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Networking Blogs

Amilee San Juan
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Listen: https://smarturl.it/CCRS9E25 Follow us: twitter.com/ciscochampions With applications and users everywhere, the networks are now, more than ever, being tasked with delivering consistent protection while providing an exceptional user experience acro... Read More
Amilee San Juan
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Listen: https://smarturl.it/CCRS9E24 Follow us: https://twitter.com/CiscoChampion Cisco Radio Aware Routing addresses several of the challenges faced when merging IP routing and radio communications in mobile networks, especially those exhibiting ad hoc (... Read More
Amilee San Juan
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Listen: https://smarturl.it/CCRS9E23 Follow us: https://twitter.com/CiscoChampion The Wi-Fi 6E Catalyst 9136 access point takes advantage of the 6-GHz band to produce a network that is more reliable and secure, with higher throughput, more capacity, and l... Read More
Meddane
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When moving from OSPFv2 to OSPFv3, there are many changes in the format of the LSAs Type, but the most known changes are: IP prefix informations are no longer carried in Type-1 LSA and Type-2 LSA, new LSAs Type 8 and 9 are added to carry these prefixes. L... Read More
Meddane
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Read a preview of my book OSPF The ultimate for CCIE Enterprise and Infrastructure exam in Books Google Doc. Read a preview of my book OSPF The ultimate for CCIE Enterprise and Infrastructure exam in Books Google Doc #CCIE #Cisco #exam #Enterprise #Infras... Read More
Meddane
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Question 1: What are the OSPF Loop Prevention Mechanisms In single area, the routers have the Link State Database, having the same LSDB helps the routers to build a loop-free topology. Now in a multiarea topology, the ABRs are responsible for advertising ... Read More
Meddane
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Question 1: What are the OSPF Loop Prevention Mechanisms Question 2: Why area 0 is required? Question 3: what is the command to stop Type-7 LSA ? Question 4: How the NSSA ABR translator election occurs? Question 5: How to stop receiving specific subnets I... Read More
Meddane
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If an NSSA ASBR originates a default route into the OSPF in order to reach an external domain, the default route is injected as a Type 7 NSSA External LSA. If at the same time the NSSA ABR connecting that NSSA to Area 0 is generating a default route via a... Read More
Meddane
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In reality, OSPF is a link-state routing protocol only within an area (intra-area); but almost a distance-vector routing protocol between areas (inter-area). One of the advantages of link state protocols is that the link state database provides a “view” o... Read More
Meddane
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Today I received a self copy of the book OSPF The ultimate with simple cover and simple format content and easy to read more than 300 pages and 30 scenarios that give additional and precious informartions. I hope this is not the last one. Indeed it's not ... Read More
Meddane
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Basic configuration of all routers: R1: interface Loopback0 ip address 1.1.1.1 255.255.255.255 ! interface FastEthernet0/0 ip address 10.1.1.1 255.255.255.0 no shutdown ! interface Serial1/1 ip address 10.0.12.1 255.255.255.252 no shutdown R2: interface L... Read More
Meddane
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Configuration of the basic IPv6 addressing on all routers: R1: interface Lo0 ipv6 address 2001:db8:1111::1/64 ! interface Serial1/1 no ip address ipv6 address 2001:12::1/64 no shutd R2: interface Lo0 ipv6 address 2002:db8:2222::2/64 ! interface Serial1/1 ... Read More
Meddane
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Basic Configuration: R1: int fa0/0 ipv6 address 2001:1111::1/64 no shutdown ! int s1/0 ipv6 address 2013:13:13::1/64 no shutdown ! int s1/1 ipv6 address 2012:12:12::1/64 no shutdown R2: int fa0/0 ipv6 address 2001:2222::2/64 no shutdown ! int s1/1 ipv6 ad... Read More
Meddane
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Basic configuration of all routers: R1: interface Loopback0 ip address 172.16.1.1 255.255.255.0 ! interface Serial1/0 ip address 10.0.13.5 255.255.255.252 no shutd ! interface Serial1/1 ip address 10.0.12.1 255.255.255.252 no shutd R2: interface Loopback0... Read More