Redistribution – Cisco CCNA || Guia de Estudo

Resumo de comandos Show para Integrated IS-IS – BSCISummary of Show commands for Integrated IS-IS – BSCI

Olá Pessoal,

Prosseguindo a série de Comandos Show, apresento-lhes para o protocolo IS-IS.

Este protocolo é bastante diferente da maioria, pois se baseia no endereçamento OSI. Numa primeira análise parece ser complicado, mas entendendo a teoria por trás do protocolo fica tudo descomplicado.

Segue abaixo.

COMANDO	RELACIONADO A	RESULTADO
show clns	IS-IS – Geral	Apresenta resumo, contêm: número de interfaces que está rodando, NET address e timers.
show clns neighbors	IS-IS – Neighbors	Resumo dos vizinhos. Contêm: ID do router remoto, interface, SNPA (endereço da camada de enlace), estado, holdtime e tipo de adjacência (Level-1, Level-2).
show clns neighbors detail	IS-IS – Neighbors	Apresenta detalhes dos vizinhos. Além das informações anteriores apresenta ainda: IP address, uptime e área (extraído do NET).
show clns route	IS-IS – Routes	Apresenta todos os NSAP (Network Service Access Point) é possível rotear dados.
show isis topology [..]	IS-IS – Routes	Apresenta uma lista de caminhos para todos os routers dentro do domínio de roteamento. Pode-se passar parâmetros para filtrar (apenas Level-1, por exemplo.)
show isis database [..]	IS-IS – LSPs	Apresenta cada uma das LSPs na base de dados. Contêm informações como: router que gerou a LSP (LSPID), sequence numbers, checksum, holdtime e bits para controle. Pode-se passar parâmetros para filtrar (apenas Level-1, por exemplo.)
show isis spf-log	IS-IS – SPF	Apresenta informações pertinentes a execução do algoritmo SPF. Se houverem muitas execuções suspeite de problemas de configuração.

OUTPUTS:

R4#show clns Global CLNS Information: 3 Interfaces Enabled for CLNS NET: 49.0020.0000.0000.000b.00 Configuration Timer: 60, Default Holding Timer: 300, Packet Lifetime 64 ERPDU's requested on locally generated packets Running IS-IS in IP-only mode (CLNS forwarding not allowed)

R4#show clns neighbors

System Id Interface SNPA State Holdtime Type Protocol R3 Se1/0 *HDLC* Up 28 L2 IS-IS R5 Se1/1 *HDLC* Up 25 L2 IS-IS

R4#show clns neighbors detail

System Id Interface SNPA State Holdtime Type Protocol R3 Se1/0 *HDLC* Up 25 L2 IS-IS Area Address(es): 49.0020 IP Address(es): 10.100.0.1* Uptime: 00:42:23 NSF capable R5 Se1/1 *HDLC* Up 23 L2 IS-IS Area Address(es): 49.0030 IP Address(es): 10.100.0.6* Uptime: 00:42:23 NSF capable

R4#show clns route Codes: C - connected, S - static, d - DecnetIV I - ISO-IGRP, i - IS-IS, e - ES-IS B - BGP, b - eBGP-neighbor

C 49.0020.0000.0000.000b.00 [1/0], Local IS-IS NET C 49.0020 [2/0], Local IS-IS Area

R3#show isis topology ? WORD Hostname or NSAP of a router l1 Paths to all level-1 routers in the area l2 Paths to all level-2 routers in the domain level-1 Paths to all level-1 routers in the area level-2 Paths to all level-2 routers in the domain | Output modifiers

R3#show isis topology

IS-IS paths to level-1 routers System Id Metric Next-Hop Interface SNPA R3 --
IS-IS paths to level-2 routers System Id Metric Next-Hop Interface SNPA R3 -- R4 5 R4 Se2/0 *HDLC* R5 15 R4 Se2/0 *HDLC*

R3#show isis database ? WORD LSPID in the form of xxxx.xxxx.xxxx.xx-xx or name.xx-xx detail Detailed link state database information l1 IS-IS Level-1 routing link state database l2 IS-IS Level-2 routing link state database level-1 IS-IS Level-1 routing link state database level-2 IS-IS Level-2 routing link state database verbose Verbose database information | Output modifiers

