Networklearner

I am a network professional with over 18 years of experience in enterprise and data‑center networking. I am a CCIE Data Center certified engineer with strong hands‑on expertise in Cisco Nexus and Cisco ACI design, deployment, troubleshooting, and operations. I work on production ACI fabrics and am available for Cisco ACI and Nexus freelancing or consulting work. Contact: rockingoa@gmail.com

Thursday, 30 January 2020

3850 stack requirement

3850 stackwise-480 supports mixed stack which means any model of 3850 cannot be used in a stack. Whereas License(LAN base, IP base or IP ...

Cisco IPN configuration and hardware requirement

Below are the configuration requirement for IPN network. 1. Routed Sub-Interface with Vlan-4 : IPN device interface which is connected t...

Saturday, 25 January 2020

SSH accessibility check of multiple cisco router and save the output in a file

import paramiko import time import sys import logging import socket remote_conn_pre = paramiko.SSHClient() remote_conn_pre.set_missi...

SSH accessibility check on mulitple routers

Make a notepad contain IP address of the routers where we need to check the SSH accessibility. import paramiko import time import sys ...

Friday, 24 January 2020

Jumbo frame configuration on Nexus

I have tried to explain the MTU configuration on the Nexus platform. MTU configuration varies based on the port type and hardware p...

Wednesday, 15 January 2020

How to create BD in Cisco ACI

In traditional networking, we used to have VLAN as the Layer 2 forwarding domain which also define the broadcast domain. Whereas in ACI, V...

Tuesday, 14 January 2020

How to create VRF in Cisco ACI

In ACI, VRF concept is still the same as traditional network the only difference is VRF is not fabric wide unique but has a significance ...

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