Troubleshooting network and TCP/UDP port connectivity issues on ESX/ESXi(2020669)

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Troubleshooting network and TCP/UDP port connectivity issues on ESX/ESXi(2020669) Purpose This article provides information on troubleshooting network and TCP/UDP port connectivity issues using these troubleshooting tools: ping/vmkping to troubleshoot network connectivity between two servers. telnet to troubleshoot TCP port connectivity. netcat (nc) to troubleshoot TCP port connectivity. openssl to troubleshoot SSL port connectivity and verify SSL certificate information. tcpdump and tcpdump-uw to collect packet traces to troubleshoot network issues. netstat and esxcli network to view active TCP/UDP connections to the host. Note: The telnet and nc tools help you to…

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Check Device Coverage

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About the Cisco Device Coverage Checker The Cisco Device Coverage Checker tool allows you to determine the current contract status of your Cisco devices. After entering valid serial numbers, the coverage status of each item is checked. Devices found to be covered by an active service contract are indicated by a checkmark icon () in the Covered column. You must have a valid Cisco.com account to use Cisco Device Coverage Checker. If you do not have…

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UCSS and ESW and SMARTnet Services Contracts

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UCSS and ESW and SMARTnet Services Contracts SMARTnet – purchased on hardware e.g. MCS servers or IOS gateways   Essential Software support  (ESW) – is SMARTnet equivalent for software.  It gets you TAC support, minor bug updates, collateral and software advisor and case collection. ESW does not provide major upgrades. Available in 1yr, 3yr and 5yr.  In the old days this was the “SAS” part of “SASU”. It is strongly recommended that ESW contract term…

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Group File, Directory and Device permissions: chmod

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Group File, Directory and Device permissions: chmod Set file, directory and device permissions: File, directory and device permissions can be set to allow or deny access to members of their own group or all others. Modification of file, directory and device access is achieved with the chmod command. The permissions can be assigned in octal notation or in the more easily recognized character format where the command form is: chmod [ugoa][+-=][rwxXst] fileORdirectoryName u User access g Group access o Other…

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Cisco UCS unsupported-connectivity error

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while installing a new Cisco UCS system with the one of the newer builds of the firmware which was 2.0(1s) we were getting an error with both chassis which said they were in an unsupported-connectivity state.  The config that we setup was pretty basic and straight forward.  We have two UCS Fabric Interconnects, with two chassis, and two cables from each blade in each chassis going to the Fabric Interconnects.  There’s a diagram over there…

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Understanding How Cisco WebEx Enabled TelePresence is Deployed

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Understanding How Cisco WebEx Enabled TelePresence is Deployed http://www.cisco.com/c/en/us/td/docs/telepresence/infrastructure/tms/config_guide/webex_enabled_telepresence/cts_webex_config/cts_webex_info.html#65805 There are three possible network topologies for Cisco WebEx Enabled TelePresence: SIP Video, Presentation and Audio SIP Video, Presentation and PSTN Audio: – Using a gateway registered to Unified CM – Using a gateway registered to Cisco VCS Control SIP Video, Presentation and Audio WebEx is deployed using WebEx Audio. Main video, content, and audio to and from the WebEx cloud is negotiated between the Cisco…

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Hi Guys , I  was going through the Route Reflector design and migration project and find below links useful source to consider from BGP Route Reflector perspective. Url# https://ccdewiki.wordpress.com/2013/06/05/bgp-route-reflector/   BGP Route Reflector Purpose The purpose is to reduce the number of iBGP peers Advantage over confederation is route reflector can be implemented in stages, where else confederation is an all or no. only the router reflector needs to be configured, the other BGP routers…

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Posted in BGP

vSphere Client Parameters

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vSphere Client Parameters Neither new, nor special, but still not known everywhere. With the vSphere Client you can… automatically login to a vCenter or ESXi host without typing username and password automatically login to a vCenter with the “Use Windows session credentials” option change the display language To accomplish this, just create or copy a shortcut to the vSphere Client and add the followig parameters:   Pass username and password  “C:\Program Files (x86)\VMware\Infrastructure\Virtual Infrastructure Client\Launcher\VpxClient.exe” -s <SERVER> -u…

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Leap Second Adjustment June 30

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Hi All , To ensure the correct alignment of astronomical and atomic time, the International Earth Rotation & Reference Systems Service has called for an extra second to be added to Coordinated Universal Time (UTC) at 23:59:59 on 30 June 2015. This will be the 26th leap second adjustment since 1972, and represents an important consideration for providers of computing, networking, and software solutions. Cisco Response In January 2015, the International Earth Rotation & Reference…

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Webex : Configuring SMTP & Storage Servers

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WEBEX – Configuring Servers Use these features to configure your servers: SMTP Server—The SMTP server handles the sending of email from the email client to the destination. Storage Server—The NFS server is the storage server where all the meeting recordings will be stored. Configuring a Mail Server Configuring an SMTP Server Configuring a Storage Server Using the Disaster Recovery Feature Configuring a Mail Server Configure a mail server to enable your system to send meeting…

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