FAS2820: Resolving 10Gbps Network Speed Issue
Applies to
- FAS2820
- CiscoN3K-C3172TQ-10GT Switch
- ONTAP 9
Issue
- 10Gbps network ports are operating at only 1Gbps when connected to a Cisco N3K-C3172TQ-10GT switch.
- Initial connection showed the e1c port at 10Gbps.
After reconnecting the cable, the speed dropped to 1Gbps.
All other ports (e1a, e1b, e1c,e1d) also show 1Gbps.
::> port show Node: Node-01 Speed(Mbps) Health Port IPspace Broadcast Domain Link MTU Admin/Oper Status --------- ------------ ---------------- ---- ---- ----------- -------- a11l Default Datastore up 1500 -/- healthy e0M Default Default up 1500 auto/1000 healthy e0a Cluster Cluster up 9000 auto/25000 healthy e0b Cluster Cluster up 9000 auto/25000 healthy e1a Default Service up 1500 auto/1000 healthy e1b Default CAE up 1500 auto/1000 healthy e1c Default - up 1500 auto/1000 healthy e1d Default - up 1500 auto/1000 healthy Node: Node-02 Speed(Mbps) Health Port IPspace Broadcast Domain Link MTU Admin/Oper Status --------- ------------ ---------------- ---- ---- ----------- -------- a21l Default Datastore up 1500 -/- healthy e0M Default Default up 1500 auto/1000 healthy e0a Cluster Cluster up 9000 auto/25000 healthy e0b Cluster Cluster up 9000 auto/25000 healthy e1a Default Service up 1500 auto/1000 healthy e1b Default CAE up 1500 auto/1000 healthy e1c Default - up 1500 auto/1000 healthy e1d Default - up 1500 auto/1000 healthy 16 entries were displayed.
- The relevant network interface also shows a network speed of 1Gbps in the
sysconfig-alog.
slot 1: 1/10 Gigabit Ethernet Controller IX4-T
e1c MAC Address: d0:39:ea:d4:16:** (auto-1000t-fd-up)
e1d MAC Address: d0:39:ea:d4:16:** (auto-1000t-fd-up)
e1a MAC Address: d0:39:ea:d4:16:** (auto-1000t-fd-up)
e1b MAC Address: d0:39:ea:d4:16:** (auto-1000t-fd-up)
Device Type: X550(0x1563) (BSD99) rev1
Firmware Version: 2.20-0.1 etid 8000174d
Part Number: 110-00751
Hardware Revision: A0
Direct connection between e1b ports on both nodes resulted in 10Gbps speed.
::> port show Node: Node-01 Speed(Mbps) Health Port IPspace Broadcast Domain Link MTU Admin/Oper Status --------- ------------ ---------------- ---- ---- ----------- -------- a11l Default Datastore up 1500 -/- healthy e0M Default Default up 1500 auto/1000 healthy e0a Cluster Cluster up 9000 auto/25000 healthy e0b Cluster Cluster up 9000 auto/25000 healthy e1a Default Service up 1500 auto/1000 healthy e1b Default CAE up 1500 auto/10000 healthy e1c Default - up 1500 auto/1000 healthy e1d Default - up 1500 auto/1000 healthy Node: Node-02 Speed(Mbps) Health Port IPspace Broadcast Domain Link MTU Admin/Oper Status --------- ------------ ---------------- ---- ---- ----------- -------- a21l Default Datastore up 1500 -/- healthy e0M Default Default up 1500 auto/1000 healthy e0a Cluster Cluster up 9000 auto/25000 healthy e0b Cluster Cluster up 9000 auto/25000 healthy e1a Default Service up 1500 auto/1000 healthy e1b Default CAE up 1500 auto/10000 healthy e1c Default - up 1500 auto/1000 healthy e1d Default - up 1500 auto/1000 healthy 16 entries were displayed.