Cards 4-45 Network Trunk Module Figure 4-26 BC-Y1 Faceplate T able 4-21 BC-Y1 Connections and Status LEDs Connector/Indicator Function Y1 T runk input/output DB-15 connector for Y1 trunk Line in.
4-46 Cisco IGX 8400 Series Reference Network Trunk Module.
Un punto importante, dopo l’acquisto del dispositivo (o anche prima di acquisto) è quello di leggere il manuale. Dobbiamo farlo per diversi motivi semplici:
Se non hai ancora comprato il Cisco Systems IGX 8400 è un buon momento per familiarizzare con i dati di base del prodotto. Prime consultare le pagine iniziali del manuale d’uso, che si trova al di sopra. Dovresti trovare lì i dati tecnici più importanti del Cisco Systems IGX 8400 - in questo modo è possibile verificare se l’apparecchio soddisfa le tue esigenze. Esplorando le pagine segenti del manuali d’uso Cisco Systems IGX 8400 imparerai tutte le caratteristiche del prodotto e le informazioni sul suo funzionamento. Le informazioni sul Cisco Systems IGX 8400 ti aiuteranno sicuramente a prendere una decisione relativa all’acquisto.
In una situazione in cui hai già il Cisco Systems IGX 8400, ma non hai ancora letto il manuale d’uso, dovresti farlo per le ragioni sopra descritte. Saprai quindi se hai correttamente usato le funzioni disponibili, e se hai commesso errori che possono ridurre la durata di vita del Cisco Systems IGX 8400.
Tuttavia, uno dei ruoli più importanti per l’utente svolti dal manuale d’uso è quello di aiutare a risolvere i problemi con il Cisco Systems IGX 8400. Quasi sempre, ci troverai Troubleshooting, cioè i guasti più frequenti e malfunzionamenti del dispositivo Cisco Systems IGX 8400 insieme con le istruzioni su come risolverli. Anche se non si riesci a risolvere il problema, il manuale d’uso ti mostrerà il percorso di ulteriori procedimenti – il contatto con il centro servizio clienti o il servizio più vicino.
