Okay, here's what I've been through hardware-wise
Pinging is fine to and from, and even with larger byte sizes like 1,400 bytes.
On the switch there are zero RX or TX errors:
Tried disabling LLDP for that port (a suggestion), made things worse, re-enabled. Port 1/2/6 acts the same.
Should I be looking for a new switch (bad ports), or different type of NIC?
EDIT:
If I ping with 1,450 bytes I get 0% packet loss. If I ping with 1,451 bytes or more, I get 100% packet loss.
- New DAC cables (two), one end coded for Brocade, the other end for Intel.
- Another XL710 NIC
Code:
eth2: flags=4163(UP,BROADCAST,RUNNING,MULTICAST) mtu 1500
inet 192.168.1.43 netmask 255.255.255.0 broadcast 192.168.1.255
inet6 fe80::3efd:feff:feb2:cd30 prefixlen 64 scopeid 0x20(link)
ether 3c:fd:fe:b2:cd:30 txqueuelen 1000 (Ethernet)
RX packets 741 bytes 46100 (46.1 KB)
RX errors 382 dropped 197 overruns 0 frame 382
TX packets 39 bytes 6887 (6.8 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
On the switch there are zero RX or TX errors:
Code:
40GigabitEthernet1/2/1 is up, line protocol is up
Port up for 16 minute(s) 37 second(s)
Hardware is 40GigabitEthernet, address is 748e.f8fe.93f6 (bia 748e.f8fe.940f)
Interface type is 40Gig Fiber
Configured speed 40Gbit, actual 40Gbit, configured duplex fdx, actual fdx
Configured mdi mode AUTO, actual none
Member of L2 VLAN ID 1, port is untagged, port state is FORWARDING
BPDU guard is Disabled, ROOT protect is Disabled, Designated protect is Disabled
Link Error Dampening is Disabled
STP configured to ON, priority is level0, mac-learning is enabled
Openflow is Disabled, Openflow Hybrid mode is Disabled, Flow Control is enabled
Mirror disabled, Monitor disabled
Mac-notification is disabled
Not member of any active trunks
Not member of any configured trunks
No port name
MTU 1500 bytes, encapsulation ethernet
300 second input rate: 48 bits/sec, 0 packets/sec, 0.00% utilization
300 second output rate: 2168 bits/sec, 3 packets/sec, 0.00% utilization
56352 packets input, 6296114 bytes, 0 no buffer
Received 503 broadcasts, 7331 multicasts, 48518 unicasts
0 input errors, 0 CRC, 0 frame, 0 ignored
0 runts, 0 giants
350121 packets output, 73835998 bytes, 0 underruns
Transmitted 143184 broadcasts, 121844 multicasts, 85093 unicasts
0 output errors, 0 collisions
Relay Agent Information option: Disabled
Egress queues:
Queue counters Queued packets Dropped Packets
0 347387 0
1 0 0
2 0 0
3 0 0
4 0 0
5 19 0
6 0 0
7 2719 0
Tried disabling LLDP for that port (a suggestion), made things worse, re-enabled. Port 1/2/6 acts the same.
Should I be looking for a new switch (bad ports), or different type of NIC?
EDIT:
If I ping with 1,450 bytes I get 0% packet loss. If I ping with 1,451 bytes or more, I get 100% packet loss.
Last edited: