The next topic for CCNA is: 1.2 Select the components required to meet a given network specification I wish the blueprint would have been a bit clearer on what they mean with this topic but it’s reasonable to think that
CCNA – Operation of IP Data Networks 1.1
We kick off the CCNA series from the beginning. Operation of IP data networks is weighted as 5% in the CCNA RS blueprint. The first topic is: 1.1 Recognize the purpose and functions of various network devices such as routers,
CCNA RS Workbook
Hi everyone, People that know me know that I have always been keen on giving back to the community and helping people in their studies. On that note, I have decided to start creating content for a CCNA RS workbook
IPv6 Support in VRF on Catalyst 3k
I was looking for information on running IPv6 in VRF on the Catalyst 3k platform and there wasn’t much information available. I tried running IPv6 in VRF on Catalyst 3560 with correct SDM profile but got this error message: Switch(config-vrf)#address-family
Nasty Multicast VSS bug on Catalyst 4500-X
I ran into an “exciting” bug yesterday. It was seen in a 4500-X VSS pair running 3.7.0 code. When there has been a switchover meaning that the secondary switch became active, there’s a risk that information is not properly synced
Catalyst 3750 IPv6 ACL Limitations
I recently ran into some limitations of IPv6 ACLs on the Catalyst 3750 platform. I had developed an ACL to protect from receiving traffic from unwanted address ranges such as ::, ::1, ::FFFF:0:0/96. The first address is the unspecified address,
Blog Migrated!
Hi! I have decided to migrate my blog from wordpress.com to a private environment. The main reasons being that I felt that I had outgrown the normal wordpress.com site. I wanted to be able to install plugins and get more
Busting Myths – IPv6 Link Local Next Hop into BGP
In some publications it is mentioned that a link local next-hop can’t be used when redistributing routes into BGP because routers receiving the route will not know what to do with the next-hop. That is one of the reason why
More PIM-BiDir Considerations
Introduction From my last post on PIM BiDir I got some great comments from my friend Peter PalĂșch. I still had some concepts that weren’t totally clear to me and I don’t like to leave unfinished business. There is also
Many to Many Multicast – PIM BiDir
Introduction This post will describe PIM Bidir, why it is needed and the design considerations for using PIM BiDir. This post is focused on technology overview and design and will not contain any actual configurations. Multicast Applications Multicast is a