Notes with tag: #ospf

• ASBR Behavior with External Type 2 OSPF Routes

  #ospf#e2#asbr#redistribution#redistribu

• DMVPN - Dual-Hub Single-Cloud with redundant spoke links config guidelines

  #dmvpn#dual-hub#single-cloud#routing-protocol#ospf#eigrp#guidelines

• DMVPN - OSPF and multiple areas

  #dmvpn#ospf#multiple-areas

• DMVPN - Phase 2 OSPF neighbor adjacencies

  #dmvpn#phase2#ospf#neighbor#adjacency

• DMVPN - What is the best routing protocol to use

  #dmvpn#routing#dynamic#bgp#ospf#eigrp

• LFA, remote LFA, and how they work together in OSPF

  #lfa#remote-lfa#ospf

• Link State Routing Protocols

  #routing#dynamic#protocol#link-state#lsa#spf#ospf#is-is#igp

• MPLS - L3VPN BGP OSPF Redistribution

  #mpls#bgp#ospf#redistribution#vrf

• MPLS - OSPF redistributed routes appear as O IA

  #mpls#ospf#redistribution#inter-area#superbackbone

• MPLS - multiarea OSPF in the core

  #mpls#ospf#multiple-areas

• OSPF - A comparison with IS-IS

  #ospf#isis#is-is#comparison

• OSPF - ABR has at least one interface in Area 0

  #ospf#abr#backbone#area#backbone-area

• OSPF - ASBR E-bit in an LSA

  #ospf#e-bit#asbr#lsa

• OSPF - Adjacencies in a Multi-Access network segment

  #ospf#adjacency#multi-access#dr#bdr#neighbor

• OSPF - Adjacency Between NBMA and P2MP Non-Broadcast Networks

  #ospf#adjacency#nbma#point-to-multipoint#network#type

• OSPF - Advertising point to multipoint networks

  #ospf#routing#point-to-multipoint#network-type#routing-table

• OSPF - Area Border Router (ABR)

  #ospf#abr

• OSPF - Autonomous System Boundary Router (ASBR)

  #ospf#asbr

• OSPF - BDR is elected before DR

  #ospf#dr#bdr#election

• OSPF - Cost of summarized routes

  #ospf#summarization#cost

• OSPF - DR-BDR election per broadcast domain

  #ospf#dr#bdr#election#broadcast

• OSPF - DR-BDR election priority of zero

  #ospf#dr#bdr#election#priority#zero

• OSPF - Database Example

  #ospf#database

• OSPF - Default route advertisement next hop IP

  #ospf#default-route#default#route#default-information-originate#always

• OSPF - Down (DN) Bit

  #ospf#dn#down#c-bit

• OSPF - ECMP across two different areas

  #ospf#ecmp#multiple-areas

• OSPF - ECMP to destination in Area 0

  #ospf#ecmp#areas#backbone

• OSPF - Enabling authentication

  #ospf#authentication

• OSPF - HMAC-SHA Extended Authentication

  #ospf#authentication#ios#ios-xr

• OSPF - Identifying the router type

  #ospf#abr#asbr

• OSPF - LSA Max Age

  #ospf#lsa#refresh#time#maxage

• OSPF - LSA Refresh Time

  #ospf#lsa#refresh#time#lsrefreshtime

• OSPF - LSA checksum

  #ospf#checksum#lsa#database

• OSPF - Link ID and ADV Router in the OSPF database

  #ospf#link-id#adv#router#database

• OSPF - Link ID in the OSPF database

  #ospf#link-id#database

• OSPF - Link State Updates (LSUs)

