Wireshark-users: Re: [Wireshark-users] FCIP issues with SAN replication
Gerald, We do have window scaling
enabled, but it’s hard set at 32kb per HP’s recommendations.
I will recommend we “supersize” it when we discuss this issue
again. Bill, I’m starting to see the
pattern here, I’ll recommend to HP we set the window as large as it’ll
go. They’re following some chart they have in the user guide based
on CIR and latency, that tells them what window size and scaling factor to
set. They’re magic formula has indicated we should be using 32kb,
but I’ve performed tests with iperf and seen with larger windows comes
greater data rates. I suspect this is not the issue though, as it still
fails with high TCP timer expired errors. Martin, The near side is
10.244.249.31/32 to the far side is 10.245.249.31/32. I think IP
addressing is fine; otherwise, we would have worse problems where replication would
not even start. We’re following HP’s
recommendations and so far they’ve wanted to set the window at
32kb. I agree with you it should be as large as possible, but for now,
this is HP’s show. I will recommend a larger window next time we
discuss the issue with them. I agree there is a configuration
problem or timeout that needs to be adjusted or possibly a malfunctioning NIC
in their FC gateways. Now the update: I discovered if I disable the
FCP decode, Wireshark does decode it correctly as FCIP. Mel Chandler Network Engineering The First American Corporation ****************************************************************************************** This message may contain confidential or proprietary information intended only for the use of the addressee(s) named above or may contain information that is legally privileged. If you are not the intended addressee, or the person responsible for delivering it to the intended addressee, you are hereby notified that reading, disseminating, distributing or copying this message is strictly prohibited. If you have received this message by mistake, please immediately notify us by replying to the message and delete the original message and any copies immediately thereafter. Thank you. ****************************************************************************************** FACLD ~ |
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