Technical data

BLADE OS 5.0 Command Reference
BMD00142, November 2009 Chapter 4: The Information Menu
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/info/l2/cist
Common Internal Spanning Tree Information
In addition to seeing if Common Internal Spanning Tree (CIST) is enabled or disabled, you can
view CIST bridge and port-specific information. The following table describes the CIST
parameters.
Mstp Digest: 0xac36177f50283cd4b83821d8ab26de62
Common Internal Spanning Tree:
VLANs MAPPED: 1-4094
VLANs: 1 2 4095
Current Root: Path-Cost Port MaxAge FwdDel
8000 00:11:58:ae:39:00 2026 0 20 15
Cist Regional Root: Path-Cost
8000 00:11:58:ae:39:00 0
Parameters: Priority MaxAge FwdDel Hops
32768 20 15 20
Port Prio Cost State Role Designated Bridge Des Port Hello Type
----- ---- --------- ----- ---- ---------------------- -------- ----- ----
1 128 2000! FWD ROOT fffe-00:13:0a:4f:7d:d0 8011 2 P2P#
23 128 2000! DISC ALTN fffe-00:22:00:24:46:00 8012 2 P2P#
MGTA 0 0 FWD *
* = STP turned off for this port.
! = Automatic path cost.
# = PVST Protection enabled for this port.
Table 24 CIST Parameter Descriptions
Parameter Description
CIST Root The CIST Root shows information about the root bridge for the Common
Internal Spanning Tree (CIST). Values on this row of information refer to
the CIST root.
CIST Regional Root The CIST Regional Root shows information about the root bridge for this
MSTP region. Values on this row of information refer to the regional root.
Priority (bridge) The bridge priority parameter controls which bridge on the network will
become the STP root bridge.