Brocade Fabric OS Administrators Guide (Supporting Fabric OS v7.3.0) - Manual (Page 565)

You can specify up to eight Enforce tags on an FC router.
For example, in the figure above, you could configure the following Enforce tags on the FC routers:
• For FC router 1, configure one Enforce tag, "21".
FC router 1 would accept all LSAN zones starting with "LSAN_21", and so would accept
LSAN_21_fab, but not LSAN_23fabrics.
• For FC router 2, configure two Enforce tags, "21" and "23".
FC router 2 would accept all LSAN zones starting with "LSAN_21" and "LSAN_23", and so would
accept both "LSAN_21_fab" and "LSAN_23fabrics".
Alternatively, you could configure only one Enforce tag, "2", which would handle both of the LSANs.
• For FC router 3, configure one Enforce tag, "23".
FC router 3 would accept all LSAN zones starting with "LSAN_23", and so would accept
LSAN_23fabrics, but not LSAN_21_fab.
Speed tag
The Speed tag allows you to speed up the discovery process by importing devices into the remote edge
fabrics when the devices come online, regardless of the state of the host.
During target discovery, the FC router process of presenting proxy devices and setting up paths to the
proxy devices may cause some sensitive hosts to time out or fail. Using the Speed tag helps sensitive
hosts to quickly discover the devices without timing out.
The Speed tag is used primarily when there are boot over SAN devices across an LSAN.
You set the Speed tag on the FC router, and then configure the LSANs in the target edge fabrics with
the tag.
The FC router automatically accepts all zones with names that start with "lsan_". You can specify a
Speed tag to indicate that devices in LSAN zones that start with the prefix "lsan_tag", should be
imported into the remote edge fabrics when the devices come online.
For example, in the following figure, assume that the host, H1, needs fast access to target devices D1
and D2. You could set up the Speed tag as follows:
1. In FC router 1 and FC router 2, configure the Speed tag as "super".
2. In Edge fabric 2, configure two LSANs:
lsan_f2_f1 (H1, D1)
lsan_f2_f3 (H1, D2)
The LSAN in the host fabric does not need the tag.
3. In Edge fabric 1, configure the following LSAN:
lsan_super_f1_f2 (H1, D1)
4. In Edge fabric 3, configure the following LSAN:
lsan_super_f3_f2 (H1, D2)
5. Choose either the host or target to trigger the fast import process.
The "super" tag is needed only in the LSANs of the target fabrics.
The target proxies D1 and D2 are always present in the host fabric (Edge fabric 2), even if the host is
brought down. A target proxy is removed from the host fabric when the target device is offline.
Speed tag
Fabric OS Administrators Guide 565
53-1003130-01