network topology

[forbiddenforest2k10]

hi all

thank you for all how guided me to design network topology as i m new in network field and have been given task to desig network topology to connect three location in three main cities  using fiber optic as back bone and uplink will also be fiber optic. (topologies are attached)as we have to use pulic network (i mean we will obtain lease line or use fiber optic back bone link of telecommuncation network) and we have planed provide connectivity among the three main locations using VPN. I suggest to use routers for connectivity among the remote locations but few of my friends suggesting to use ASA instead of routers because ASA proviedes routering as well as firewall and vpn solution as well.I dont know main difference between the routers and ASA. as I know ASA is firewall

I need kind help and guidance of esteemed network engineers for my network topology in following queries

can i use ASA instead of router to connect different locations? what is main difference between router and ASA

we will use vpn among the locations as I have connected R2 and R4, ASA2 and ASA2 using SW5 for redundant link is that batter to do so, and can we achieve vpn connectivity using this method.

in future we may obtain seperate E1 link among the R2 and R3 does ASA support E1 connectivity

please also guide me and provid me your valueable suggestions to remove the drawbacks as to see in my network topology

Regards

Forbs

[Kishore Chennupati]

Hi Fober,

ASA's can be used as Routers as well. But they are limited in what they can do as routers. You wont get the full felxibility of routers on the ASA's

ASA's are typically used as we firewalls or VPN concentrators etc. If you going to run IPsec from different locations then you can use the ASA as a vpn concentrator and terminate the tunnels on this device.

There are different models of ASA depending on where you want to deploy them. 5510's, 5520's etc. In the branches you can deploy the 5510's and if you have Data centres , then you can deploy 5520's or higher depending on the throughput etc.

So, in a nutshell, you can completely replace routers with ASA's

Hope this helps you a bit,

Regards

Kishore

[SohailAnwar91599]

Network refers to the set of devices (nodes) connected by communication links. A node can be a computer, printer, or any other device capable of sending and/or receiving data generated by other devices on the network.

Topology refers to the manner in which the network of computers is connected. Each topology is suited to specific tasks and has its own benefits and drawbacks. The choice of topology is dependent upon type of application, number of equipment being used, rate of data transfer required, response time, and cost.

The word network topology is used to explain the manner in which a network is physically connected. The aim is to exchange the data such as text, audio/video, and images from one point to another.

Network topologies are categorized into the following topologies:

• Point-to-Point Topology
• Bus Topology
• Star Topology
• Ring Topology
• Mesh Topology
• Tree Topology
• Hybrid Topology

https://computernetworktopology.com/