Implementing Quality of Service (QoS) on a Cisco ASR 901 Ethernet 4 Ports Router (model A901-12C-FT-D) involves configuring various QoS features on the router to manage and prioritize different types of network traffic. The following are some steps you can take to implement QoS on the Cisco ASR 901 router:
- Classify traffic: The first step in implementing QoS is to classify the different types of traffic on your network. This can be done using various methods such as access control lists (ACLs), marking, and policing.
- Create queues: Once the traffic has been classified, the next step is to create queues for different types of traffic. The Cisco ASR 901 supports several queuing mechanisms, including priority queuing, custom queuing, and weighted fair queuing.
- Configure schedulers: After creating queues, you will need to configure schedulers to determine how the router will handle the different types of traffic in the queues. The Cisco ASR 901 supports several scheduler options, including priority schedulers, custom schedulers, and weighted fair schedulers.
- Apply queueing and scheduling: Once you have created queues and configured schedulers, you can apply the queuing and scheduling to the different types of traffic on the router. This can be done using the interface configuration mode.
- Monitor and adjust: Finally, you should monitor your QoS implementation to ensure that it is working as expected. You can use various tools such as SNMP, NetFlow, and Cisco IOS commands to monitor your QoS and make any necessary adjustments.
It's important to note that these steps are general and the specific configuration will depend on the requirement of the network. Also, it is recommended to test and verify the configuration before applying it to production network and always to have a backup of the configuration.
Securing the A901-12C-FT-D Router with Firewall and VPN FeaturesSecuring the A901-12C-FT-D Cisco ASR 901 Ethernet 4 Ports Router involves implementing various security features, such as firewalls and VPNs. Here are a few steps you can take to secure the router:
Firewall Configuration:
- You can configure the router's built-in firewall to block unwanted incoming traffic and control access to internal networks.
- You can use access control lists (ACLs) to specify which traffic is allowed and which is denied.
- You can also configure stateful packet inspection (SPI) to monitor and block suspicious traffic based on its state.
VPN Configuration:
- You can configure the router to support VPN connections, such as site-to-site and remote-access VPNs.
- You can use protocols such as IPsec, GRE and L2TP/IPsec to establish secure VPN connections.
- You can also use certificate-based authentication to secure VPN connections.
Secure Management:
- You can configure the router to allow management access only from specific IP addresses or networks.
- You can also use secure management protocols such as SSH and HTTPS to encrypt management traffic.
- You can use two-factor authentication for management access to the router.
Limit the Router Access:
- You can limit access to the router's CLI to specific users or groups.
- You can also configure the router to log all CLI commands, which can be useful for auditing and troubleshooting.
It's important to note that these steps are not exhaustive and other security measures may be needed depending on your specific requirements. It's also important to regularly update the router's firmware to ensure that it is protected against known vulnerabilities.
Utilizing the Router's Advanced Routing FeaturesThe Cisco ASR 901 router has a variety of advanced routing features that can be utilized to improve network performance and manage traffic. Some of these features include:
- OSPF (Open Shortest Path First) - this is a routing protocol that can be used to dynamically discover and distribute routing information throughout a network. OSPF can be used to improve network convergence times and reduce the impact of link failures.
- BGP (Border Gateway Protocol) - this is a routing protocol that is commonly used in large enterprise and service provider networks. BGP can be used to distribute routing information between different autonomous systems (AS) and provide redundancy and fault tolerance.
- MPLS (Multiprotocol Label Switching) - this is a technology that can be used to improve network performance and provide quality of service (QoS) for different types of traffic. MPLS can be used to create virtual private networks (VPNs) and manage traffic through the use of label switching.
- VRF (Virtual Routing and Forwarding) - this is a feature that can be used to create multiple routing instances on a single router. VRF allows for the creation of separate virtual networks on a single device, providing isolation and security.
- Quality of Service (QoS) - this is a set of features that can be used to manage and prioritize traffic on a network. QoS can be used to ensure that critical applications and services receive the necessary bandwidth and low latency.
It's important to note that in order to utilize these advanced routing features, you will need to have a good understanding of routing protocols and network design, as well as the appropriate access and permissions to configure the router. Additionally, it's always recommended to test the configurations in a lab environment before implementing them in a production network.
Key Feature about this Cisco A901-12C-FT-D- Manufacturer Cisco
- Part Number or SKU# A901-12C-FT-D
- Product Series ASR 901
- Product Model A901-12C-FT-D
- Product Name A901-12C-FT-D Router Appliance
- Product Type Router
- Total Number of Ports 4
- Management Port Yes
- Number of Network (RJ-45) Ports 4
- Number of Total Expansion Slots 8
- Expansion Slot Type SFP (mini-GBIC)
- Ethernet Technology Gigabit Ethernet
- Network Technology -
- 10/100/1000Base-T
- 10/100Base-TX
- T1/E1
- VoIP Supported No
Memory
- Standard Memory 1 GB
Power Description
- PoE (RJ-45) Port No
- Redundant Power Supply Supported Yes
Dimension and Weight
- Compatible Rack Unit 1U
- Form Factor Rack-mountable
- Height 1.7 Inch
- Width 17.5 Inch
- Depth 10 Inch
- Weight (Approximate) 7.17 lbs
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