Manuale d’uso / di manutenzione del prodotto IOS XR del fabbricante Cisco Systems
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CH A P T E R 3-1 Cisco I OS XR Ge tting S tarted Gu ide 3 Configuring Additional Router Features This chapter contains instructio ns and information for enteri ng basic conf igurations usin g the command-line interface (CLI).
3-2 Cisco IOS XR Getting Started Guide Chapter 3 Configuring Add itional Router Featur es Configuring Telnet, HTTP, an d XML Host Services T o conf igure the DN S and DNS server , complete the following steps: SUMMARY STEPS 1. conf igure 2. domain name domain-name-of-or ganization 3.
3-3 Cisco I OS XR Ge tting S tarted Gu ide Chapter 3 Configuri ng Additional Router Features Managing Configuration Histor y and Rollback Prerequisites The follo wing prerequisites must be met before .
3-4 Cisco IOS XR Getting Started Guide Chapter 3 Configuring Add itional Router Featur es Managing Configuration History and Rollbac k When multiple commit IDs are present, you can use a comm itID to .
3-5 Cisco I OS XR Ge tting S tarted Gu ide Chapter 3 Configuri ng Additional Router Features Managing Configuration Histor y and Rollback The commitIDs are sho wn in the “Label/ID” co lumn. The follo w ing examp le sho ws the show conf iguration commit list command display: RP/0/RP0/CPU0:router# show configuration commit list SNo.
3-6 Cisco IOS XR Getting Started Guide Chapter 3 Configuring Add itional Router Featur es Managing Configuration History and Rollbac k RP/0/RP0/CPU0:router# show configuration commit history SNo.
3-7 Cisco I OS XR Ge tting S tarted Gu ide Chapter 3 Configuri ng Additional Router Features Managing Configuration Histor y and Rollback T o di splay the prospect i ve rollback con figur ation change.
3-8 Cisco IOS XR Getting Started Guide Chapter 3 Configuring Add itional Router Featur es Managing Configuration History and Rollbac k Ti p T o pre vie w the commands that undo the config uration during a r ollback, use the sho w conf iguration rollback changes command.
3-9 Cisco I OS XR Ge tting S tarted Gu ide Chapter 3 Configuri ng Additional Router Features Saving and Loading Targ et Configuration Files T o load rollback conf ig uration changes from the current c.
3-10 Cisco IOS XR Getting Started Guide Chapter 3 Configuring Add itional Router Featur es Saving and Loading Tar get Configuration Files Saving the Target Configuration to a File T o sa ve the configuration changes in the tar get confi guration to a f ile, enter the show conf iguration | f ile f ilename command.
3-11 Cisco I OS XR Ge tting S tarted Gu ide Chapter 3 Configuri ng Additional Router Features Configuring Logging and Logging Correlation Configuring Logging and Logging Correlation System messages generated b y the Cisco IOS XR softwa re can be logged to a v ariety of locations b ased on the se verity le vel o f the messages.
3-12 Cisco IOS XR Getting Started Guide Chapter 3 Configuring Add itional Router Featur es Configuring Logg ing and Logging Correlation For e xample, the original message descr ibing a card online ins.
3-13 Cisco I OS XR Ge tting S tarted Gu ide Chapter 3 Configuri ng Additional Router Features Configuring Logging and Logging Correlation Examples In the follo wing example, basic m essage logging is conf igured: RP/0/RP0/CPU0:router# config RP/0/RP0/CPU0:router(config)# logging 10.
3-14 Cisco IOS XR Getting Started Guide Chapter 3 Configuring Add itional Router Featur es Creating and M odifying User Accou nts and User Groups RP/0/RP0/CPU0:Apr 6 21:30:59.515 : alphadisplay[103][317]: alpha_display_drain_ queue: Draining 1 message from the queue of size = 1 RP/0/RP0/CPU0:Apr 6 21:31:03.
3-15 Cisco I OS XR Ge tting S tarted Gu ide Chapter 3 Configuri ng Additional Router Features Creating and Modifying User Accou nts and User Groups Displaying Details About User Accounts, User Groups, and Task IDs Ta b l e 3 - 3 summarizes the EXEC mode commands used to display details about user accounts, user groups, and task IDs.
