Brocade FC Switch Management Port down

• Brocade Management Port not reachable, no sending or receiving traffic, no errors in errdump indicate a hardware issue.
• Swapping cables and ports do not resolve the issue
• Checking the port configuration via CLI on Bro cade switch (serial connection):

switch:admin> ethif --show eth0

•  $ ethtool eth0
Settings for eth0:
Supported ports: [ TP MII ]
Supported link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
Supports auto-negotiation: Yes
Advertised link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
Advertised auto-negotiation: Yes
Speed: 100Mb/s
Duplex: Full
Port: MII
PHYAD: 1
Transceiver: external
Auto-negotiation: off
Link detected: no

• If Port is set to MII, use:
  $ mii-tool -vvv:
[...]
eth0: 100 Mbit, full duplex, no link
[...]
basic mode: 100 Mbit, full duplex
basic status: no link
capabilities: 100baseTx-FD 100baseTx-HD 10baseT-FD 10baseT-HD
advertising: 100baseTx-FD 100baseTx-HD 10baseT-FD 10baseT-HD
   
• Connected switch port on Cisco switch: