Our hosting company provides all the switching infrastructure for our servers. The private network, connected to
eth2 should be GbE. Recently I've been suspecting that something is misconfigured as cacti graphs never appear to show more than 100mbit of traffic on the link.
Digging further I found that
ethtool do not agree on the link speed.
# mii-tool eth2 eth2: negotiated 100baseTx-FD flow-control, link ok # ethtool eth2 Settings for eth2: Supported ports: [ TP ] Supported link modes: 10baseT/Half 10baseT/Full 100baseT/Half 100baseT/Full 1000baseT/Half 1000baseT/Full Supports auto-negotiation: Yes Advertised link modes: 10baseT/Half 10baseT/Full 100baseT/Half 100baseT/Full 1000baseT/Half 1000baseT/Full Advertised auto-negotiation: Yes Speed: 1000Mb/s Duplex: Full
Which tool should I trust ?