R3#show isis database

IS-IS Level-1 Link State Database: LSPID LSP Seq Num LSP Checksum LSP Holdtime ATT/P/OL R3.00-00 * 0x00000005 0xB7E2 1057 1/0/0 IS-IS Level-2 Link State Database: LSPID LSP Seq Num LSP Checksum LSP Holdtime ATT/P/OL R3.00-00 * 0x00000006 0x4207 1005 0/0/0 R4.00-00 0x00000005 0x9CAF 942 0/0/0 R5.00-00 0x00000005 0x63ED 795 0/0/0

R3#show isis spf-log

level 1 SPF log When Duration Nodes Count First trigger LSP Triggers 00:43:43 0 1 4 R3.00-00 PERIODIC RTCLEARED NEWMETRI C NEWLSP 00:43:27 0 1 2 R3.00-00 ATTACHFLAG LSPHEADER 00:28:52 0 1 1 PERIODIC 00:13:52 0 1 1 PERIODIC

level 2 SPF log When Duration Nodes Count First trigger LSP Triggers 00:43:44 0 1 4 R3.00-00 PERIODIC RTCLEARED NEWMETRI C NEWLSP 00:43:34 8 3 4 R3.00-00 NEWADJ LSPHEADER TLVCONTENT 00:28:54 4 3 1 PERIODIC 00:13:53 4 3 1 PERIODIC

Um abração,

Maurício Bento Ghem.Hello Guys,

Continuing the series of commands Show, presenting them to the IS-IS protocol.

This protocol is quite different from most because it is based on the OSI address. At first sight appears to be complicated, but understanding the theory behind the protocol is all uncomplicated.

Below.

COMMAND	A RELATED	RESULT
show clns	IS-IS – General	Displays summary, include: number of interfaces that are running, NET timers and address.
show clns neighbors	IS-IS – Neighbors	Overview of neighbors. Include: remote router ID, interface, SNPA (link-layer address), status, and type of adjacency holdtime (Level-1, Level-2).
show clns neighbors detail	IS-IS – Neighbors	Presents details of the neighbors. Besides the above information still shows: IP address, uptime and area (from the NET).
show clns route	IS-IS – Routes	Displays all NSAP (Network Service Access Point) you can route data.
show isis topology [..]	IS-IS – Routes	Displays a list of paths to all routers within the area of routing. You can pass parameters to filter (only Level-1, for example.)
show isis database [..]	IS-IS – LSPs	Displays each of the LSPs in the database. Contain information such as router that generated the LSP (LSPID), sequence numbers, checksum, holdtime and bits for control. You can pass parameters to filter (only Level-1, for example.)
show isis spf-log	IS-IS – SPF	Presents relevant information to the application of SPF algorithm. If there are many executions of suspected problems with configuration.

OUTPUTS:

R4#show clns Global CLNS Information: 3 Interfaces Enabled for CLNS NET: 49.0020.0000.0000.000b.00 Configuration Timer: 60, Default Holding Timer: 300, Packet Lifetime 64 ERPDU's requested on locally generated packets Running IS-IS in IP-only mode (CLNS forwarding not allowed)

R4#show clns neighbors

System Id Interface SNPA State Holdtime Type Protocol R3 Se1/0 *HDLC* Up 28 L2 IS-IS R5 Se1/1 *HDLC* Up 25 L2 IS-IS

R4#show clns neighbors detail

System Id Interface SNPA State Holdtime Type Protocol R3 Se1/0 *HDLC* Up 25 L2 IS-IS Area Address(es): 49.0020 IP Address(es): 10.100.0.1* Uptime: 00:42:23 NSF capable R5 Se1/1 *HDLC* Up 23 L2 IS-IS Area Address(es): 49.0030 IP Address(es): 10.100.0.6* Uptime: 00:42:23 NSF capable

R4#show clns route Codes: C - connected, S - static, d - DecnetIV I - ISO-IGRP, i - IS-IS, e - ES-IS B - BGP, b - eBGP-neighbor

C 49.0020.0000.0000.000b.00 [1/0], Local IS-IS NET C 49.0020 [2/0], Local IS-IS Area

R3#show isis topology ? WORD Hostname or NSAP of a router l1 Paths to all level-1 routers in the area l2 Paths to all level-2 routers in the domain level-1 Paths to all level-1 routers in the area level-2 Paths to all level-2 routers in the domain | Output modifiers

