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Upgrading Switch Interface Boards

The JUNOS software does not support mixed mode operation of switch interface boards (SIBs). To successfully upgrade 1.0 SIBs to 2.0 SIBs in a TX Matrix environment, you must force all newly installed 2.0 SIBs to operate in 1.0 mode until the upgrade is complete.

To configure the TX Matrix to support a SIB upgrade, include the fabric upgrade-mode statement at the [edit chassis] hierarchy level and commit the changes to update the configuration. Configuration changes that you commit on the TX Matrix platform are propagated to all T640 routing nodes.



[edit chassis]
user@host# set chassis fabric upgrade-mode

user@host# commit

The fabric upgrade-mode statement instructs the newly installed 2.0 boards to operate in 1.0 mode. When all 1.0 boards have been replaced by 2.0 boards, remove the fabric upgrade-mode statement from the configuration hierarchy, and commit the changes again.



[edit chassis]
user@host# delete chassis fabric upgrade-mode

user@host# commit

Use the request chassis sib (offline | online) command sequence to power cycle the newly installed 2.0 SIBs.



user@host> request chassis sib offline slot
slot-number

user@host> request chassis sib online slot
slot-number

As the system discovers each new board, the 2.0 ASIC enables 2.0 features, and the upgrade is complete.

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