Archive

Archive for November, 2012

Basic Multicast part 5 – PIM SSM and SSM mapping

November 28, 2012 3 comments

Continuing with Multicast topic I will talk this time about PIM SSM (Source Specific Multicast RFC 3569) and SSM mapping. In my previous posts on Multicast I demonstrated how to configure PIM DM/SM which uses IGMPv2 for host to router signaling. PIM DM and SM are known as “Any Source Multicast” or ASM. The receivers are willing to receive multicast from any source which is why a RP is needed in order to allow the receivers to discover new sources. With PIM SSM the concept is different as the receivers signal which source they want receive multicast traffic from by using IGMPv3 which means that RPs are not needed and the multicast routers in the multicast domain will only build shortest-path trees (SPT).

 For this post I will use the same topology as the other multicast posts:

Scenario: The Multicast source will send two streams, one for the multicast group 239.10.10.10 and one for the multicast group 239.20.20.20. The first group (239.10.10.10) will be running PIM SM and R4 will be the RP for this group. The second multicast group (239.20.20.20) will be running PIM SSM. The receiver will act as an IGMPv2/v3 receiver. In the second part of this post I will demonstrate how to configure SSM mapping where the receiver will not be IGMPv3 capable.

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My first lab attempt

November 22, 2012 6 comments

I failed my first lab attempt in San Jose the 19th of November. I did this attempt just after the INE R&S bootcamp. It is a hard feeling to know that you have failed but I knew that it was going to be tough. The troubleshooting section killed me. I usually enjoy the TS section when doing mock labs but in the real lab it is a ~28 routers topology instead of 6 (with INE topology). Actually I did 2 of the new TS labs from INE  and they are really well done and there are automatically graded (Presentation Video).

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Cisco Zone Based Firewall

November 5, 2012 6 comments

In this post I will talk about Cisco Zone Based Firewall (ZBF) which is a new approach to configure access control in the IOS firewall. I will first make an introduction to ZBF and then I will demonstrate how to configure it.

To illustrate the different examples in this post I will use the following topology:

IGP: EIGRP AS 10

 Platform/IOS: Cisco 2691/12.4(15)T11 Adv IP services.

 Side note: As I am using IOS 12.4(15)T I will only talk about ZBF rules for this IOS release. Some improvements and rules changes have been made in the last IOS releases (IOS 15.X).

 IP addressing: All routers in the topology are configured with loopback IP in the format X.X.X.X /32 where X is the router number.

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Basic QoS part 2 – Catalyst 3560 QoS

November 1, 2012 3 comments

In this post I will talk about Cisco Catalyst 3560 QoS. In Basic QoS part 1 I talked about policing and shaping on Cisco IOS routers.

 To illustrate the different examples in this post I will use the following topology:

IGP: EIGRP 10

 Platform/IOS: Catalyst 3560/ c3560-advipservicesk9-mz.122-44.SE6.bin

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