Lenovo Flex System Fabric CN4093, Application Manual

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© Copyright Lenovo 2017 Chapter 17: FCoE and CEE
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FCoE VLANs
Before the switch applies FIP Snooping, all internal switch ports connected to
ENodes and all external ports connected to external FCFs should be members of at
least one common VLAN (for example, VLAN 1). This allows the ENode CNA and
the external FCF to exchange initial FIP VLAN request and notification packets.
Once FIP Snooping is applied, FCoE packets are exchanged using one configured
FCoE VLAN for each attached FCF.
Each ENode port must have VLAN tagging enabled, and must belong to the same
VLAN as the external FCF to which it will connect. In topologies where a single
external FCF is connected to the switch, all ENode and FCF ports belong to the
same VLAN (typically VLAN 1002). When multiple FCFs are connected to the
switch, each FCF must be assigned a unique VLAN, and each ENode must be
assigned to the VLAN for only one particular FCF.
The administrator must ensure that the VLAN configured for each FCF and its
ENodes is supported by the participating FCF and ENode CNAs.
Note:
The FCoE MAC Address Prefix (FC ‐ Map) value is used to identify traffic on
a FCoE VLAN. The valid FC ‐ Map values are from 0xefcf00 to 0x0efcff and are
configured automatically for each FCoE vlan. If you need to manually configure
the FC ‐ MAP, use values in the range 0xefcf00 to 0x0efcf4. The other FC ‐ Map values
are reserved.
Viewing FIP Snooping Information
ACLs automatically generated under FIP snooping are independent of regular,
manually configure ACLs, and are not listed with regular ACLs in switch
information and statistics output. Instead, FCoE ACLs are shown using the
following CLI commands:
For example:
For each ACL, the required traffic criteria are listed, along with the action taken
(permit or deny) for matching traffic. ACLs are listed in order of precedence and
evaluated in the order shown.
The administrator can also view other FCoE information:
CN 4093# show fcoe fips information
(Show all FIP ‐ related information)
CN 4093# show fcoe fips port
<ports>
information
(Show FIP info for a selected port)
CN 4093# show fcoe fips port ext4 information
FIP Snooping on port ext4:
This port has been detected to be an FCF port.
FIPS ACLs configured on this port:
Ethertype 0x8914, action permit.
dmac 00:00:18:01:00:XX, Ethertype 0x8914, action permit.
CN 4093# show fcoe fips fcf
(Show all detected FCFs)
CN 4093# show fcoe fips fcoe
(Show all FCoE connections)