Latest posts
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CISCO UCS – CIMC Usage and Installation
Cisco Integrated Management Console. Usage : The Cisco rack server comes with video, Keyboard, mouse and usb ports to get the access of the console but to use these ports one need to have physical access of the UCS Rack server, which is not feasible all the times. In order to access the server remotely,…
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Cannot run program “C:\Program”: CreateProcess error=2, The system cannot find the file specified
We often find this issue when we login to the UCSM and Click on KVM manager, we see the following error – Cannot run program “C:\Program”: CreateProcess error=2, The system cannot find the file specified Even if you try to setup the path file for Java in options given on the top of UCSM but…
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Cisco Prime infrastructure upgrade procedure from 2.0 to 2.1
Step 1. Check the Version of code already running and please read the release notes carefully. CPI20/admin# show ver Cisco Application Deployment Engine OS Release: 2.0 ADE-OS Build Version: 2.0.6.003-px-build ADE-OS System Architecture: x86_64 Copyright (c) 2005-2010 by Cisco Systems, Inc. All rights reserved. Hostname: CPI20 Version information of installed applications ——————————————— Cisco Prime Infrastructure…
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mac-address bpdu source command
Mac-address bpdu source version 2 is used to use 00:26:0b:xx:xx:x mac address as the source in BPDU by VPC peer.
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Default Spanning tree mode in nexus switches
Use show spanning tree command to check the current STP mode. As you can see, RSTP-PVST+ is the default spanning tree mode on nexus switches. N7k (config-if-range)# show spanning-tree vlan 30 VLAN0030 Spanning tree enabled protocol rstp ———<<<<<<<<<<<<< Root ID Priority 32798 Address 0005.73bc.067c This bridge is the root Hello…
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MST configuration on Cisco Nexus 7k switches
Step 1. Check the current STP mode. N7k (config-if-range)# show spanning-tree vlan 30 VLAN0030 Spanning tree enabled protocol rstp ———<<<<<<<<<<<<< Root ID Priority 32798 Address 0005.73bc.067c This bridge is the root Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec Bridge ID Priority 32798 (priority 32768…
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MTU in EIGRP Metric
In Eigrp, Metric is calculated by using below formula. metric = {K1*BW + [(K2*BW)/(256-load)]+(K3*delay)}*{K5/(reliability+K4)} As we can see MTU is not present in it. So how it is impacting the EIGRP calculation? The answer is it will not take part in route election till the time maxixmum path is not crossed. Changing MTu will not…
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EIGRP Metric calculation
Eigrp metric is calculated by using the below formula:- metric = {K1*BW + [(K2*BW)/(256-load)]+(K3*delay)}*{K5/(reliability+K4)} By default, value of only K1 and K3 are 1 and all other K values are 0 which makes the formula as shown below:- Note: – Mismatch in K values prevents the neighbor formation. Metric = 256 * ( Bandwidth +…
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Spanning-tree port type network and normal
Network Port:- Switchport connected to other switches and bridges via point to point link should be configured as network port. It can be enable per interface basis we well as in global mode. As soon as we configure network port, it enables the bridge assurance. Bridge assurance is used to prevent unidirection link. Port on which bridge…
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Spanning port types in Nexus switches
1. Edge port :- Switchport configured as edge ports when it is connected to end host devices. It can be enabled on access or trunk port. Sometimes there is a requirement to transition the trunk port, e.g port connected to server running ESXi, immediately in forwarding state without going to the various spanning tree states…