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Gbit Ethernet Flow Control on RN104
Hello Community,
I have a question to my ReadyNAS RN104 running at FW level 6.10.4.
When I look into the network interface settings, there's no information about flow control for Gbit Ethernet adapters. I cannot figure out if flow control is enabled or disabled.
Is there a way to find this out?
I'ld like to disable flow control if it's enabled. Is there a way to disable flow control?
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I searched in this forum but the only thread I found was mentioning as an aside that flow control is enabled by default on a RN104. Please forbear with me if I did not find the right thread.
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Thanks and regards,
Holger
HolgerGT86 wrote:
I cannot figure out if flow control is enabled or disabled.
Is there a way to find this out?
You have to use ssh (ethtool). I see this on my RN102:
root@RN102:~# ethtool eth0 Settings for eth0: Supported ports: [ TP MII ] Supported link modes: 10baseT/Half 10baseT/Full 100baseT/Half 100baseT/Full 1000baseT/Half 1000baseT/Full Supported pause frame use: No Supports auto-negotiation: Yes Advertised link modes: 10baseT/Half 10baseT/Full 100baseT/Half 100baseT/Full 1000baseT/Half 1000baseT/Full Advertised pause frame use: No Advertised auto-negotiation: Yes Link partner advertised link modes: 10baseT/Half 10baseT/Full 100baseT/Half 100baseT/Full 1000baseT/Full Link partner advertised pause frame use: Symmetric Link partner advertised auto-negotiation: Yes Speed: 1000Mb/s Duplex: Full Port: MII PHYAD: 0 Transceiver: external Auto-negotiation: on Supports Wake-on: g Wake-on: d Link detected: yesThis says that pause frames (ethernet flow control) are not supported. FWIW, it is supported (and enabled) on my x86 ReadyNAS.
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HolgerGT86 wrote:
I cannot figure out if flow control is enabled or disabled.
Is there a way to find this out?
You have to use ssh (ethtool). I see this on my RN102:
root@RN102:~# ethtool eth0 Settings for eth0: Supported ports: [ TP MII ] Supported link modes: 10baseT/Half 10baseT/Full 100baseT/Half 100baseT/Full 1000baseT/Half 1000baseT/Full Supported pause frame use: No Supports auto-negotiation: Yes Advertised link modes: 10baseT/Half 10baseT/Full 100baseT/Half 100baseT/Full 1000baseT/Half 1000baseT/Full Advertised pause frame use: No Advertised auto-negotiation: Yes Link partner advertised link modes: 10baseT/Half 10baseT/Full 100baseT/Half 100baseT/Full 1000baseT/Full Link partner advertised pause frame use: Symmetric Link partner advertised auto-negotiation: Yes Speed: 1000Mb/s Duplex: Full Port: MII PHYAD: 0 Transceiver: external Auto-negotiation: on Supports Wake-on: g Wake-on: d Link detected: yesThis says that pause frames (ethernet flow control) are not supported. FWIW, it is supported (and enabled) on my x86 ReadyNAS.
Hi StephenB,
many thanks for your reply and sorry for my delayed response. My RN104 set the RAID5 volume to read only resulting from a filesystem failure and I had to start over and restore from backup. I was tied up by doing the recovery. All good now.
Have a great day,
Holger
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