R3#show isis topology

IS-IS paths to level-1 routers System Id Metric Next-Hop Interface SNPA R3 --

IS-IS paths to level-2 routers
System Id Metric Next-Hop Interface SNPA
R3 —
R4 5 R4 SE2 / 0 * HDLC *
R5 15 R4 SE2 / 0 * HDLC *

R3#show isis database ? WORD LSPID in the form of xxxx.xxxx.xxxx.xx-xx or name.xx-xx detail Detailed link state database information l1 IS-IS Level-1 routing link state database l2 IS-IS Level-2 routing link state database level-1 IS-IS Level-1 routing link state database level-2 IS-IS Level-2 routing link state database verbose Verbose database information | Output modifiers

R3#show isis database

IS-IS Level-1 Link State Database: LSPID LSP Seq Num LSP Checksum LSP Holdtime ATT/P/OL R3.00-00 * 0x00000005 0xB7E2 1057 1/0/0 IS-IS Level-2 Link State Database: LSPID LSP Seq Num LSP Checksum LSP Holdtime ATT/P/OL R3.00-00 * 0x00000006 0x4207 1005 0/0/0 R4.00-00 0x00000005 0x9CAF 942 0/0/0 R5.00-00 0x00000005 0x63ED 795 0/0/0 1/0/0 IS-IS Level-1 Link State Database: LSPID LSP Seq Num LSP Checksum LSP Holdtime ATT/P/OL R3.00-00 * 0x00000005 0xB7E2 1057 1/0/0 IS-IS Level-2 Link State Database: LSPID LSP Seq Num LSP Checksum LSP Holdtime ATT/P/OL R3.00-00 * 0x00000006 0x4207 1005 0/0/0 R4.00-00 0x00000005 0x9CAF 942 0/0/0 R5.00-00 0x00000005 0x63ED 795 0/0/0 0/0/0 IS-IS Level-1 Link State Database: LSPID LSP Seq Num LSP Checksum LSP Holdtime ATT/P/OL R3.00-00 * 0x00000005 0xB7E2 1057 1/0/0 IS-IS Level-2 Link State Database: LSPID LSP Seq Num LSP Checksum LSP Holdtime ATT/P/OL R3.00-00 * 0x00000006 0x4207 1005 0/0/0 R4.00-00 0x00000005 0x9CAF 942 0/0/0 R5.00-00 0x00000005 0x63ED 795 0/0/0 0/0/0 IS-IS Level-1 Link State Database: LSPID LSP Seq Num LSP Checksum LSP Holdtime ATT/P/OL R3.00-00 * 0x00000005 0xB7E2 1057 1/0/0 IS-IS Level-2 Link State Database: LSPID LSP Seq Num LSP Checksum LSP Holdtime ATT/P/OL R3.00-00 * 0x00000006 0x4207 1005 0/0/0 R4.00-00 0x00000005 0x9CAF 942 0/0/0 R5.00-00 0x00000005 0x63ED 795 0/0/0 0/0/0 IS-IS Level-1 Link State Database: LSPID LSP Seq Num LSP Checksum LSP Holdtime ATT/P/OL R3.00-00 * 0x00000005 0xB7E2 1057 1/0/0 IS-IS Level-2 Link State Database: LSPID LSP Seq Num LSP Checksum LSP Holdtime ATT/P/OL R3.00-00 * 0x00000006 0x4207 1005 0/0/0 R4.00-00 0x00000005 0x9CAF 942 0/0/0 R5.00-00 0x00000005 0x63ED 795 0/0/0

R3#show isis spf-log

level 1 SPF log When Duration Nodes Count First trigger LSP Triggers 00:43:43 0 1 4 R3.00-00 PERIODIC RTCLEARED NEWMETRI C NEWLSP 00:43:27 0 1 2 R3.00-00 ATTACHFLAG LSPHEADER 00:28:52 0 1 1 PERIODIC 00:13:52 0 1 1 PERIODIC

level 2 SPF log When Duration Nodes Count First trigger LSP Triggers 00:43:44 0 1 4 R3.00-00 PERIODIC RTCLEARED NEWMETRI C NEWLSP 00:43:34 8 3 4 R3.00-00 NEWADJ LSPHEADER TLVCONTENT 00:28:54 4 3 1 PERIODIC 00:13:53 4 3 1 PERIODIC

A Abrasive,

Maurício Bento Ghem.

