Is VSS Applicable for single ethernet connected servers

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Sep 23rd, 2009
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It appears that as the active supervisor reboots, it take down (disables) all ports in its chassis as it reboots. This causes a outage to all single connected servers to that chassis for the reboot time period. In our case this is a 8 minutes outage.

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iyde Wed, 09/23/2009 - 09:06
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Right.

Also, if the two Cat6500 which make up the VSS system looses the VSL link between them, they end up in dual-active mode and the way that is handled is to shut all interfaces in the previous master switch.

That is why the strong recommendation is _not_ to single-attach anything to a VSS system, so either use dual-attached servers or have your single-attached servers (and everything else) connected to a server access switch which then is uplinked to both chassis in the VSS bundle.

HTH.

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