Cisco IOS IP NAT Trouble Ticket 2

In continuation of my last post Trouble Ticket 1 , following is another trouble ticket related to NAT.  Please find the details below : Task : In this example we have configured NAT on SITE1 router to translate hosts going out from inside network. This is simplest for of NAT but for some reason the … More Cisco IOS IP NAT Trouble Ticket 2

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Using SNMP to download running-configuration from Cisco router via SCP

We know that SNMP can be used for many tasks apart from monitoring. One of them is to download configuration from the networking device. For this purpose we use SNMP SET commands to set the required variables on the router and then trigger the download. In this blog I will concentrate on SCP(Secure copy)  as … More Using SNMP to download running-configuration from Cisco router via SCP

MPLS QOS

In my previous post I have setup a very basic MPLS network. I will use the same setup to explain how exactly MPLS ensures QOS for packets which hit MPLS domain with a tag. Following is the process which occurs when the plane IP packet enters the MPLS domain. Tags available in the IP field … More MPLS QOS

Question : Why all other areas must be connected to ospf area 0(backbone)?

What I have read and know till now is since ospf behaves like distance vector protocol for inter area communication hence it is vulnerable to routing loops that’s why all the ABRs must be connected to ospf area0 and interarea communication happens through backbone area ….but you may ask that how distance vector in inter … More Question : Why all other areas must be connected to ospf area 0(backbone)?