Resumo de Comandos Show para OSPF – BSCISummary of Show Commands for OSPF – BSCI

Olá Pessoal,

Mais um resumo da série de comandos show, agora para o protocolo OSPF com foco na prova BSCI.

Este resumo foi feito baseado no lab publicado anteriormente: Laboratório OSPF e IS-IS com Redistribution bidirecional.

Segue abaixo um resumo de cada comando. Cada um deles possui um link para sua saída completa.

COMANDO	RELACIONADO A	RESULTADO
Show ip ospf [process-id]	OSPF – Geral	Apresenta detalhes de configuração OSPF. Apresenta informações como: Router ID, timers, última execução do algoritmo SPF e estatísticas.
show ip ospf database [..]	OSPF – LSAs	Apresenta informações de cada tipo de LSA. Passando o parâmetro do tipo são apresentadas mais informações detalhadas sobre cada uma.
show ip ospf border-routers	OSPF – ABR/ASBR	Apresenta os ABR e ASBR. Detalhes como: RouterID, interface conectada e área aparecem neste comando.
show ip ospf neighbor [detail]	OSPF – Neighbors	Apresenta um resumo e status da adjacência com os vizinhos. Este comando apresenta informações como: ID do router vizinho, estado (DR,BDR..), dead time (tempo até a rota se extinguir, ou receber um novo hello), endereço IP do vizinho e interface local do Router no qual se encontra este vizinho.
show ip ospf interface brief	OSPF – Resumo	Apresenta um resumo do OSPF em cada interface na qual está rodando. Mostra: interface, process ID, área, IP e máscara, custo, estado (DR/BDR…).
show ip ospf virtual-links	OSPF – Virtual-Links	Apresenta (quando aplicável) os virtual-links e suas estatísticas. Informações contidas: Timers, Router ID, transit Area, estado da adjacência.
show ip route	OSPF – Routes	Para ilustrar o roteador que está redistribuindo as rotas, é apresentado o comando show ip route que apresenta ambas rotas do protocolo OSPF e IS-IS (e a rota default aprendida pelo IS-IS).

Outputs

R3#show ip ospf ? <1-65535> Process ID number border-routers Border and Boundary Router Information database Database summary flood-list Link state flood list interface Interface information mpls MPLS related information neighbor Neighbor list request-list Link state request list retransmission-list Link state retransmission list sham-links Sham link information summary-address Summary-address redistribution Information virtual-links Virtual link information | Output modifiers

R3#show ip ospf 1 Routing Process "ospf 1" with ID 10.100.0.1 Supports only single TOS(TOS0) routes Supports opaque LSA Supports Link-local Signaling (LLS) It is an autonomous system boundary router Redistributing External Routes from, isis with metric mapped to 120, includes subnets in redistribution Initial SPF schedule delay 5000 msecs Minimum hold time between two consecutive SPFs 10000 msecs Maximum wait time between two consecutive SPFs 10000 msecs Minimum LSA interval 5 secs. Minimum LSA arrival 1 secs LSA group pacing timer 240 secs Interface flood pacing timer 33 msecs Retransmission pacing timer 66 msecs Number of external LSA 0. Checksum Sum 0x000000 Number of opaque AS LSA 0. Checksum Sum 0x000000 Number of DCbitless external and opaque AS LSA 0 Number of DoNotAge external and opaque AS LSA 0 Number of areas in this router is 1. 0 normal 0 stub 1 nssa External flood list length 0 Area 3 Number of interfaces in this area is 1 It is a NSSA area generates NSSA default route with cost 1 Area has no authentication SPF algorithm last executed 00:36:04.468 ago SPF algorithm executed 4 times Area ranges are 10.3.0.0/16 Passive Advertise Number of LSA 8. Checksum Sum 0x041817 Number of opaque link LSA 0. Checksum Sum 0x000000 Number of DCbitless LSA 0 Number of indication LSA 0 Number of DoNotAge LSA 0 Flood list length 0

R3#show ip ospf database ? adv-router Advertising Router link states asbr-summary ASBR summary link states database-summary Summary of database external External link states network Network link states nssa-external NSSA External link states opaque-area Opaque Area link states opaque-as Opaque AS link states opaque-link Opaque Link-Local link states router Router link states self-originate Self-originated link states summary Network summary link states | Output modifiers

R3#show ip ospf database

OSPF Router with ID (10.100.0.1) (Process ID 1)

Router Link States (Area 3)

