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09-01-2010 10:08 AM
09-01-2010 10:08 AM
C7000 enclosure with Flex-10 Networking
In the management port logging we are seeing "Network packet flooding detected" - would this impact the flex 10 connectors? Or are these two network connectors totally separate? What is the optimal settings for speed/duplex on the management port - Does the Cisco switch have to match settings?
We do see from time to time some request timeout during pings back to the host. This is connected via fiber back to a Cisco 6513 - which show no packet loss.
Any help would be appreciated?
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09-01-2010 12:06 PM
09-01-2010 12:06 PM
Re: C7000 enclosure with Flex-10 Networking
This could affect connectivity to the OA, ILO's or the management interface of Virtual Connect Manager.
This doesn't mean that network packet flooding is occurring where the VC uplinks connect to your network.
The bladesystem management path is architected completely separate from the data path.
Now, if (and only if) your OA/ILO port connects to the same VLAN as what exists on your VC uplinks then it is possible that the network packet flooding that the OA is detecting on its network is severe enough to impact the VC data path (because they are on the same VLAN)
best setting for OA/ILO port and the switch it connects to is Auto/Auto. Settings need to match on both sides or a duplex mismatch could occur...
hope this helps
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09-01-2010 06:47 PM
09-01-2010 06:47 PM
Re: C7000 enclosure with Flex-10 Networking
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09-02-2010 07:23 AM
09-02-2010 07:23 AM
Re: C7000 enclosure with Flex-10 Networking
my recommendation would be to run a protocol analyzer on your VLAN and check for excessive multicast/broadcast or unicast flooding. If you see something unexpected, look for the source and correct that which should improve network performance overall.
If the traffic you see is expected/normal for your environment than the OA message may just be a little too sensitive.
not sure where this might be documented... maybe in the OA user guide?
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09-02-2010 11:22 AM
09-02-2010 11:22 AM
Re: C7000 enclosure with Flex-10 Networking
If you also see ping drops back to the host IPs (ie the LOMs etc on the blades themselves) that suggests you have a rather busy network indeed and you may want to start diagnosing that - you may have some number of nodes spewing packets into the network...