Tag Archives: OSPF

IPv4 and IPv6 troubleshooting side by side

Posted on June 25th, 2015 (Thursday) by Mr. Bart

When you troubleshoot networking issues, you are usually told by most tutors, authors or lecturers, to do it by following the layers of the either layered model i.e. seven layers of the ISO model.

Posted in Cisco | Tagged % No valid source address for destination, Access Control List, ACL, administratively down, area mismatch, ARP, cable attenuation, collisions, congestion, CPU, CRC check-sums, data-link layer, default-gateway, Denial-of-Service, dhcp, Down, duplex, error-down, implicit deny, Input errors, Input queue, IPv4, IPv6, ipv6 access-list, ipv6 traffic-filter, ISO model, native VLAN mismatch, Neighbour Solicitation Protocol, network address range, network layer, OSPF, Output errors, Output queue, physical layer, process mismatch, return route, routing tables, show arp, show ip interface brief, show ip ospf database, show ip ospf neighbor, show ipv6 access-list, show ipv6 interface brief, show ipv6 neighbors, show ipv6 ospf database, show ipv6 ospf neighbor, SLAAC auto-configuration, speed, troubleshooting, up | Leave a comment

IPv6 Routing configuration

Posted on February 12th, 2015 (Thursday) by Mr. Bart

Keeping things in order First things first. To keep things in order, you need to have some routable IPv6 addresses configured. The link-local addresses will not be routed, so make sure you configure global unicast addresses, otherwise the routeing exercise … Continue reading →

Posted in Cisco | Tagged administrative distance, area, debug ipv6 routing, directly connected network, enable, ipv6 rip, ipv6 router ospf, local interface, no EIGRP, OSPF, RIPng, Router ID, show ipv6 ospf neighbor, show ipv6 rip, show ipv6 route | Leave a comment

Basic OSPF Configuration

Posted on May 8th, 2014 (Thursday) by Mr. Bart

Note: The spelling of the word that describes people who live next to someone is different in British and North American dialect of English. Cisco uses the American spelling in commands and their output. When we talk about a neighbour … Continue reading →

Posted in Cisco | Tagged adjacency state, area, area 0, Back Bone Area, Backup Designated Router, BDR, configuration, core area, default-information originate, Designated Router, DR, DROther, Full, gateway of last resort, NBMA, neighbor, neighbour, network, NonBroadcast Multiple Access, OSPF, physical interface, point-to-point, propagate default route, Router ID, router ospf, show ip ospf, show ip ospf database, show ip ospf neighbor, show ip route, wild-card mask | Leave a comment

OSPF

Posted on April 29th, 2014 (Tuesday) by Mr. Bart

The OSPF is link-state routing protocol. Link state protocol is such that the metric is based on bandwidth, load, reliability etc. of a given link as oppose to number of hops between networks.

Posted in Cisco | Tagged 2-Way, 224.0.0.5, 224.0.0.6, 2Way, ABR, active, Adjacency states, area, area 0, Area Border Routers, AS, ASBR Autonomous System, Attempt, Autonomous System Boarder Router, Back Bone Area, Backup Designated Router, bandwidth, BDR, Broadcast OSPF addresses, converged, convergence, Database Descriptor, DBD, Dead Intervals, Designate Router, Dijkstra algorithm, Down, DR, DROther, elections, Exchange, ExStart, Full, Hello Intervals, Hello message, IGP, Init, initial sequence number, Interior Gateway Protocol, link-state acknowledgement, link-state advertisement, link-state database, link-state protocol, link-state request, link-state update, Loading, loopback interface, LSA, Master, NBMA Non-Broadcast Multiple Access, neighbor relationship adjacency, neighbour relationship, Open Shortest Path First, OSPF, OSPF domain, OSPF Timers, passive, RID, Router ID, router priority, Shortest Path First, Slave, SPF | Leave a comment

Tag Archives: OSPF

IPv4 and IPv6 troubleshooting side by side

IPv6 Routing configuration

Basic OSPF Configuration

OSPF

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