ASR1000 : VxLAN Unicast mode Configuration and Verification

For the first blog in this series please Visit my Blog on VxLAN Multicast Mode . In this blog we are going to discuss the configuration and verification steps for VxLAN Unicast mode on Cisco ASR1000 devices. Apart form ASR1000 devices VxLAN is supported in Cisco Nexus and Csr1000v platform. If you have seen my … More ASR1000 : VxLAN Unicast mode Configuration and Verification

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Script : SSH into Cisco router with Python

Network programming is now becoming a necessary skill for Network engineers. You can no more become a good network engineer without Network programming skills. Things are getting changed on daily basis, every now and then we see new tools being introduced to automate boring and redundant things. There is a whole industry out there which … More Script : SSH into Cisco router with Python

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)?