Routing

Oct 18 2009   6:09AM GMT

CCIE Routing and Switching Official Certification Guide to be released in November 2009

Posted by: Yasir Irfan
CCIE Routing and Switching Official Certification, CCIE, Routing, Switching, Cisco Press, Rough Cuts, LAN Switching, CCNA, CCNP Books, CCNP, Cisco Press authors, Wendell Doman, Rus Healy, Denise Donohue, Cisco, Cisco Press Books, CCIE Routing and Switching Official Certification Guide, OSI model, bridging, IP and IP Routing protocols, Add new tag

I was just accessing the rough cuts for the Cisco CCIE Routing and Switching Official Certification Guide, 4^th Edition. I had a great first impression. I had a chance to read “LAN Switching” part. It was a great firsthand experience. This segment is organized well and the approach is similar to CCNA, CCNP books, starts with a brief introduction and then the most useful section of Cisco Press Books “Do I Know This Already?” Quiz followed by “Foundation topics and “Foundation Summary”.

 

Pic Courtesy: Cisco Press

 

The Cisco Press authors Wendell Odom, Rus Healy and Denise Donohue did a credible job; I liked the way they presented the topics, since I spent most of my time on Switching I really enjoyed the “LAN Switching” part. Though I am familiar with most of the things they were talking but it was great experience to refresh my info.

 

The CCIE Routing and Switching Official Certification Guide 4^th Edition is to be released on 19^th of November 2009 by Cisco Press, they are offering great discount do check Cisco Press web site for more details, but make sure you registered yourself to Cisco Press website to get more discount. Once the book released I will try to write a review on this book.

 

Mar 17 2009   12:28PM GMT

Don’t Panic for ICND 1 Simualtion questions.

Posted by: Yasir Irfan
ICND 1 Simualtion questions, ICND1, CCENT, Show ip interface, Show ip interface brief, CCNA, CCNA Exam, ICND1 Exam, CCENT Exam, Cisco Tips, Routing, IP Address, sho running-config

One of my colleagues went for the ICND 1 (640-822) exam and he failed to pass the exams with a small margin. He got few simulation questions, in which he was suppose the find out the IP address for the router interfaces connected in the topology provided. The show running command was disabled, he was suppose to use alternative IOS commands to determine the IP address assigned to the router interface.

 

In this scenario don’t panic,  the best command to determine the IP address assigned to interface s in any router is “show ip interface brief” or Show ip interfaces. Here is the sample output of these commands

 

ITKE-DAC-3745R01#sho ip interface brief

Interface                     IP-Address      OK? Method Status                Protocol

FastEthernet0/0         10.135.5.21     YES DHCP   up                    up     

FastEthernet0/1         192.168.1.2     YES NVRAM  up                    up     

Tunnel0                       172.31.31.50    YES NVRAM  up                    up     

ITKE-DAC-3745R01#

 

