OSPF: Important details regarding Summarization and Default Routes for exam day, it’s a long but worthwhile read!

OSPF Summarization is done only on ABR and ASBR routers in your OSPF domain, and use two completely different commands, but what if a router is an ABR and an ASBR? For example, did you know that using the command "default-information originate ..." you are telling the router to create a Type 5 LSA to … Continue reading OSPF: Important details regarding Summarization and Default Routes for exam day, it’s a long but worthwhile read!

EIGRP: DEEP Dive into Prefix-List configurations, Access-list vs Prefix-list, using Prefix-Lists to Filter EIGRP routes with Distribute-Lists!

Only the NBMA and Ethernet segments will be used for quick demonstrations and clarity, unless R4 or R5 is needed for demonstration. Now the idea of a Prefix-List in comparison to an Access-List may be hard to follow, but I will try to explain it. An Access-List at its most specific (Extended) matches only on … Continue reading EIGRP: DEEP Dive into Prefix-List configurations, Access-list vs Prefix-list, using Prefix-Lists to Filter EIGRP routes with Distribute-Lists!

Time based ACL’s, configuring time-range and differences in types of ranges, using time-based ACL’s to limit telnet access

I'm was going to wait for the NTP part of the course to go through this, but since it looks like ACL material finishes with this I will use the time-range command for now rather than synchronizing the network to an NTP server. A bit of a refresher from CCNA material, but it can't help … Continue reading Time based ACL’s, configuring time-range and differences in types of ranges, using time-based ACL’s to limit telnet access

Access-List Refresher: Standard, Extended, and Named ACL’s – Very good refresher material, some of this material like best practices I had even forgotten

I was going to just use two routers for this example, after work when I was tired and rushing, so I stopped and decided to be thorough I didn't want to work with loopbacks. So please forget the Stub things in the topology, those area's are not stubs, however the OSPF information is correct. Also … Continue reading Access-List Refresher: Standard, Extended, and Named ACL’s – Very good refresher material, some of this material like best practices I had even forgotten