First of all, the Embedded Service Engine has minimum memory requirement. 1GB for Cisco 2911 and 2921 1.5GB for Cisco 2951 2GB for Cisco 3925…

Here is link for Cisco Unified CME 9.5 Supported Firmware, Platforms, Memory, and Voice Products

I got an old Cisco 2811 from ebay with cheap price. Out of box, I got below warning message. *Sep 10 01:29:05.887: %ENVMON-4-FAN_LOW_RPM: Fan 1 service…

How to create Cisco VoIP lab with Cisco Unified Communication Express in GNS3     1. Brief GNS3 version : 0.8.7 Cisco Router IOS :…

Here is popular list of public NTP server IP address time-a.nist.gov  (129.6.15.28) time-b.nist.gov  (129.6.15.29) time-b.nist.gov  (129.6.15.30) time.windows.com  (207.46.232.182) ntp.asql.co.uk  (82.68.206.125) chronos.csr.net  (194.35.252.5) time.nist.gov  (192.43.244.18) https://tf.nist.gov/tf-cgi/servers.cgi…

Here is steps to configure DHCP reservation with MAC address on Cisco Catalyst 3750   IP Pool : 10.10.10.0/24 MAC#1 :  1111.2222.3333 MAC#2 :  4444.5555.6666…

Here is some SNMP OID for Avaya ERS switches.   envFans: 1.3.6.1.4.1.45.1.6.3.3.1.1.10.6 envTemp: 1.3.6.1.4.1.45.1.6.3.7.1.1.5.5 cpuLast10Seconds: 1.3.6.1.4.1.45.1.6.3.8.1.1.11.3 cpuLast1Minute: 1.3.6.1.4.1.45.1.6.3.8.1.1.5.3 cpuLast10Minutes: 1.3.6.1.4.1.45.1.6.3.8.1.1.6.3 cpuLast1Hour: 1.3.6.1.4.1.45.1.6.3.8.1.1.7.3 cpuLast24Hours: 1.3.6.1.4.1.45.1.6.3.8.1.1.8.3 cpuTotal: 1.3.6.1.4.1.45.1.6.3.8.1.1.4.3…

  Avaya ERS switches logging buffered 64000 logging monitor informational aaa authentication login default group radius local  log config   logging enable   logging size…

VoIP QoS tips and configuration in best practice   Remember "QoS is ONLY happening, when congestion on the circuit". In general QoS is more useful…

Multiple links between Avaya ERS 5500 and Cisco switch

How to factory reset Cisco CP-7911G VoIP phone   A. Factory reset 1. Power off 2. Hold " # " button + power on. 3….