Genie's Tech Blog

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NSF, NSR and GR

Hello Folks... Welcome back again. I was reading through some High Availability features and came across a good discussion on NSR (Non-Stop Routing), NSF (Non-Stop Forwarding) and GR (Graceful Restart). Just thought of sharing the same in simple words. But, first we'll understand the need for the same. Most of the high end routers separate the Control plan with the Forwarding plane with separate components viz. memory and processors. The control plane runs the routing protocols, maintains the ... [More]

Packet Capture on ASR1k

Hi Guys, Recently I came across a Cisco's Packet Capture tool on ASR1000 platform. You can capture the packet both in the ingress and the egress direction. The packet capture is done on the Quantum Flow Processor (QFP) Asic of the ESP card. Please note that the packet capture is shown on the IOS-XE version 3.3.1. Below is an example for the same. If you want to capture a packet between ASR1k and any other router say ASR1k ------- ASR9k (Please remember that the ASR9k is a IOS-XR based router... [More]