Category Archives: Uncategorized

How to configure Cisco router as NTP server 1- you have to obtain public NTP server addresses from www.ntp.org 2-  configure you router with NTP server IP GK_RTR#configure terminal GK_RTR(config)#ntp server 64.209.210.20 GK_RTR(config)#ntp source lo GK_RTR(config)# ntp master GK_RTR(config)#clock timezone … Continue reading →

Cisco Router as DHCP Server Using a Cisco router as a DHCP server is a somewhat common practice in smaller networks.In this example we have two VLANs one for Voice and one for DATA. DATA VLAN  IP  Nework Range  172.16.1.0 … Continue reading →

How to calculate PVDM requirement for Cisco IP Telephony DSP (Digital Signal Processors) is a chip that performs all the sampling, encoding, and compression functions on audio coming into your router .DSPs typically come in chips to install in your Cisco … Continue reading →

ISDN  T1 E1 Troubleshooting TEI_ASSIGNED ISDN Status as TEI_ASSIGNED meaning Which indicates that the PRI does not exchange Layer 2 frames with the Telco switch. Use the show controller e1 x command to first check the controller t1 circuit, and … Continue reading →

VOS3000 Hacking prevention and protection VOS3000 old versions are being hacked . its costing too much money through illegal calls . you can prevent it some level  by taking some precaution . 1-  Make your server SSH root password complicated … Continue reading →

How to customize vos3000 login page You can customize vos3000 login page by editing following files /usr/kunshi/vos3000/webclient/jsp/index.html /usr/kunshi/vos3000/webclient/jsp/js/lang_en_us.js  

How to squid proxy not detected as a proxy Edit   /etc/squid/squid.conf and add the following lines ====== via off forwarded_for off request_header_access Allow allow all request_header_access Authorization allow all request_header_access WWW-Authenticate allow all request_header_access Proxy-Authorization allow all request_header_access Proxy-Authenticate … Continue reading →

Cisco Feature Navigator Define a specific software image in order to view its supported features http://tools.cisco.com/ITDIT/CFN/jsp/SearchBySoftware.jsp Search Cisco  IOS features and there flash / memory  requirement.

UCS HW and SW Interoperability This form provides interoperability information for Cisco Unified Computing System (UCS) components and configurations that have been tested and validated by Cisco, by Cisco partners, or both. Use this form as a reference for supported … Continue reading →