A few words about the setup. We operate a remote GNS3 server setup, where all components (server even clients) are version 2.2.25. The remote server is deployed in a Linux container.
We operate several IOS XRv 9k appliances that were in default state default during the import process. We have noticed the following problem. Running small topos with an IOS XRv, once the router is loaded it had no network interfaces.
Our ISP provider (SANET) offers an IPTV service, where the list of TV/radio programs is offered using SAP multicast at IPv4 address of 233.10.47.10. However, my PC (with Win 10 OS installed) stopped receiving the SAP announcements, and the playlist was just empty. All works fine but once it stopped. Even better, it works for some of my colleagues, but not for others
My PC runs dual-stack, i.e. my network works with IPv4/IPv6. My PC has several network adapters as I’m running some virtualization software.
This guide will walk you through the setup of a Linux based TACACS+ Authentication Server, using Ubuntu 20.04 that authenticates against a Windows Active Directory LDAP.
This guide assumes that you are familiar with installing and configuring Ubuntu Server and can deploy or have already deployed a Windows Active Directory infrastructure.
Create a simple MPLS network and observe partial parts of MPLS functionality. MPLS network consist of four routers, two edge routers - LSE1 and LSE2 whose fastEthernet interfaces are not parts of the MPLS network and two Label Switch Routers - LSR1 and LSR2 interconnected through serial lines.
Four routers are connected in a chain line topology:
To install the Microsoft loopback adapter on MS Win 11 OS you must:
In this article, I will set up a simple LAN network consisting of two PCs, one Mikrotik box that acts as a L2 LAN switch, and one Cisco router that connects everything to the internet using NAT. PCs and Mikrotik switch are in the separate VirtualLANs (VLANs). My VLAN definition is:
Devices addresses:
In this article, as the RouterOS CLI newbie, I will set up a simple LAN network consisting of two PCs, one Mikrotik box that acts as a simple L2 LAN switch, and one Cisco router that connects everything to the internet using NAT. All four devices are in the same broadcast domain and have IP addresses from the network address space : 10.1.1.0/24
Devices addresses:
The page provides summarized and updated (2020) overview of simulation and virtualization tools suitable for the practice of networking teachers or researchers.
To change the Solar-Putty font size follow these steps:
Here are screenshots:
This config example shows a Site-to-Site configuration of IPsec VPN established between two Cisco routers. VPN will use IKEv2 protocol with PreSharedKey (PSK) remote-site authentication. Topology simulates a Branch router connected over an ISP to the HQ router. There are several options for how to configure IKEv2. In this example, I’m using the symmetric PSK witch crypto map, where the IKEv2 process is started by ACL that identifies interesting traffic. I also do not use GRE tunnel for the interconnection of both sides, instead, simple static default routes are used.
Configuration runs on GNS3 emulator and I’m using the CSR1000v platform with version 16.12.01a IOS XE as the older ISR platform (7200 15.4 IOS) does not support IKEv2. On real devices, IKEv2 is supported on Cisco ISR Generation 2 (G2) that runs Cisco IOS software version 15.2(4)M or later (for example 29xx ISR), ASA with 8.4.(1) and later (including ASA 5510).
