We will configure the SLA tracking for R2 with the condition as R2 should be master unless ping response time to 150.100.220.7 exceeds 80 MS.So we have configured the R2 with our above requirement: We got below messages once above configuration done. Checking the ping response: So now we enable the SLA tracking and observe… Read More »
We are having two routers as below and VRRP is configured for LAN. R1 is to be the master unless its route to 172.30.21.0/24 disappears or its metric increases. R1—————————–R2 | | |————–SW————-| Below is basic VRRP configuration on R1: Now we will figure out the metric threshold for the network 172.30.21.0 which we are… Read More »
We all knows that BGP is slowest protocol. But it can be more chatty protocol also. Suppose, You are having one CE router which is connected with PE (ISP managed) router and ISP is advertising lot of prefixes. But you don’t need of these all the subnets and want only few prefixes. In this case,… Read More »
Today, We will understand the ARP inspection that how can it impact non DHCP hosts. We are having R1,R3 and R5 are all on VLAN100, connected to switch SW1: R1 – Static host R3 – DHCP Server R5 – DHCP client This scenario shows how DAI works with DHCP snooping to block ARP requests from… Read More »
We will use below topology and different subnet at both end, then we will check the adjacency and try to ping in order to confirm. R2 F0/0 <—–> F0/0 R3 R2 Configuration: R3 Configuration: Checking routes on R2: Trying to ping 2001:3::3 from R2: Adjacency is establishing and able to ping because neighbors are known… Read More »