With the growing deployment of IPv6, more and more companies and institutions are adopting IPv6 as their primary access line, which introduces a rather troublesome conflict issue. Old network protocols and new network protocols inevitably clash, especially as the IPv6 transition complicates DNS handling. Below, we explore this …
The router is the primary node device of the internet. Routers determine data forwarding through routing. The forwarding strategy is called route selection, which is also the origin of the router’s name. Its position and role in the network dictate that it must be capable of interconnecting many different networks. Many different networks imply different network links …
This article describes how to configure link load balancing in fixed IP and VPN environments, a commonly used method for load balancing. A demonstration is provided below. I. Networking Environment 1. As shown in the diagram, the user initially has two public incoming lines with fixed IP addresses, one from China Telecom and one from China Mobile. 2. VPN device …
As networks have evolved, so too have the various network-based attacks and viruses that come with them. These issues are frequently encountered even within internal networks. This creates a need for a security mechanism that can protect normal network operations, which led to the development of the QoS feature in routers. QoS is used to address bandwidth issues, network latency, and congestion…
PIM leverages the unicast routing table built by various unicast routing protocols to perform RPF checks, rather than maintaining a separate multicast routing table for multicast forwarding. It uses the RPF mechanism to forward multicast packets. When a multicast packet arrives at the local device, it first undergoes an RPF check: if the RPF check passes, it creates …
When configuring large networks, mistakes are almost inevitable given the amount of work involved. This article provides an in-depth summary of common router configuration errors to help you avoid wasting unnecessary time during setup. 1. Ignoring filtering when redistributing routes. When redistributing routes on a router, you need to enable route…
This is certainly not the first article written about a “Quick Guide to Setting Up a VPN with Cisco Devices,” but we still hope this guide can serve as a one-stop resource for ASA 5505 users looking to configure VPN and internet connectivity. The ASA itself comes with a setup wizard, but …
How to Recover Router Password: Step-by-Step Guide
Follow these steps to recover your router password:
1. Power off the router and wait 10 seconds, then power it back on. While powering on (or within 60 seconds of the router restarting), press and hold Ctrl+Break on the keyboard for a few seconds until the router prompt rommon 1 > appears…
How many users of wireless routers find the instructions unclear and don’t know how to configure them? While the factory default settings sometimes work, the wireless network at this point hasn’t undergone any encryption, posing a security risk. Therefore, it’s not recommended to use it without proper setup. Below, we’ll use a NETGEAR router as an example, …
First, assume two Cisco routers, R1 (server) connected to R2 (client), forming a simple chain LAN. Now let’s implement DHCP. The configuration commands and their explanations are as follows: 1. DHCP service configuration on R1 dhcp#configure terminal//Enter global configuration mode dhcp(config)#service dhcp// …