Link ID ADV Router Age Seq# Checksum Link count 10.100.0.1 10.100.0.1 220 0x80000003 0x00E547 1 10.255.0.0 10.255.0.0 225 0x80000003 0x00C235 1

Net Link States (Area 3)
Link ID ADV Router Age Seq# Checksum 10.3.0.1 10.255.0.0 225 0x80000002 0x009D07 Summary Net Link States (Area 3) Link ID ADV Router Age Seq# Checksum 10.0.0.0 10.255.0.0 225 0x80000002 0x005AC6 10.1.0.0 10.255.0.0 225 0x80000002 0x0058C6 10.2.0.0 10.255.0.0 225 0x80000002 0x0056C6 Type-7 AS External Link States (Area 3)
Link ID ADV Router Age Seq# Checksum Tag 0.0.0.0 10.100.0.1 220 0x80000002 0x001C2B 0 10.100.0.0 10.100.0.1 223 0x80000002 0x00AD17 0

R0#show ip ospf border-routers

OSPF Process 1 internal Routing Table

Codes: i - Intra-area route, I - Inter-area route

i 10.255.2.2 [2] via 10.0.0.2, FastEthernet0/0, ABR, Area 0, SPF 8 i 10.100.0.1 [1] via 10.3.0.2, FastEthernet1/0, ASBR, Area 3, SPF 6 i 10.255.1.1 [1] via 10.0.0.2, FastEthernet0/0, ABR, Area 0, SPF 8

R0#show ip ospf neighbor

Neighbor ID Pri State Dead Time Address Interface 10.255.1.1 1 FULL/DR 00:00:37 10.0.0.2 FastEthernet0/0 10.100.0.1 1 FULL/BDR 00:00:39 10.3.0.2 FastEthernet1/0

R3#show ip ospf interface FastEthernet1/0 is up, line protocol is up Internet Address 10.3.0.2/30, Area 3 Process ID 1, Router ID 10.100.0.1, Network Type BROADCAST, Cost: 1 Transmit Delay is 1 sec, State BDR, Priority 1 Designated Router (ID) 10.255.0.0, Interface address 10.3.0.1 Backup Designated router (ID) 10.100.0.1, Interface address 10.3.0.2 Timer intervals configured, Hello 10, Dead 40, Wait 40, Retransmit 5 oob-resync timeout 40 Hello due in 00:00:05 Index 1/1, flood queue length 0 Next 0x0(0)/0x0(0) Last flood scan length is 2, maximum is 2 Last flood scan time is 0 msec, maximum is 0 msec Neighbor Count is 1, Adjacent neighbor count is 1 Adjacent with neighbor 10.255.0.0 (Designated Router) Suppress hello for 0 neighbor(s)

R0#show ip ospf interface brief Interface PID Area IP Address/Mask Cost State Nbrs F/C Fa0/0 1 0 10.0.0.1/30 1 BDR 1/1 Fa1/0 1 3 10.3.0.1/30 1 DR 1/1

R2#show ip ospf virtual-links Virtual Link OSPF_VL0 to router 10.255.1.1 is up Run as demand circuit DoNotAge LSA allowed. Transit area 1, via interface FastEthernet0/0, Cost of using 1 Transmit Delay is 1 sec, State POINT_TO_POINT, Timer intervals configured, Hello 10, Dead 40, Wait 40, Retransmit 5 Hello due in 00:00:09 Adjacency State FULL (Hello suppressed) Index 1/2, retransmission queue length 0, number of retransmission 1 First 0x0(0)/0x0(0) Next 0x0(0)/0x0(0) Last retransmission scan length is 1, maximum is 1 Last retransmission scan time is 0 msec, maximum is 0 msec

R3#show ip route Codes: C - connected, S - static, R - RIP, M - mobile, B - BGP D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2 E1 - OSPF external type 1, E2 - OSPF external type 2 i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2 ia - IS-IS inter area, * - candidate default, U - per-user static route o - ODR, P - periodic downloaded static route