ITKE-DAC-3745R01#show ip interface

FastEthernet0/0 is up, line protocol is up

  Internet address is 10.135.5.21/24

  Broadcast address is 255.255.255.255

  Address determined by DHCP

  MTU is 1500 bytes

  Helper address is not set

  Directed broadcast forwarding is disabled

  Outgoing access list is not set

  Inbound  access list is not set

  Proxy ARP is enabled

  Local Proxy ARP is disabled

  Security level is default

  Split horizon is enabled

  ICMP redirects are always sent

  ICMP unreachables are always sent

  ICMP mask replies are never sent

  IP fast switching is enabled

  IP fast switching on the same interface is disabled

  IP Flow switching is disabled

  IP CEF switching is enabled

  IP CEF Feature Fast switching turbo vector

  IP multicast fast switching is enabled

  IP multicast distributed fast switching is disabled

  IP route-cache flags are Fast, CEF

  Router Discovery is disabled

  IP output packet accounting is disabled

  IP access violation accounting is disabled

  TCP/IP header compression is disabled

  RTP/IP header compression is disabled

  Policy routing is disabled

  Network address translation is disabled

  WCCP Redirect outbound is disabled

  WCCP Redirect inbound is disabled

  WCCP Redirect exclude is disabled

  BGP Policy Mapping is disabled

FastEthernet0/1 is up, line protocol is up

  Internet address is 192.168.1.2/28

  Broadcast address is 255.255.255.255

  Address determined by non-volatile memory

  MTU is 1500 bytes

  Helper address is not set

  Directed broadcast forwarding is disabled

  Multicast reserved groups joined: 224.0.0.5 224.0.0.6

  Outgoing access list is not set

  Inbound  access list is 101

  Proxy ARP is enabled

  Local Proxy ARP is disabled

  Security level is default

  Split horizon is enabled

  ICMP redirects are always sent

  ICMP unreachables are always sent

  ICMP mask replies are never sent

  IP fast switching is enabled

  IP fast switching on the same interface is disabled

  IP Flow switching is enabled

  IP CEF switching is enabled

  IP CEF Flow Fast switching turbo vector

  IP multicast fast switching is enabled

  IP multicast distributed fast switching is disabled

  IP route-cache flags are Fast, Flow, CEF, Flow Cache

  Router Discovery is disabled

  IP output packet accounting is disabled

  IP access violation accounting is disabled

  TCP/IP header compression is disabled

  RTP/IP header compression is disabled

  Policy routing is disabled

  Network address translation is disabled

  WCCP Redirect outbound is disabled

  WCCP Redirect inbound is disabled

  WCCP Redirect exclude is disabled

  BGP Policy Mapping is disabled

Tunnel0 is up, line protocol is up

  Internet address is 172.31.31.50/30

  Broadcast address is 255.255.255.255

  Address determined by non-volatile memory

  MTU is 1476 bytes

  Helper address is not set

  Directed broadcast forwarding is disabled

  Multicast reserved groups joined: 224.0.0.5

  Outgoing access list is not set

  Inbound  access list is not set

  Proxy ARP is enabled

  Local Proxy ARP is disabled

  Security level is default

  Split horizon is enabled

  ICMP redirects are always sent

  ICMP unreachables are always sent

  ICMP mask replies are never sent

  IP fast switching is enabled

  IP fast switching on the same interface is disabled

  IP Flow switching is enabled

  IP CEF switching is enabled

  IP CEF Flow Fast switching turbo vector

  IP multicast fast switching is enabled

  IP multicast distributed fast switching is disabled

  IP route-cache flags are Fast, Flow, CEF, Flow Cache

  Router Discovery is disabled

  IP output packet accounting is disabled

  IP access violation accounting is disabled

  TCP/IP header compression is disabled

  RTP/IP header compression is disabled

  Policy routing is disabled

  Network address translation is disabled

  WCCP Redirect outbound is disabled

  WCCP Redirect inbound is disabled

  WCCP Redirect exclude is disabled

  BGP Policy Mapping is disabled

ITKE-DAC-3745R01#

Feb 19 2009   2:03PM GMT

CCNA, Administrative Distance for the Dynamic Routing Protocols

Posted by: Yasir Irfan
CCNA, Administrative Distance, Routing, RIP, OSPF, BGP, IS-IS, IGRP, EIGRP, Routing Protocols, 640-802 CCNA Exam

If you are preparing for your CCNA then it’s better to know about the dynamic routing protocols.  Cisco Routers support many dynamic routing protocols for learning routes in a complex network topology. The routing protocols supported are the following:

       RIP

       OSPF

       BGP

       IS-IS

       IGRP

       EIGRP

Each routing protocol has its own Administrative Distance (AD), which is a value representing the trustworthiness of the specific routing protocol. If a router learns a destination route from two or more routing protocols, it selects the route from the protocol having the smallest Administrative Distance.

The below table shows the default Administrative Distance (AD) values for each routing protocol:

Now, if the router learns a specific destination route from both OSPF and RIP, it will select the route learned from OSPF because this protocol has a smaller AD compared to RIP (110 instead of 120).

Dec 13 2008   6:27AM GMT

How to configure an interface to default settings in a Cisco Switch or a Cisco Router?

