Users Guide

582 Fabric OS Administrator’s Guide
53-1002920-02
F_Port trunking
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2. On the host side, enable trunking as described in the Brocade Adapters Administrator’s Guide.
3. On the switch side, enable the ports by using the portEnable command.
switch:admin> portenable 3/40
switch:admin> portenable 3/41
F_Port trunking considerations
Table 91 describes the F_Port masterless trunking considerations.
TABLE 91 F_Port masterless trunking considerations
Category Description
AD You cannot create a Trunk Area on ports with different Admin Domains. You cannot create a
Trunk Area in AD255.
Area assignment You statically assign the area within the trunk group on the edge switch. That group is the
F_Port trunk.
The static trunk area you assign must fall within the ASIC's trunk group of the switch or
blade starting from port 0, and must be one of the port’s default areas of the trunk group.
10-bit addressing is the default mode for all dynamically created partitions in the Brocade
DCX and DCX 8510-8 platforms.
Authentication Authentication occurs only on the F_Port trunk master port and only once per the entire
trunk. This behavior is the same as E_Port trunk master authentication. Because only one
port in the trunk does FLOGI to the switch, and authentication follows FLOGI on that port,
only that port displays the authentication details when you issue the portShow command.
NOTE: Switches in Access Gateway mode do not perform authentication.
configdownload If you issue the configDownload command for a port configuration that is not compatible
with F_Port trunking, and the port is Trunk Area-enabled, then the port will be persistently
disabled. F_Port trunks will never be restored through configDownload.
NOTE: Long distance, port mirroring, non-CORE_PID, and FastWrite are not compatible
with F_Port trunking.
domain,index (D,I) Creating a Trunk Area may remove the Index ("I") from the switch to be grouped to the Trunk
Area. All ports in a Trunk Area share the same index. This means that a domain,index (D,I),
which refers to an index that might have been removed, will no longer be part of the switch.
NOTE: Be sure to include AD, zoning, and DCC when creating a Trunk Area.
You can remove the port from the Trunk Area to place the index back in effect. D,I behaves
as normal, but you may see the effects of grouping ports into a single index.
Also, D,I continues to work for Trunk Area groups. The index can be used in D,I if it was the
index for the Trunk Area group.
DCC Policy DCC policy enforcement for the F_Port trunk is based on the Trunk Area; the FDISC requests
to a trunk port are accepted only if the WWN of the attached device is part of the DCC policy
against the TA. The PWWN of the FLOGI sent from the AG will be dynamic for the F_Port
trunk master. Because you do not know ahead of time what PWWN the AG will use, the
PWWN of the FLOGI will not go through DCC policy check on an F_Port trunk master.
However, the PWWN of the FDISC will continue to go through DCC policy check.