Author Archives: Admin

HP Procurve – CLI Common Troubleshooting Commands

Common CLI commands used for troubleshooting   — Ping ——- Ping <x.x.x.x> ————— — Trace Route —– Traceroute <x.x.x.x> ————————- — Show IP Addresses ——- Show IP —————————— — Show VLAN’s —— Show vlan ————————- — Show IP Routes —– … Continue reading

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HP Procurve – CLI Change VLAN IP Address

​CLI to change the IP Address of a VLAN — Command ———— switch # config t (config) # show vlans (config) # vlan <ID of VLAN> (vlan-ID )# ip address <IP ADDRESS OF VLAN><NET MASK> (vlan-ID) # exit switch (config … Continue reading

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HP Procurve – CLI Enable Jumbo Frames

CLI to enable jumbo frames for a VLAN — Command —————— switch # config t switch (config) # show vlans switch (config) # vlan <ID of VLAN> jumbo switch (config )# exit switch # write mem ——————————

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HP Procurve Switch – Flush all non-permanent entries in the ARP cache

​Flush all non-permanent entries in the ARP cache. — Command ————— clear arp ——————————-

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HP Procurve – CLI Configure IP Helper Address

Configure a IP Helper Address for a HP Procurve Switch — Command —————- enable config t vlan <VLAN ID> ip helper-address <IP ADDRESS of DHCP SERVER> exit write mem ——————————– Show ip helper-addresses on system — Command —————- show ip … Continue reading

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HP Procurve 5400 – Configuring sFlow

Configuring sFlow The following sFlow commands allow you to configure sFlow instances via the CLI.   — Command ———————————— [no] sflow <receiver-instance> destination <ip-address> [udp-port-num] ————————————————– Enables an sFlow receiver/destination. The receiver-instance number must be a 1, 2, or 3. … Continue reading

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MS Exchange – Event ID 2017 MSMQ Message Queuing Service cannot start

Event ID 2078 Source MSMQ The Message Queuing service cannot start. The checkpoint files cannot be recovered. To start the Message Queuing service without losing consistency, you must correct or recover corrupted checkpoint and log files. To start the service … Continue reading

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How to test SMTP operations using Telnet

How to test SMTP operations using Telnet 1. Telnet into Exchange server service using TCP port 25. — Command ——— telnet mail.mailserver.com 25 ——————— 2. Issue the following smtp command sequence — Command ——– helo mailserver.com <enter> ——————– response should … Continue reading

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Microsoft Exchange – Reverse DNS does not match SMTP Banner

Error: Warning – Reverse DNS does not match SMTP Banner The Cisco PIX firewall device uses an SMTP protocol filtering feature that is named Mailguard. When the Mailguard feature is turned on, it blocks all Extended Simple Mail Transfer Protocol … Continue reading

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Default Settings for Exchange Virtual Directories

TechNet Article on Default Exchange Server Virtual Directory Settings Exchange Server 2013 automatically configures multiple Internet Information Services (IIS) virtual directories during installation. This topic contains information about the default IIS authentication settings and default Secure Sockets Layer (SSL) settings … Continue reading

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