Empilhamento 2960-S com 2960-X

[velmorejunior]

Bom dia pessoal,

Sou iniciante na carreira CISCO, estou estudando para passar na prova CCNA e no meu trabalho me deparei com o seguinte cenário:eu preciso empilhar três switches sendo que dois são 2960-X (novos) e um é 2960-S (1 ano de uso). Conectei os cabos FlexStack de acordo com o How To que você me enviou, porém na hora da eleição, o 2960-S e um dos 2960-X ficaram como master. O resultado do comando show switch eu vejo o 2960-S sozinho e quando coloco o cabo console no 2960X vejo somente os dois novos empilhados. Pergunta: É possível realizar esta pilha com os modelos sendo diferentes? De cara eu vejo que a versão do 2960-S é a 12.2 e a versão do 2960-X é 15.0 isto tem a ver? Estou procurando estas respostas no site da CISCO mas ainda não encontrei.

Conto com a ajuda de vocês

Abraço

Velmore Junior

[Ruben Cocheno]

Velmore,

Verifica se o seguinte link ajuda http://www.cisco.com/c/en/us/products/collateral/switches/catalyst-2960-x-series-switches/white_paper_c11-728327.html

[bersoare]

Velmore,

Voce deve manter a versao de IOS consistente entre os membros do stack.

Isso ocorre pois a versao do protocolo difere entre as releases de IOS.

Segue abaixo:

Stack Protocol Version Compatibility

The stack protocol version has a major version number and a minor version number (for example 1.4, where 1 is the major version number and 4 is the minor version number).

Switches with the same Cisco IOS software version have the same stack protocol version. All features function properly across the stack. These switches with the same software version as the master immediately join the stack.

If an incompatibility exists, a system message describes the cause of the incompatibility on the specific stack members. The master sends the message to all members.

For more information, see the "Major Version Number Incompatibility Among Switches" procedure and the "Minor Version Number Incompatibility Among Switches" procedure.

Major Version Number Incompatibility Among Switches

Switches with different Cisco IOS software versions likely have different stack protocol versions. Switches with different major version numbers are incompatible and cannot exist in the same stack.

Minor Version Number Incompatibility Among Switches

Switches with the same major version number but with a different minor version number as the master are considered partially compatible. When connected to a stack, a partially compatible switch enters version-mismatch mode and cannot join the stack as a fully functioning member. The software detects the mismatched software and tries to upgrade (or downgrade) the switch in version-mismatch mode with the stack image or with a tar file image from the stack flash memory. The software uses the automatic upgrade (auto-upgrade) and the automatic advise (auto-advise) features.

The port LEDs on switches in version-mismatch mode will also stay off. Pressing the Mode button does not change the LED mode.

Resumindo: Atualize os 2960-S para a versao 15.x ou faca o downgrade do 2960-X para a 12.2.

Fonte: http://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst2960/software/release/12-2_53_se/configuration/guide/2960scg/swstack.html#wp1235928