Gateway of last resort is 10.100.0.2 to network 0.0.0.0

10.0.0.0/8 is variably subnetted, 9 subnets, 4 masks O IA 10.2.0.0/16 [110/4] via 10.3.0.1, 00:43:28, FastEthernet1/0 C 10.3.0.0/30 is directly connected, FastEthernet1/0 O IA 10.0.0.0/16 [110/2] via 10.3.0.1, 00:43:48, FastEthernet1/0 i su 10.0.0.0/14 [115/84] via 0.0.0.0, Null0 O IA 10.1.0.0/16 [110/3] via 10.3.0.1, 00:43:48, FastEthernet1/0 i L2 10.100.8.0/21 [115/15] via 10.100.0.2, Serial2/0 i L2 10.100.0.4/30 [115/15] via 10.100.0.2, Serial2/0 C 10.100.0.0/30 is directly connected, Serial2/0 O 10.100.0.0/16 is a summary, 00:43:55, Null0 i*L2 0.0.0.0/0 [115/15] via 10.100.0.2, Serial2/0

Um abração pessoal e sucesso.

Maurício Bento Ghem.Hello Guys,

More a summary of the series of commands show, now for the OSPF protocol with focus on the proof BSCI.

This summary was based on previously published lab: Laboratory OSPF and IS-IS with bidirectional Redistribution.

Below is a summary of each command. Each contains a link to its full output.

COMMAND	A RELATED	RESULT
Show ip ospf [process-id]	OSPF – General	Displays details of configuring OSPF. Displays information such as: Router ID, timers, last performance of the SPF algorithm and statistics.
show ip ospf database [..]	OSPF – LSAS	Displays information of each type of LSA. Passing the parameter type is presented more detailed information on each.
show ip ospf border-routers	OSPF – ABR / ASBR	Shows the ABR and ASBR. Details as RouterID, interface connected and appear in this area command.
show ip ospf neighbor [detail]	OSPF – Neighbors	Presents a summary and status of the adjacency with its neighbors. This command displays information such as neighbor router ID, state (DR, BDR ..), dead time (time until the route goes out, or receives a new hello),IP address of the neighbor and the local router interface which is this neighbor.
show ip ospf interface brief	OSPF – Summary	Presents a summary of OSPF on each interface on which it is running.Shows: interface, process ID, area, and IP mask, cost, status (DR / BDR …).
show ip ospf virtual-links	OSPF – Virtual-Links	Displays (if applicable) the virtual-links and statistics. Information contained: Timers, Router ID, Area transit, state of the adjacency.
show ip route	OSPF – Routes	To illustrate that the router is redistributing the routes, is shown the command show ip route shows that both routes of Protocol OSPF and IS-IS (and the default route learned by the IS-IS).

Outputs

R3#show ip ospf ? <1-65535> Process ID number border-routers Border and Boundary Router Information database Database summary flood-list Link state flood list interface Interface information mpls MPLS related information neighbor Neighbor list request-list Link state request list retransmission-list Link state retransmission list sham-links Sham link information summary-address Summary-address redistribution Information virtual-links Virtual link information | Output modifiers

R3#show ip ospf 1 Routing Process “ospf 1? with ID 10.100.0.1 Supports only single TOS(TOS0) routes Supports opaque LSA Supports Link-local Signaling (LLS) It is an autonomous system boundary router Redistributing External Routes from, isis with metric mapped to 120, includes subnets in redistribution Initial SPF schedule delay 5000 msecs Minimum hold time between two consecutive SPFs 10000 msecs Maximum wait time between two consecutive SPFs 10000 msecs Minimum LSA interval 5 secs. Minimum LSA arrival 1 secs LSA group pacing timer 240 secs Interface flood pacing timer 33 msecs Retransmission pacing timer 66 msecs Number of external LSA 0. Checksum Sum 0×000000 Number of opaque AS LSA 0. Checksum Sum 0×000000 Number of DCbitless external and opaque AS LSA 0 Number of DoNotAge external and opaque AS LSA 0 Number of areas in this router is 1. 0 normal 0 stub 1 nssa External flood list length 0 Area 3 Number of interfaces in this area is 1 It is a NSSA area generates NSSA default route with cost 1 Area has no authentication SPF algorithm last executed 00:36:04.468 ago SPF algorithm executed 4 times Area ranges are 10.3.0.0/16 Passive Advertise Number of LSA 8. Checksum Sum 0×041817 Number of opaque link LSA 0. Checksum Sum 0×000000 Number of DCbitless LSA 0 Number of indication LSA 0 Number of DoNotAge LSA 0 Flood list length 0

R3#show ip ospf database ? adv-router Advertising Router link states asbr-summary ASBR summary link states database-summary Summary of database external External link states network Network link states nssa-external NSSA External link states opaque-area Opaque Area link states opaque-as Opaque AS link states opaque-link Opaque Link-Local link states router Router link states self-originate Self-originated link states summary Network summary link states | Output modifiers

