BLADE OS™ Command Reference HP GbE2c L2/L3 Ethernet Blade Switch Version 5.1 Advanced Functionality Software

BLADE OS 5.1 Command Reference
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 Chapter 4: The Information Menu BMD00114, August 2009
/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.
Common Internal Spanning Tree: on
VLANs MAPPED: 1-4094
VLANs: 1 4095
Current Root: Path-Cost Port MaxAge FwdDel
8000 00:11:58:ae:39:00 0 0 20 15
Cist Regional Root: Path-Cost
8000 00:11:58:ae:39:00 0
Parameters: Priority MaxAge FwdDel Hops
61440 20 15 20
Port Prio Cost State Role Designated Bridge Des Port Hello Type
---- ---- ---- ------ ---- --------------------- -------- ----- ----
1 128 2000 FWD DESG 8000-00:03:42:fa:3b:80 8001 4 P2P, Edge
2 128 2000 FWD DESG 8000-00:03:42:fa:3b:80 8002
3 128 2000 DSB
4 128 2000 DSB
...
* = STP turned off for this port.
Table 28 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.
Hello The hello time parameter specifies, in seconds, how often the root bridge
transmits a configuration bridge protocol data unit (BPDU). Any bridge
that is not the root bridge uses the root bridge hello value.