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Saturday, November 15, 2008 6:22 PM

How NBAR actually classifies the traffic flows?

I still love Cisco. My one true love. It hurts with you :) Anyways lets start with Layer 7 traffic filtring on Cisco router. NBAR protocol classification feature has long supported enhanced HTTP URL matching features. However, Cisco documentation site
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Wednesday, September 17, 2008 9:22 PM

L2VPN Taxonomy

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Sunday, September 14, 2008 5:58 PM

JUNOS Candidate Configuration and Explicit Commits

One of my longtime gripes about IOS is that when you type a new statement to the CLI and hit return, the statement immediately becomes active on the router. For someone as mistake-prone as me, this is a big risk. And given that the majority of network
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Monday, September 08, 2008 1:47 PM

Scripting and Customization in JUNOS

JUNOS software (Juniper's) is a highly useful nework operating system for any network engineer to achieve goals. In JUNOS, there are times when you can enter all the individual lines of a configuration correctly, and the configuration can still be wrong.
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Wednesday, August 27, 2008 11:53 AM

Recover BGP password (Juniper JUNOS)

# Get a root shell: jahil@junos > start shell % su - root Password: jahil@jahil% # View the contents of /var/etc/keyadmin.conf jahil@jahil% less /var/etc/keyadmin.conf tcp 179 0.0.0.0 10.0.0.1 md5 instance default 0x6162636431323334 tcp 179 :: 2001:DB8:1::1
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Friday, August 01, 2008 7:22 PM

The beauty of Juniper JUNOS

I'm actually a Cisco /Unix geek. But I'm working on some giant Juniper routers now a days. The beauty of Juniper router opearting system (JUNOS) is, indeed, based on FreeBSD. Upgrading opearting system is my favorite things, because I love impressive
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Monday, July 28, 2008 12:52 PM

Create a direct shortcut to Network Connections (Windows Vista)

The new Network and Sharing Center in Windows Vista is great for the average Windows user but can be a huge headache for advanced users. When I need to make a change to my network settings I don't want to be forced to go through the networking interface
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Monday, July 21, 2008 6:27 PM

JNCIS-M Certification Cleared

so finally cleared Juniper’s JNCIS-M exam today. I hope to finish JNCIP-M within next 3-4 week. Wish me all the luck :)
Posted by jahil | 2 Comments
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Wednesday, June 25, 2008 10:57 PM

Juniper Router On The Stick Configuration (JUNOS)

Router JAHIL is directly connected to a VLAN-capable switch and needs to be configured to talk to AHMIQ on one subnet and NAKAMA on another over the same Fast Ethernet port. The first step in configuring VLANs is to enable VLAN tagging on the physical
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Wednesday, May 14, 2008 9:57 PM

Cisco && Magic Question Mark (?)

In Cisco IOS, Every mode (user mode, privileged mode etc) has help system built in. You can use the magic question mark (?) in user mode as well as in sub-configuration mode. What if you want to use question mark (?) in description or aspath-regex. :)
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Tuesday, May 13, 2008 11:58 PM

Cisco URL Blocking/Filtering

NBAR can be used to apply application based filters such as blocking youtube.com traffic. To accomplish this we can categorize traffic based on the HTTP hostname. Next we will create a policy-map that matches the youtube.com class and drops the traffic.
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Friday, May 02, 2008 3:53 PM

How to Netflow with Csico 6500

The post has been written to answer Mr Drew's asked question. The NetFlow table on the route processor (RP) captures statistics for flows routed in software and the NetFlow table on the PFC (and on each DFC) captures statistics for flows routed in hardware.
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Tuesday, April 08, 2008 8:41 PM

How To Change Windows (Default Gateway/Route)

If you are using Windows (2000, XP, Vista and want to change the default gateway (default route); you can use the command below... c:\> route change 0.0.0.0 mask 0.0.0.0 x.x.x.x -p ( -p makes a route persistent across boot of the system)
Posted by jahil | 3 Comments
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Friday, July 20, 2007 10:58 PM

How to identify/reset the stuck sessions in Cisco Router's

There are 5 max concurrent session in Cisco world. There can be a situation in life in which the max concurrent sessions reach the limits. When addressing such situations, it might help. The following command on Unix will dump all the TCBs of the remote
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Monday, May 07, 2007 5:05 PM

simultaneous web connections (Squid)

Today, one of my friends asked me how you limit the number of simultaneous web connections from a client browser system using the open source Squid proxy server. Well, You need to use squid ACCESS CONTROLS feature called maxconn. It puts a limit on the
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