R3#show ip ospf database

OSPF Router with ID (10.100.0.1) (Process ID 1)

Router Link States (Area 3)

Link ID ADV Router Age Seq# Checksum Link count 10.100.0.1 10.100.0.1 220 0x80000003 0x00E547 1 10.255.0.0 10.255.0.0 225 0x80000003 0x00C235 1

Net Link States (Area 3)

Link ID ADV Router Age Seq # Checksum
10.3.0.1 10.255.0.0 225 0x80000002 0x009D07

Summary Net Link States (Area 3)

Link ID ADV Router Age Seq # Checksum
10.0.0.0 10.255.0.0 225 0x80000002 0x005AC6
10.1.0.0 10.255.0.0 225 0x80000002 0x0058C6
10.2.0.0 10.255.0.0 225 0x80000002 0x0056C6

Type-7 AS External Link States (Area 3)

Link ID ADV Router Age Seq# Checksum Tag 0.0.0.0 10.100.0.1 220 0x80000002 0x001C2B 0 10.100.0.0 10.100.0.1 223 0x80000002 0x00AD17 0

R0#show ip ospf border-routers

OSPF Process 1 internal Routing Table

Codes: i - Intra-area route, I - Inter-area route

i 10.255.2.2 [2] via 10.0.0.2, FastEthernet0/0, ABR, Area 0, SPF 8 i 10.100.0.1 [1] via 10.3.0.2, FastEthernet1/0, ASBR, Area 3, SPF 6 i 10.255.1.1 [1] via 10.0.0.2, FastEthernet0/0, ABR, Area 0, SPF 8

R0#show ip ospf neighbor

Neighbor ID Pri State Dead Time Address Interface 10.255.1.1 1 FULL/DR 00:00:37 10.0.0.2 FastEthernet0/0 10.100.0.1 1 FULL/BDR 00:00:39 10.3.0.2 FastEthernet1/0

R3#show ip ospf interface FastEthernet1/0 is up, line protocol is up Internet Address 10.3.0.2/30, Area 3 Process ID 1, Router ID 10.100.0.1, Network Type BROADCAST, Cost: 1 Transmit Delay is 1 sec, State BDR, Priority 1 Designated Router (ID) 10.255.0.0, Interface address 10.3.0.1 Backup Designated router (ID) 10.100.0.1, Interface address 10.3.0.2 Timer intervals configured, Hello 10, Dead 40, Wait 40, Retransmit 5 oob-resync timeout 40 Hello due in 00:00:05 Index 1/1, flood queue length 0 Next 0×0(0)/0×0(0) Last flood scan length is 2, maximum is 2 Last flood scan time is 0 msec, maximum is 0 msec Neighbor Count is 1, Adjacent neighbor count is 1 Adjacent with neighbor 10.255.0.0 (Designated Router) Suppress hello for 0 neighbor(s)

R0#show ip ospf interface brief Interface PID Area IP Address/Mask Cost State Nbrs F/C Fa0/0 1 0 10.0.0.1/30 1 BDR 1/1 Fa1/0 1 3 10.3.0.1/30 1 DR 1/1 10.0.0.1/30 R0#show ip ospf interface brief Interface PID Area IP Address/Mask Cost State Nbrs F/C Fa0/0 1 0 10.0.0.1/30 1 BDR 1/1 Fa1/0 1 3 10.3.0.1/30 1 DR 1/1 10.3.0.1/30 R0#show ip ospf interface brief Interface PID Area IP Address/Mask Cost State Nbrs F/C Fa0/0 1 0 10.0.0.1/30 1 BDR 1/1 Fa1/0 1 3 10.3.0.1/30 1 DR 1/1

R2#show ip ospf virtual-links Virtual Link OSPF_VL0 to router 10.255.1.1 is up Run as demand circuit DoNotAge LSA allowed. Transit area 1, via interface FastEthernet0/0, Cost of using 1 Transmit Delay is 1 sec, State POINT_TO_POINT, Timer intervals configured, Hello 10, Dead 40, Wait 40, Retransmit 5 Hello due in 00:00:09 Adjacency State FULL (Hello suppressed) Index 1/2, retransmission queue length 0, number of retransmission 1 First 0×0(0)/0×0(0) Next 0×0(0)/0×0(0) Last retransmission scan length is 1, maximum is 1 Last retransmission scan time is 0 msec, maximum is 0 msec

