Cisco Systems Deleting Files and Managing Flash Memory on Cisco Routers
Page 48

Chapter 3 Installing the Cisco ASR 901 Mobile Wireless Router

Powering On the Router

Deleting Files from the Flash Memory

To delete a file from the flash memory, use the delete: filename command followed by the squeeze flash: command.

When a file is deleted in the Class B Flash file system, the memory space occupied by the deleted file is not released until you use the squeeze command. Although the memory space once occupied by the deleted file remains, the deleted file cannot be recovered. To release the memory space occupied by a deleted file, enter the squeeze flash: command

The following is sample output for deleting a Cisco IOS file from the flash memory, and releasing the memory space originally occupied by the file.

Router#dir

Directory of flash:/

1-rw- 30564420 <no date> ngmwr-advipservicesk9-mz

2-rw- 30564420 <no date> ngmwr-backup

83623932 bytes total (22494964 bytes free)

Router#delete ngmwr-advipservicesk9-mz

Delete filename [ngmwr-advipservicesk9-mz]?

Delete flash:ngmwr-advipservicesk9-mz? [confirm]

Router#show flash:

les_flash_info : 1006 :

System flash directory:

File Length Name/status

130564420 ngmwr-advipservicesk9-mz [deleted]

230564420 ngmwr-backup

[61128968 bytes used, 22494964 available, 83623932 total]

81920K bytes of processor board System flash (Read/Write)

Router#squeeze flash:

Squeeze operation may take a while. Continue? [confirm] squeeze in progress...

eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee eeeeeeeee

Squeeze of flash complete

Router#dir

Directory of flash:/

2-rw- 30564420 <no date> ngmwr-backup

83623932 bytes total (22661932 bytes free)

Displaying File Content

To display the contents of a file in the flash memory, use the more flash: filename command.

The following is sample output from the more flash command on a flash card:

 

Cisco ASR 901 Series Aggregation Services Router Hardware Installation Guide

3-18

OL-23778-01

Page 47 Page 49
Image 48
Page 47 Page 49
Contents Cisco Systems, Inc Page Audience Enter a Directory and Determine the Current Directory Time of Day Pinouts OL-23778-01 Document Revision History Revision Date Change SummaryObjectives AudienceOrganization ConventionsSafety Warnings Related DocumentationOL-23778-01 Introduction Hardware DescriptionCisco ASR 901 Router Front View Cisco ASR 901 Router Ethernet Version Front View Cisco ASR 901 Router-Front ViewCisco ASR 901 Router Rear View Fan Grounding Point LugPower Supply Safety PrecautionsSpecification Value LEDsPin Connector a RTNEnvironmental Monitoring Temperature Sensor System SpecificationsPin Connector B Description SpecificationRouter Interface Numbering Interface Number Location LabelRegulatory Compliance OL-23778-01 Safety Guidelines Safety with EquipmentSafety with Electricity Preventing Electrostatic Discharge Damage Power Supply Considerations PrerequisitesSite Planning Site EnvironmentMethod of Procedure Air Flow GuidelinesUnpacking and Checking the Contents of your Shipment Required Tools and EquipmentInstallation Checklist Task Verified byConsole Port Considerations Creating a Site LogConsole Port Connections Task Verified by DatePreparing to Install the Router Console Port Considerations OL-23778-01 Installing the Cisco ASR 901 Mobile Wireless Router Network ModulesRack-Mounting Configuration Guidelines Mounting the Cisco ASR 901 RouterAttaching the Rack-Mounting Brackets Mounting the Cisco ASR 901 Router in a RackAttaching the Cable Guides Rack-Mounting Brackets section onConnecting the Chassis Ground and Power Grounding the Cisco ASR 901 RouterGrounding Point Power Connection Compliance Stripping a Ground WireWiring the DC-Input Power Source 6-Pin Terminal BlockInstalling and Removing SFP Modules Installing SFP ModulesInstalling an SFP Module into an SFP Module Slot Removing SFP ModulesConnecting Cables Connecting the Console PortTypes of RJ-45 Cables Console PortConnecting the Network Cables Connecting Gigabit Ethernet Interface CablesConnecting T1 and E1 Interface Cables Connecting SFP Cables Connecting Cables to the Bits InterfaceConnecting GPS Cables Powering On the Router Connecting to Alarm PortConnecting to the Management Ethernet Port Dressing Router CablesChecklist for Power Up Power-On ProcedureFormatting Procedures for Flash Memory Interpreting Front-Panel LEDsFile and Directory Procedures Displaying Contents of the Flash MemoryCopying Files Displaying File Content Deleting Files from the Flash MemoryWhat to Do After Installing the Hardware Enter a Directory and Determine the Current DirectoryOL-23778-01 Troubleshooting Problem SolvingTroubleshooting the Power and Cooling Systems Environmental Reporting FeaturesSymptom Possible Cause Corrective Action Troubleshooting Cables, and Connections Information Packet publicationReading the LEDs Chassis LEDsCopper GE from Quad combo PHY ports contain Two Leds each System LEDT1/E1 Interface LEDs SFP Ethernet Interface LEDsRJ-45 Ethernet Interface LEDs Color/State Description two LEDs for each T1/E1 portOL-23778-01 Cable Specifications Gigabit Ethernet Connector PinoutsSFP Port Pinouts and Cable Specifications Pin FE Signal GE SignalT1/E1 Port Pinouts Console Port Signals and Pinouts Console Port Signals and PinoutsPin Signal Name Direction Description Pin Signal Name HP Pins Direction Description RJ-45-to-DB-9 Terminal Adapter ConsoleTerminal Adapter Device Signal RJ-45 Pin DB-25 Pin Identifying a Rollover CableConsole RJ-45-to-DB-25 Port DTE Bits Port Pinouts Time of Day PinoutsGPS Port Pinouts Alarm Port Pinouts Pin Signal Name DescriptionManagement Ethernet Port Pinouts 10 MhzRxDP RxDN TxDP Not connected TxDN Site Log Date InitialsNumerics IN-2 IN-3 IN-4