3-16 Cisco IOS XR Getting Started Guide Chapter 3 Configuring Add itional Router Featur es Creating and M odifying User Accou nts and User Groups Creating Users and Assigning Groups T o cr eate a user , assign a password, and assign the user to a g roup, perform the foll owing procedure: SUMMARY STEPS 1.
3-17 Cisco I OS XR Ge tting S tarted Gu ide Chapter 3 Configuri ng Additional Router Features Configuration Limiting Related Documents For more inf ormation on conf iguration an d management of users .
3-18 Cisco IOS XR Getting Started Guide Chapter 3 Configuring Add itional Router Featur es Configuration Limiting The follo wing sections d escribe the limits you can conf igure, default and maximum v.
3-19 Cisco I OS XR Ge tting S tarted Gu ide Chapter 3 Configuri ng Additional Router Features Configuration Limiting IS-IS Configuration Limits Ta b l e 3 - 5 summarizes the maximum limits for IS-IS, includi ng the commands used to display and change the limits.
3-20 Cisco IOS XR Getting Started Guide Chapter 3 Configuring Add itional Router Featur es Configuration Limiting T able 3-6 OSPFv2 and OSPFv3 Configu ration Limi ts and Commands Examples The follo wi.
3-21 Cisco I OS XR Ge tting S tarted Gu ide Chapter 3 Configuri ng Additional Router Features Configuration Limiting Maximum Interfaces for Each OSPF Instance In the following e xample, the show ospf command is used to display the maximum number of OSPF interfaces: RP/0/RP1/CPU0:router# show ospf Routing Process "ospf 100" with ID 0.
3-22 Cisco IOS XR Getting Started Guide Chapter 3 Configuring Add itional Router Featur es Configuration Limiting Maximum Routes Redistributed int o OSPF In the follo wing ex ample, the maximum redist.
3-23 Cisco I OS XR Ge tting S tarted Gu ide Chapter 3 Configuri ng Additional Router Features Configuration Limiting IPv4 multicast maximum pref ixes that can be recei ve d from a neighbor 131,072 4,2.
3-24 Cisco IOS XR Getting Started Guide Chapter 3 Configuring Add itional Router Featur es Configuration Limiting A cease-notification message is sent to the neighbo r and the peering with the neighb .
3-25 Cisco I OS XR Ge tting S tarted Gu ide Chapter 3 Configuri ng Additional Router Features Configuration Limiting Examples In the following e xample, the show rpl maximum command is used in EXEC mode to di splay the current setting for RPL limits and nu mber of each limit currently in use.
3-26 Cisco IOS XR Getting Started Guide Chapter 3 Configuring Add itional Router Featur es Configuration Limiting Multicast Configuration Limits Ta b l e 3 - 9 summarizes the maximum limits for multicast conf iguration, including the co mmands used to display and change the li mits.
3-27 Cisco I OS XR Ge tting S tarted Gu ide Chapter 3 Configuri ng Additional Router Features Configuration Limiting MPLS Configuration Limits Ta b l e 3 - 1 0 summarizes the maximum limits for MPLS conf iguration, including t he commands used to display and change the limits.
3-28 Cisco IOS XR Getting Started Guide Chapter 3 Configuring Add itional Router Featur es Configuration Limiting.
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 IOS XR 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 IOS XR - in questo modo è possibile verificare se l’apparecchio soddisfa le tue esigenze. Esplorando le pagine segenti del manuali d’uso Cisco Systems IOS XR imparerai tutte le caratteristiche del prodotto e le informazioni sul suo funzionamento. Le informazioni sul Cisco Systems IOS XR ti aiuteranno sicuramente a prendere una decisione relativa all’acquisto.
In una situazione in cui hai già il Cisco Systems IOS XR, 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 IOS XR.
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 IOS XR. Quasi sempre, ci troverai Troubleshooting, cioè i guasti più frequenti e malfunzionamenti del dispositivo Cisco Systems IOS XR 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.