R3#show ip route Codes: C - connected, S - static, R - RIP, M - mobile, B - BGP D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2 E1 - OSPF external type 1, E2 - OSPF external type 2 i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2 ia - IS-IS inter area, * - candidate default, U - per-user static route o - ODR, P - periodic downloaded static route

Gateway of last resort is 10.100.0.2 to network 0.0.0.0

10.0.0.0/8 is variably subnetted, 9 subnets, 4 masks O IA 10.2.0.0/16 [110/4] via 10.3.0.1, 00:43:28, FastEthernet1/0 C 10.3.0.0/30 is directly connected, FastEthernet1/0 O IA 10.0.0.0/16 [110/2] via 10.3.0.1, 00:43:48, FastEthernet1/0 i su 10.0.0.0/14 [115/84] via 0.0.0.0, Null0 O IA 10.1.0.0/16 [110/3] via 10.3.0.1, 00:43:48, FastEthernet1/0 i L2 10.100.8.0/21 [115/15] via 10.100.0.2, Serial2/0 i L2 10.100.0.4/30 [115/15] via 10.100.0.2, Serial2/0 C 10.100.0.0/30 is directly connected, Serial2/0 O 10.100.0.0/16 is a summary, 00:43:55, Null0 i*L2 0.0.0.0/0 [115/15] via 10.100.0.2, Serial2/0

Abrasive and a personal success.

Maurício Bento Ghem.

Laboratório OSPF e IS-IS com Redistribution bidirecionalLaboratory OSPF and IS-IS with bidirectional Redistribution

Olá Pessoal,

É com muito orgulho que vos apresento um laboratório muito interessante, seguindo o título original do Lab:

Laboratório OSPF e IS-IS com redistribution bidirecional e NSSA area com default-route, ilustrado abaixo.

Com este lab foi possível adquirir inúmeros conhecimentos, principalmente de redistribuição de rotas entre protocolos.

Após bastante tempo tentando implementar a maneira ótima para a redistribuição, ou seja, redistribuir apenas as summary routes (foi utilizado endereçamento hierárquico), finalmente consegui e lhes disponibilizo o laboratório. Reparem que foi utilizada uma área NSSA (not-so-stubby area) do OSPF para complicar um pouco mais a situação.

Como todos os laboratórios publicados por mim, corrijam os caminhos no arquivo .net e peguem as IOS correspondentes no HD do blog, pasta IOS. Lembrem-se de que para realizar o laboratório desde o início, ou seja, configurar cada um dos dispositivos eu disponibilizo a configuração base nos arquivos TXT, sendo que a configuração final está nos arquivos .cfg, na subpasta.

Também, seguem as mesmas recomendações de aprendizado. Usem e abusem de comandos show e debug, modifiquem as configurações, derrubem os links para verificar a convergência. Utilizem este Lab para aprender.

Segue abaixo o link para download do laboratório:

Laboratorio OSPF e ISIS com Redistribution bidirecional

Qualquer dúvida, sintam-se a vontade para entrar em contato comigo.

Um abração pessoal,

Maurício Bento Ghem.Hello Guys,

It is with great pride that I present a very interesting laboratory, following the original title of the Lab:

Laboratory OSPF and IS-IS redistribution with bidirectional and NSSA area with default-route, shown below.

With this lab was possible to acquire many skills, especially the redistribution of routes between protocols.

After some time trying to implement the optimal way for redistribution, or redistribute only the summary routes (hierarchical addressing was used), and finally it offers them the laboratory. Repair an area that was used ÑßÅ (not-so-stubby area) of OSPF to complicate the situation a little more.

Like all laboratories published by me, correct the paths in the. Net and grab the corresponding IOS in HD blog, IOS folder.Remember that to perform the laboratory from the start, or configure each device I provided the basic configuration files in TXT, and the final configuration is in the archives. Cfg in subfolder.

Also, follow the same recommendations for learning. Use and abuse of show and debug commands, modify the settings, put the links to check the convergence. Use this lab to learn.

Here is the link to download the laboratory:

Laboratory ISIS and OSPF Redistribution with bidirectional

No doubt, to feel the desire to contact me.

A Abrasive staff,

Maurício Bento Ghem.