ASR 901 specifications

Cisco Systems ASR 901 is an advanced aggregation services router that is designed to meet the needs of service providers and enterprise networks. It offers a versatile platform suitable for various deployment scenarios ranging from mobile backhaul and broadband aggregation to IP edge routing. The ASR 901 is known for its compact size, energy efficiency, and robust performance, making it a preferred choice for operators looking to enhance their network infrastructure.

One of the main features of the Cisco ASR 901 is its small form factor, which facilitates installation in space-constrained environments. Its design allows for easy deployment in both indoor and outdoor settings, making it ideal for applications such as cell site backhaul and remote locations. The router supports a wide range of interfaces, including Ethernet and T1/E1, providing flexibility in connecting different network types.

The ASR 901 is built on Cisco's IOS XR software, ensuring a highly reliable and secure operating environment. This software is known for its scalability and robustness, providing operators with the ability to support large numbers of subscribers and high traffic volumes. The router also supports system redundancy features, ensuring continuous service availability and minimizing downtime.

In terms of performance, the Cisco ASR 901 delivers high throughput and low latency, which are crucial for delivering quality services like voice, video, and data. With its support for advanced network technologies such as MPLS and IPv6, the ASR 901 can effectively manage complex networking requirements while accommodating future growth.

Security is also a key consideration with the ASR 901. It includes features such as advanced encryption, access control lists, and intrusion prevention systems, aimed at protecting the integrity of network communications. Moreover, its support for Virtual LAN (VLAN) tagging and Quality of Service (QoS) mechanisms allows for efficient traffic management and prioritization, ensuring that critical applications receive the necessary bandwidth.

Furthermore, Cisco provides comprehensive management tools for the ASR 901, allowing network administrators to easily monitor and configure the router. Features like SNMP and NetFlow enable operators to gain insights into network performance and usage patterns, facilitating proactive management of their environments.

Overall, the Cisco Systems ASR 901 stands out as a powerful and flexible router, designed to meet the evolving demands of modern networks. Its combination of compact design, scalability, and advanced features positions it as an ideal solution for service providers and enterprises seeking reliable and efficient network solutions.
Top Page Image Contents