Here i am going to explain how to change paths using delay in EIGRP, We already know that EIGRP uses Bandwidth and Delay for metric calculation but we cant change bandwidth of links in production network . The path with lesser delay will be the desired path. In the above topology there are two […]
Traffic Engineering in EIGRP using Delay Read More »
In RIPv2 we can tune its updates there are so many ways , Lets see some of them RIPv2 Broadcast updates Normally RIPv2 uses 224.0.0.9 as the multicast address but we can change it to global broadcast address. debug ip rip of R1 is given below *Sep 25 14:38:38.069: RIP: sending v2 update to 224.0.0.9
Update Tuning in RIPv2 Read More »
In this article i am going to explain how to manipulate route with AD value in RIP. For this i am using the same old topology. 10.0.0.0/8 is variably subnetted, 3 subnets, 2 masks R 10.4.4.0/24 [120/2] via 172.16.23.1, 00:00:19, Serial1/1 [120/2] via
Route Manipulation in RIPv2 using AD Value Read More »
In this topology we are using RIPv2 and R2 is getting route information about 10.4.4.0/24 from R3 and R1. But i don’t want to install two routes in the table. I want to use R3 to reach that network for that i am using Offset-List. Lets check the present routing table of R2 10.0.0.0/8 is
Route manipulation in RIPv2 using Offset-List Read More »
Lets check path selection in routing , Find the longest match:- We want to go to 1.2.3.4 and in the routing table there are three entries like 1.0.0.0/8 is variably subnetted, 3 subnets, 3 masks S 1.0.0.0/8 [1/0] via 172.16.12.1 S 1.2.0.0/16 [1/0] via 172.16.12.2 S 1.2.3.0/24 [1/0] via 172.16.12.3 Then it will choose 1.2.3.0/24
Why did it choose this path ? Read More »
In the Static routing there is one key word permanent is there, lets check the significance of that. If the exit interface is Down then the route will also removed from the table so in some cases we want to keep the routes in the table even if the exit interface is down. For that
What is permanent key word in Static Routing ? Read More »
Routing is the process of selecting paths for networks. We can use either Static or Dynamic method for this, in static routing the administrator itself assigning paths for each unknown networks but in the case of dynamic protocols are building paths for those unknown networks. There are some advantages and disadvantages for those two methods,
Static Routing in Cisco Router Read More »
Proxy ARP is a mechanism which allows two subnets to communicate with each other without configuring Default Gateway. I am going to explain it with a simple topology. Let’s check the configurations hostname R3 ! ! no ip routing ! ! interface Ethernet0/1 ip address 10.10.10.1 255.255.255.0 no ip route-cache hostname R1
Why we need Proxy ARP ? Is there any replacement ? Read More »
The Open Shortest Path First (OSPF) is an Interior Gateway Protocol used to distribute routing information within a single Autonomous System. It is open standard (RFC2328) It is a Link-state protocol Administrative Distance is 110 Uses cost as metric Fast convergence VLSM support Scalable to large networks Stub capabilities Authentication (None, Clear-text, MD5) Reliability (Sends
Introduction to OSPF Read More »
Neighbour table Topology table (all possible paths to the destination) Routing Table (Best path) Advertised distance (distance between the local router and the next-hop router) Feasible distance (sum of these ADs costs is referred to as the feasible distance (FD) Successor (Installed in the routing table)
