CSU/DSU alarms indications
When you are troubleshooting Telco circuit, DSU/CSU alarm indication is important fact to isolate an issue without wasting time. The most common alarms are Red,…
Hosts.txt file location to set up for static DNS entry.
Check below location to find a hosts.txt file to set up a static DNS resolution Windows 95/98/Me — c:\windows\hosts Windows NT/2000/XP Pro — c:\winnt\system32\drivers\etc\hosts Windows…
Shadow T1 service configuration for Adtran router
Shadow T1 Frame-relay service configuration for Adtran router The following BGP example configuration is for shadow T1 Frame-relay service with same ASN. In order to…
Sample configuration for Tasman4100 router
Sample configuration for Tasman4100 router with 6Mbps tier. terminal exit terminal qos exit qos module t3 1 clock_source line dsu …
What is FIB(Forwarding Information Base)?
Tweet What is FIB (Forwarding Information Base)? CEF (Cisco Enhanced Forward) uses a Forwarding Information Base (FIB) to make IP destination prefix-based switching decisions. The…
IPv6 addressing install guide for windows XP and Vista
Tweet For the windows systems, no IPv6 software installation is necessary, but IPv6 stack should be enable to use IPv6 addressing. The procedure is quite…
Security Warning – Exposed WAN Link Identity by reverse lookup
If someone knows what is your IP address of WAN link, if someone knows what ISP you are currently using, if someone knows where your…
VPCS error with “206-unable to create UDP NIO”
Tweet VPCS(Virtual PC Simulator) is a PC simulating software which is small and easy to use. For the Dynamips user, this simulator is fairly handy….
Ethernet speed and duplex configuration
Tweet Speed mismatching issues may result in no connectivity. However, issues withauto-negotiation of duplex generally do not result in link establishment issues. Instead, auto-negotiation issues…
What is SYS-ID-EXT parameter in Spanning-tree?
Tweet The bridge ID priority is combined with the system ID extension to create the bridge ID priority for the VLAN. Bridge ID Priotirty =…
Verifying Cisco router traffic load-sharing by CEF
Tweet Cisco Express Forwarding (CEF) is well-known Cisco advanced Layer 3 IP switching technology. This technology brings traffic load-sharing technique that is functionality in a…
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