Posted by: Yasir Irfan
Switches, Cisco, Routers, Switching, Routing and Switching, Cisco IOS, Routing, Cisco 2960, Cisco 2950, Cisco 6500, Cisco Tips, Cisco 3560, Cisco 3745, Cisco 3750-E, Router Troubleshooting, Cisco 877W Router, Cisco 6500 Series Catalyst Switch, Cisco 6503, Cisco Catalyst 6503-E Switch, Cisco Catalyst 6506-E Switch, Cisco Catalyst 6509-V-E Switch, Cisco Catalyst 6509-E Switch, Cisco Catalyst 6513 Switch

This is a cool command to erase just the configuration for a particular interface in a Cisco Switch or a Cisco Router.

In the following example we will configure the interface fast Ethernet 0/9  to default configuration

Current Configuration for fast Ethernet 0/9  

ITKE-Cisco#sho running-config interface fastEthernet 0/9

Building configuration…

 

Current configuration : 85 bytes

!

interface FastEthernet0/9

 switchport access vlan 100

 switchport mode access

end

ITKE-Cisco

 

Now we will configure the fast Ethernet 0/9 to default configuration using the following command

“default interface fastEthernet 0/9” 

ITKE-Cisco#configure t

Enter configuration commands, one per line.  End with CNTL/Z.

ITKE-Cisco(config)#default interface fastEthernet 0/9

Interface FastEthernet0/6 set to default configuration

ITKE-Cisco(config)#

 

Running configuration for fast Ethernet 0/9 after configuring to default settings

ITKE-Cisco#sho running-config interface fastEthernet 0/9

Building configuration…

 

Current configuration : 68 bytes

!

interface FastEthernet0/9

 switchport mode dynamic desirable

end

 

ITKE-Cisco#

Nov 12 2008   5:18AM GMT

Cisco Gifts Mega Router – Cisco Aggregation Services Router 9000 (ASR 9000)

Posted by: Yasir Irfan
Routers, Routing, Cisco News, ASR 9000, Aggregation Services Router, Mega Router

Today, Cisco announced a little something to help clear the way. The world’s largest maker of networking equipment unveiled a new member to its growing family of routers custom-made for the Information Age. Known as the Cisco Aggregation Services Router 9000 (ASR 9000), the company says the machine has six times more capacity and is four times faster than any other router in its class. In fact, the company says, the brawny router is more powerful than any other competing router, period.

  

Pic Courtesy: Cisco

The ASR 9000 also includes new technologies for proactively managing notoriously challenging video signals. It makes corrections and ensures picture quality for ultra-clear high-definition TV and other video services, Cisco executives say.

For more details check the press release from Cisco.

Oct 23 2008   9:16PM GMT

Cisco Reviles 360 Learning Program for CCIE Routing and Switching.

Posted by: Yasir Irfan
Cisco, Certifications, Switching, Cisco Certifications, Routing and Switching, CCIE, Routing, Cisco News, Cisco Systems, Cisco 360

The Cisco 360 learning program has been launched. What is it? Its Cisco authorized training for the CCIE Routing and Switching exam. The Cisco 360 learning program is designed to help Network professionals to transform into certified network experts.

 

Courtesy:Cisco

The Cisco 360 learning program for CCIE Routing and Switching begins with a four-hour pre-assessment for core routing and switching technologies, allowing organizations to send only qualified network professionals to the program. Once a candidate qualifies, students participate in a 360-degree learning experience that includes skills building, assessments, and mentoring to gain knowledge. Students and their managers can establish milestones and metrics through an online Learning Management System as the individual moves through the program.Students receive training and mentoring from the most proficient, expert-level instructors in the networking business today.

In addition, Cisco uses only authorized Cisco Learning Partners to deploy the new program. Trained and endorsed by Cisco for their competency and ability to deliver unprecedented expert-level training, Cisco Learning Partners are the only organizations to employ Certified Cisco Systems Instructors (CCSIs) and deliver Cisco authorized and approved content. The Cisco 360 Learning Program for CCIE Routing and Switching will be made available November 1, 2008, through select Authorized Cisco Learning Solution Partners and Cisco Learning Partners globally. Access the Cisco Learning Partner Locator here, November 1, 2008 to find an authorized Learning Partner in your region offering the program.

CCIE 360 Press Release