  #ospf#lsu#link-state#update

• OSPF - MPLS SuperBackbone

  #ospf#mpls#superbackbone

• OSPF - NBMA neighbors listen on 224.0.0.5

  #ospf#nbma#neighbor#adjacency#multicast

• OSPF - NSSA P-bit

  #ospf#p-bit#nssa

• OSPF - NSSA no automatic default route

  #ospf#nssa#default#route#default-route

• OSPF - Neighbor states

  #ospf#neighbor#adjacency#state

• OSPF - Neighbor vs Adjacency

  #ospf#adjacency#neighbor

• OSPF - OSPFv3 authentication

  #ospf#ospfv3#ipv6#authentication#security#ipsec

• OSPF - Propagation of routes between areas

  #ospf#propagation#routes#areas#non-backbone#backbone

• OSPF - Stuck in ATTEMPT neighbor state

  #ospf#neighbor#state#attempt#stuck

• OSPF - Stuck in ExStart or Exchange states

  #ospf#adjacency#exstart#exchange#state#stuck

• OSPF - Type 1 LSA

  #ospf#type1#lsa#link-type

• OSPF - Type 5 LSA filtering on an ASBR

  #ospf#type5#filtering#lsa#asbr

• OSPF - Update pacing timers

  #ospf#update#pacing#timers

• OSPF - capablity vrf-lite

  #ospf

• OSPF - control plane vs data plane loops

  #ospf#loop#convergene#control-plane#data-plane

• OSPF - default-information originate always command

  #ospf#default-information-originate#default#originate#default-route#always

• OSPF - distance command

  #ospf#distance#administrative#administrative-distance

• OSPF - distribute-list filtering

  #ospf#distribute-list#filtering

• OSPF - manual neighbor configuration

  #ospf#neighbor#manual

• OSPF - non-zero Forwarding Address example

  #ospf#forwarding#forwarding-address

• OSPF - point-to-multipoint network type

  #ospf#network-type#point-to-multipoint

• OSPF - route summarization

  #ospf#summarization#abr

• OSPF - summary-address nssa-only on an ABR

  #ospf#nssa#p-bit

• OSPF - what triggers a DR-BDR election

  #ospf#dr#bdr#election#trigger

• OSPF ABR Type 3 LSA filtering using access lists

  #ospf#lsa#filtering#prefix-lists#acl

• OSPF ABR and Loop Prevention

  #ospf#loop-prevention

• OSPF Advertising Networks using Redistribution vs Network Commands

  #ospf#network#redistribution

• OSPF Authentication for v2 and v3

  #ospf#authentication#ospfv2#ospfv3

• OSPF BDR to DR Transition Time

  #ospf#bdr#dr#transition#time

• OSPF DR BDR election and neighbor adjacencies

  #ospf#dr#bdr#neighbor

• OSPF DR BDR election criteria

  #ospf#dr#bdr#election

• OSPF DR BDR election process

  #ospf#dr#bdr#election

• OSPF Database Exchange Process Master Slave Election

  #ospf#master/slave

• OSPF Design - When to create new instance

  #ospf#design#remote#instance

• OSPF Determining which LSA is newer

  #ospf#lsa#lsa-flooding#age#lsdb

• OSPF Discontiguous Area 0

  #ospf#area#discontiguous

• OSPF Do Not Age (DNA) Flag

  #ospf#dna#flag#lsdp#aging

• OSPF E1 E2 N1 N2 routes

  #ospf#stub

• OSPF Forwarding Address

  #ospf#lsa#forwarding-address

• OSPF Hello packets unicast and multicast

  #ospf#hello#unicast#multicast

• OSPF IP Unnumbered

  #ospf

• OSPF IS-IS comparison

  #ospf#is-is#comparison

• OSPF Incremental SPF and receipt of LSAs

  #ospf#incremental#spf#spt

• OSPF LSA Persistence with DNA flag

  #ospf#lsa#dna#flag#persistence#lsdb#virtual-link

• OSPF LSA Recursion

  #ospf#lsa#recursion

• OSPF LSA Sequence Numbers

  #ospf#lsa#sequence#number

• OSPF LSA Types

  #ospf#lsa

• OSPF NSSA ABR advertises default route

  #ospf#nssa#abr#default-route#default-information-originate

• OSPF NSSAs, Totally NSSAs and Default Routes

  #ospf#nssa#totally-nssa#default-route

• OSPF Neighbor Adjacency works with Network Type Mismatch

  #ospf#network-type#type#mismatch

• OSPF Network Type in VXLAN the Underlay

  #ospf#network-type#vxlan#underlay#point-to-point

