Category: Cisco

Mar 21 2013

How to set DHCP reservation on Cisco Router

How to set DHCP reservation on Cisco Router The best way to find the correct client ID is as follows: Use DHCP to assign the IP address to the device. Take note of  the newly assigned IP address from the router. At the router, show ip dhcp bindings | include ip-address command to display the client-id to IP …

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Dec 25 2012

Cisco Router and PIX, show config command without pause or more

Cisco Router and PIX, show config command without pause or more Router: “terminal length 0” to stop the page breaks. “terminal no length 0” to resume them, or “terminal length 24“. Pix: “no pager” to stop the page breaks. “pager 24” to resume them.

Jun 07 2012

Multimode SC to LC fiber patch cord

May 30 2012

How to Configure Cisco router for SingNet ADSL

How to Configure Cisco router for SingNet ADSL Configure PPPoE support on Cisco router such as 827 / 837 cisco# en cisco# config term cisco(config)# no vpdn logging cisco(config)# vpdn-group 1 cisco (config-vpdn)# request-dialin cisco (config-vpdn-req-in)# protocol pppoe cisco (config-vpdn-req-in)# interface Ethernet0 cisco (config-if)# ip address 192.168.1.1 255.255.255.0 cisco (config-if)# ip tcp adjust-mss 1452 cisco …

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Feb 20 2011

%Error opening tftp://255.255.255.255/network-confg (Timed out)

After IOS update if you experience the below issue/error :   %Error opening tftp://255.255.255.255/network-confg (Timed out) %Error opening tftp://255.255.255.255/cisconet.cfg (Timed out) %Error opening tftp://255.255.255.255/router-confg (Timed out) %Error opening tftp://255.255.255.255/network-confg (Timed out) %Error opening tftp://255.255.255.255/router.cfg (Timed out)     Then you need to use “no service configure” in configure mode to disable it.

Feb 20 2011

How to delete router configuration

write erase command when in enable mode. This is an old command, but it is still supported, and works on all the switches and routers. On switches, also delete the vlan.dat file in flash otherwise it still ‘remembers’ the vlans configured. When you have done the command, reload the router, and it is back to …

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Apr 27 2010

Cisco Catalyst 2900/3500/3550 XL Recovery

As per Cisco Catalyst Fixed Configuration Layer 2 and Layer 3 Switches: Unplug the switch. Press the Mode button (left side of front panel) and keep it depressed. Reconnect power. When the LED above Port 1x goes out, release the Mode button. Issue the flash_init command: switch: flash_init Initializing flash… (output deleted…) Issue the load_helper …

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Apr 21 2010

Cisco VPN Client – TCP and UDP Ports

The Cisco VPN client is the client side application used to encrypt traffic from an end user’s computer to the company network. IPSec is used to encrypt the traffic. When using standard IPSec, IKE is used for the key negotiation and IPSec to encrypt the data. IKE uses UDP port 500 and IPSec uses IP …

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Apr 17 2010

Cisco Interface Card WIC-1B-S/T vs WIC-1B-U

The Integrated Services Digital Network (ISDN) Basic Rate Interface (BRI) WAN interface cards are used on the Cisco routers. Each card supports a single ISDN BRI port offered with and without the NT1 interface. The S/T WAN interface card module (WIC-1B-S/T) needs the external Network Termination 1 (NT1) device whereas the U WAN interface card module …

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Apr 03 2010

Configuring Cisco router to cable modem

There are 4 basics steps: Set the IP address of the interfaces Set the router as a DHCP server Configure NAT Configure Routing Setting IP Address to Cisco Router’s Interfaces We need to first set the IP address of the router’s interfaces to begin configuring Cisco router to work with cable internet. Make sure your …

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