Introdução
Este documento mostra como executar a recuperação de imagem do access point em um ISR (Integrated Services Router) com um AP802 incorporado. O método descrito aqui baseia-se no fato de que a partição flash do AP802 é diretamente acessível a partir do roteador host. Esta técnica não pode ser usada a partir de um roteador com um AP801 embutido; nessas plataformas, você precisará executar a recuperação de imagem do AP (access point) a partir do console do AP801 (bootloader.) (Como saber se você tem um AP801 ou AP802).
Exemplo de registro CLI do roteador
O exemplo dado abaixo foi executado em um 819HWD executando IOS (Internetwork Operating System) 15.2(4)M5.
Conteúdo da flash do roteador
819HWD#dir all-filesystems
[ ... ]
Directory of flash:1:/
2 -rw- 100041 Aug 1 2014 19:37:46 +00:00 event.log
25 -rw- 215 Sep 15 2014 17:17:38 +00:00 env_vars
4 -rw- 125729 Aug 1 2014 12:29:16 +00:00 event.capwap
5 -rw- 281 Jun 9 2014 23:28:12 +00:00 info
6 -rw- 8216 Sep 15 2014 17:17:50 +00:00 private-multiple-fs
7 drw- 0 Dec 26 2013 19:52:46 +00:00 ap802-rcvk9w8-mx
17 -rw- 3072 Dec 26 2013 20:02:30 +00:00 cpconfig-ap802.cfg
3 -rw- 0 Sep 15 2014 17:18:02 +00:00 config.txt
18 -rw- 5 Jun 25 2014 21:06:00 +00:00 private-config
19 -rw- 64 Jun 24 2014 23:12:10 +00:00 sensord_CSPRNG1
20 -rw- 64 Jun 24 2014 23:21:44 +00:00 sensord_CSPRNG0
21 drw- 0 Jul 31 2014 18:29:32 +00:00 configs
Reformatação da flash do AP
O flash:1: filesystem é a partição usada pelo AP802. Em nosso teste, formataremos esse sistema de arquivos para limpá-lo e, em seguida, reinicializaremos o AP802 para fazer com que ele seja inicializado no carregador de inicialização do AP. (Nota: não reformate a flash do AP a menos que seja necessário - isso é feito aqui para fins ilustrativos.)
819HWD#format flash:1:/
Format operation may take a while. Continue? [confirm]y
Format operation will destroy all data in "flash:1:". Continue? [confirm]y
Format: All system sectors written. OK...
Format: Total sectors in formatted partition: 80801
Format: Total bytes in formatted partition: 41370112
Format: Operation completed successfully.
Format of flash:1: complete
819HWD#service-module wlan-ap 0 reset
Use reset only to recover from shutdown or failed state
AP config will not be saved
Do you want to reset?[confirm]y
Trying to reload Service Module wlan-ap0.
Pause - wait for open files to finish...
819HWD#
*Sep 15 17:28:30.232: %SECONDCORE-5-BOOTSTAGE: ROMMON on 2nd core UP
*Sep 15 17:28:30.248: %SECONDCORE-5-BOOTSTAGE: AP-BOOTLOADER on 2nd core UP
Conectar ao AP802
Conecte-se ao console do AP802 para verificar se a memória flash está vazia.
819HWD#service-module wlan-ap 0 session
Trying 192.168.148.8, 2002 ... Open
Connecting to AP console, enter Ctrl-^ followed by x,
then "disconnect" to return to router prompt
ap: dir flash:
Directory of flash:/
41168896 bytes available (139264 bytes used)
ap:
Ctrl-^x
819HWD#disco
Closing connection to 192.168.148.8 [confirm]y
Copiar o IOS do AP na memória flash do roteador
Copie o tarball do IOS do AP desejado de um servidor TFTP (Trivial File Transfer Protocol) na partição principal da memória flash do roteador. Nesse caso, usamos ap802-k9w7-tar.152-4.JB5.tar, que é o IOS autônomo 15.2(4)JB5. (Consulte o artigo Entendendo as imagens do IOS do ponto de acesso.)
819HWD#copy tftp flash:
Address or name of remote host [192.168.148.1]?
Source filename [/192.168.148.1/ap802-k9w7-tar.152-4.JB5.tar]? ap802-k9w7-tar.152-4.JB5.tar
Destination filename [ap802-k9w7-tar.152-4.JB5.tar]?
Accessing tftp://192.168.148.1/ap802-k9w7-tar.152-4.JB5.tar...