• OSPF Not So Stubby Area NSSA

  #ospf#nssa

• OSPF Packet Types and Their Transmission Methods

  #ospf#messages#packet#types#unicast#multicast

• OSPF Path selection

  #ospf#path-selection

• OSPF Prefix Suppression Considerations

  #ospf#prefix#suppression#transit#dr

• OSPF Route Filtering

  #ospf#route#filtering#lsa#abr#asbr#distribute-list#filter-list#lsdb#spf

• OSPF Route Preference Intra-Area vs Inter-Area

  #ospf#path-selection#intra-area#inter-area

• OSPF Routing Bit

  #ospf#routing-bit

• OSPF SPF Scheduling and throttling timers

  #ospf#spf#scheduling#throttling#timers

• OSPF Stub Area vs Totally Stub Area

  #ospf#stub#totally-stub#area#lsa

• OSPF Stub areas allowed LSAs

  #ospf#stub#lsa

• OSPF Summarization Restrictions Within an Area

  #ospf#summarization#intra-area

• OSPF TTL Security Check

  #ospf#ttl#security

• OSPF Troubleshooting

  #ospf#troubleshooting

• OSPF Type 10 LSA

  #ospf#type10#lsa#opaque

• OSPF Type 3 LSA

  #ospf#lsa#type3

• OSPF Type 4 LSA

  #ospf#type4#lsa

• OSPF Type 5 LSA

  #ospf#lsa#type5

• OSPF Understanding LSA Aging and Refreshing

  #ospf#lsa#aging#refreshing

• OSPF Virtual Link Network Type Considerations

  #ospf#virtual-link#network-type

• OSPF Why it is not suitable for use on the Internet

  #ospf#routing#internet

• OSPF advertising loopback network

  #ospf#loopback

• OSPF area inactive

  #ospf#inactive

• OSPF area notation

  #ospf#dotted-decimal#decimal#binary#area

• OSPF area type mismatch

  #ospf#stub#type

• OSPF backbone area 0

  #ospf#backbone-area#backbone

• OSPF default metric values

  #ospf#metric

• OSPF design - when to create a new area

  #ospf#design#area

• OSPF does not redistribute default route

  #ospf#redistribution#default-route

• OSPF downheap LSA

  #ospf#lsa#downheap

• OSPF duplicate router IDs

  #ospf#router-id#duplicate

• OSPF extent of reconvergence process

  #ospf#reconvergence#spf#area

• OSPF immediate hello packet

  #ospf#hello#timer

• OSPF in a GRE multipoint environment

  #ospf#gre#multipoint#dmvpn

• OSPF loop prevention

  #ospf#loop-prevention

• OSPF message options field

  #ospf#hello#options#fields#messages

• OSPF metric sum of outgoing interface costs

  #ospf#metric#cost

• OSPF modifying the router ID

  #ospf#router-id#modify

• OSPF network command

  #ospf#network

• OSPF network types

  #ospf#network-type

• OSPF non directly connected neighbor adjacencies

  #ospf#neighbor#adjacency

• OSPF over VXLAN L2 VNI Considerations

  #vxlan#layer2#vni#ospf

• OSPF packet types

  #ospf#packet#types#messages

• OSPF point to point network type for Ethernet

  #ospf#point-to-point#network-type#ethernet

• OSPF requirements for forming adjacency

  #ospf#adjacency#neighbor

• OSPF router ID in an IPv6 environment

  #ospf#ospfv3#router-id#ipv6

• OSPF sham-link cost

  #ospf#sham-link#metric#cost

• OSPF sham-link

  #ospf#sham-link#mpls

• OSPF virtual link and ABRs

  #ospf#virtual-link#abr

• OSPF where do you configure a virtual link

  #ospf#virtual-link#abr

• OSPF why is a backbone area 0 necessary

  #ospf#backbone-area#backbone

• OSPF within what area is an OSPF router considered to be

  #ospf#area#abr

• OSPF

  #ospf

• OSPFv2 and OSPFv3 comparison

  #ospf#v2#v3#comparison

• OSPFv3 - router ospfv3 command

  #ospf#ospfv3#router#commands

• OSPFv3 Prefix Information Separation

  #ospf#ospfv3#spf#lsa#link-state#lsa-type9

• OSPFv3 instance ID

  #ospf#ospfv3#instance-id

• Route-map matching OSPF router ID

  #route-map#match#ospf#router-id

• Routing - Using the Null0 interface to prevent routing loops

  #routing#null0#loop#ospf

• VRF capability vrf-lite command

  #ospf#bgp#mpls#vrf#ce#pe