Description
Network Segmentation and Access Control
Network segmentation is the process of dividing a large network into smaller, more manageable subnets, each with its own set of security policies and access controls. This allows for more granular control over network access and can help to improve security by isolating different parts of the network from one another.
The Cisco 3925 Application Experience-Router is a modular router that can be configured to support network segmentation and access control through the use of virtual routing and forwarding (VRF) and access control lists (ACLs). VRFs allow for the creation of multiple routing tables within the same router, which can be used to segment the network into different subnets with their own security policies.
ACLs can be used to define which traffic is allowed or denied access to specific segments of the network. They allow network administrators to set up specific rules that determine which devices and users are able to access certain parts of the network, and which are not. The Cisco 3925 supports both standard and extended ACLs, which can be applied to the router interfaces, and also to VLAN interfaces.
Additionally, the Cisco 3925 also supports advanced features such as firewalls, VPNs, and intrusion detection and prevention systems, these features can be used to create a more secure environment and prevent unauthorized access to the network.
Troubleshooting and Maintenance
Troubleshooting: When troubleshooting the C3925-AX/K9 Cisco 3925 Application Experience-Router, it is important to first verify the router’s hardware and software versions to ensure that they are compatible and up-to-date. Next, check the status of interfaces and connected devices to ensure that they are properly configured and functioning. Also, verify that the router’s configuration is correct and that all necessary protocols and services are enabled. The “show” and “debug” commands can be used to gather more information about the problem and identify any issues or errors. Additionally, check for error messages in the router’s logs which can provide valuable information about the cause of the problem.
Maintenance: To ensure the smooth operation and longevity of the C3925-AX/K9 Cisco 3925 Application Experience-Router, it is important to keep the router’s software and security patches up-to-date. It is also necessary to monitor the router’s performance and resource usage to identify potential issues before they become critical. Regularly backing up the router’s configuration is a best practice, in case of any disaster recovery. Additionally, regular hardware checks such as cleaning dust from the fans and checking for loose cables should be done to ensure that the router is running at optimal performance. Scheduling regular maintenance downtimes to perform more extensive tasks such as firmware upgrades or hardware replacements is also recommended.
Quality of Service (QoS) Capabilities
The C3925-AX/K9 Cisco 3925 Application Experience-Router has a number of Quality of Service (QoS) capabilities that allow it to manage and prioritize network traffic for different applications and services.
- Class-Based Weighted Fair Queuing (CBWFQ): This feature allows the router to divide traffic into different classes and assign a specific amount of bandwidth to each class. This ensures that critical applications receive the necessary bandwidth while also preventing any one class from monopolizing the network’s resources.
- Low Latency Queuing (LLQ): This feature allows the router to prioritize delay-sensitive traffic such as voice and video over other types of traffic.
- Weighted Random Early Detection (WRED): This feature helps to prevent network congestion by randomly dropping packets when the network is approaching capacity.
- Traffic Shaping and Policing: These features allow the router to control the rate at which traffic is sent, received and accepted by the network, preventing network congestion and ensuring that each application or service gets the bandwidth it needs.
- Multi-Field Classification: This feature allows the router to classify traffic based on multiple fields such as IP address, port, protocol, etc.
- Integrated Services Digital Network (ISDN) and PPP support: The router supports ISDN and PPP protocols, which allows it to provide QoS for dial-up and leased-line connections.
- Quality of Service (QoS) Management: This feature allows the network administrator to monitor and manage the QoS settings on the router, including configuring and monitoring the different classes, queues, and policies.
General Information
- Manufacturer Cisco
- Manufacturer Part Number C3925-AX/K9
- Product Series 3900
- Product Model 3925
- Product Name 3925 Router
- Product Type Router
Interfaces / Ports
- Total Number of Ports 3
- USB Yes
- Powerline No
- Management Port Yes
- Number of Broadband (RJ-45) Ports 3
I/O Expansions
- Number of Total Expansion Slots 13
- Expansion Slot Type SFP (mini-GBIC)
- Expansion Slot Type ISM
- Expansion Slot Type EHWIC
- Expansion Slot Type PVDM
Network & Communication
- Network Technology 10/100/1000Base-T
- Ethernet Technology Gigabit Ethernet
Management & Protocols
- Security Features
- ACL
- IPsec
- L2TPv3
- Cisco IOS Firewall
- Cisco IOS Zone-Based Firewall
- Cisco IOS IPS
- Cisco IOS Content Filtering
- Flexible Packet Matching (FPM)
Memory
- Standard Memory 1 GB
- Maximum Memory 8 GB
- Memory Technology DDR2 SDRAM
- Flash Memory 256 MB
Power Description
- PoE (RJ-45) Port No
- Input Voltage 220 V AC
- Input Voltage 110 V AC
- Power Source Power Supply
Miscellaneous
- Package Contents
- 3925 Router
- Services Performance Engine (SPE100)
- Certifications & Standards Safety:
- UL 60950-1
- CAN/CSA C22.2 No. 60950-1
- EN 60950-1
- AS/NZS 60950-1
- IEC 60950-1
- EMC:
- 47 CFR, Part 15
- ICES-003 Class A
- EN55022 Class A
- CISPR22 Class A
- AS/NZS 3548 Class A
- VCCI V-3
- CNS 13438
- EN 300-386
- EN 61000 (Immunity)
- EN 55024
- CISPR 24
- EN50082-1
- Telecom:
- TIA/EIA/IS-968
- CS-03
- ANSI T1.101
- ITU-T G.823, G.824
- IEEE 802.3
- RTTE Directive