Loading ap802-k9w7-tar.152-4.JB5.tar from 192.168.148.1 (via GigabitEthernet0): !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
[OK - 13834240 bytes]
13834240 bytes copied in 46.368 secs (298357 bytes/sec)
Extrair IOS AP
Desembale o tarball na flash AP (flash:1:), usando o comando archive tar /xtract.
819HWD#archive tar /xtract ap802-k9w7-tar.152-4.JB5.tar flash:1:
extracting info (282 bytes)
ap802-k9w7-mx.152-4.JB5/ (directory)
ap802-k9w7-mx.152-4.JB5/html/ (directory)
[ ... ]
extracting info.ver (282 bytes)
819HWD#dir flash:1:
Directory of flash:1:/
4 -rw- 282 Sep 15 2014 17:31:40 +00:00 info
5 drw- 0 Sep 15 2014 17:31:42 +00:00 ap802-k9w7-mx.152-4.JB5
199 -rw- 282 Sep 15 2014 17:33:38 +00:00 info.ver
41308160 bytes total (26963968 bytes free)
Configurar o AP para inicializar a nova imagem do IOS
Use o console para acessar o carregador de inicialização do AP802 e configure-o para inicializar a imagem do IOS. Observe que a imagem do IOS do AP é normalmente chamada de flash:/platform-featureset-mx.version/platform-featureset-mx-version. Em seguida, inicialize o IOS do AP.
819HWD#service-module wlan-ap 0 session
Trying 192.168.148.8, 2002 ... Open
ap: dir flash:
Directory of flash:/
4 -rw- 282 info
5 drw- 0 ap802-k9w7-mx.152-4.JB5
199 -rw- 282 info.ver
26963968 bytes available (14344192 bytes used)
ap: set BOOT flash:/ap802-k9w7-mx.152-4.JB5/ap802-k9w7-mx.152-4.JB5
ap: reset
Are you sure you want to reset the system (y/n)?y
System resetting...
*Sep 15 17:35:12.758: %SECONDCORE-5-BOOTSTAGE: AP-IOS on 2nd core SAFE FOR RESET
IOS Bootloader - Starting system.
[ ... ]
*Sep 15 17:35:25.329: %SECONDCORE-5-BOOTSTAGE: ROMMON on 2nd core UP
*Sep 15 17:35:25.345: %SECONDCORE-5-BOOTSTAGE: AP-BOOTLOADER on 2nd core UPLoading "flash:/ap802-k9w7-mx.152-4.JB5/ap802-k9w7-mx.152-4.JB5"...###############################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################
File "flash:/ap802-k9w7-mx.152-4.JB5/ap802-k9w7-mx.152-4.JB5" uncompressed and installed, entry point: 0x18003000
[ ... ]
Cisco IOS Software, AP802 Software (AP802-K9W7-M), Version 15.2(4)JB5, RELEASE SOFTWARE (fc1)
[ ... ]
*Sep 15 17:37:29.371: %SECONDCORE-5-BOOTSTAGE: AP-IOS on 2nd core UP
*Sep 15 17:37:37.435: %WLAN_AP_SM-6-UNIFIED_IMAGE: Embedded AP will change boot image to mini-IOS also called LWAPP recovery
Please check router config to ensure connectivity between WLC and AP
Use service-module wlan-ap 0 reload to boot up mini-IOS image on AP
Save the autonomous configuration file with a file name other than
flash:[config.txt] as it will be erased upon AP reload
Press RETURN to get started!
ap>
Ctrl-^x
819HWD#disco
Closing connection to 192.168.148.8 [confirm]y
819HWD#
Limpar o flash do roteador e configurar para autônomo
Agora exclua o tarball da flash do roteador, pois ele não é mais necessário. Aborde também a mensagem "WLAN_AP_SM-6-UNIFIED_IMAGE", que indica que o roteador acha que o AP deve estar executando o IOS leve, então precisamos usar o comando service-module-wlan n bootimage para informar ao roteador que o AP está executando de forma autônoma (ou leve).
819HWD#del flash:/ap802-k9w7-tar.152-4.JB5.tar
Delete filename [ap802-k9w7-tar.152-4.JB5.tar]?
Delete flash:/ap802-k9w7-tar.152-4.JB5.tar? [confirm]
819HWD#conf t
Enter configuration commands, one per line. End with CNTL/Z.
819HWD(config)#service-module wlan-ap 0 bootimage autonomous
819HWD(config)#end
819HWD#wri
Building configuration...[OK]
Como saber se um ISR tem AP801 ou AP802
P: Como saber se um ISR tem um AP801 ou um AP802?
A1. Faça um show version no AP.
A2. http://www.cisco.com/c/en/us/products/routers/800-series-routers/brochure-listing.html > Quadro comparativo do Cisco 800 Series ISR
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