Administrator Guide

max-hops
Configure the maximum hop count.
C9000 Series
Syntax
max-hops number
To return to the default values, use the no max-hops command.
Parameters
range Enter a number for the maximum hop count. The range is from 1 to 40. The default is 20.
Defaults 20 hops
Command Modes MULTIPLE SPANNING TREE
Command History
This guide is platform-specific. For command information about other platforms, refer to the relevant Dell
Networking OS Command Line Reference Guide.
The following is a list of the Dell Networking OS version history for this command.
Version Description
9.9(0.0) Introduced on the C9010.
9.2(1.0) Introduced on the Z9500.
8.3.19.0 Introduced on the S4820T.
8.3.11.1 Introduced on the Z9000.
8.3.7.1 Introduced on the S4810.
7.6.1.0 Introduced on the S-Series.
7.5.1.0 Introduced on the C-Series.
6.5.1.0 Introduced.
Usage Information The max-hops command is a configuration command that applies to both the IST and all MST instances in the
MSTP region. The BPDUs sent out by the root switch set the remaining-hops parameter to the configured value
of max-hops. When a switch receives the BPDU, it decrements the received value of the remaining hops and uses
the resulting value as remaining-hops in the BPDUs. If the remaining-hops reach zero, the switch discards the
BPDU and ages out any information that it holds for the port.
msti
Configure multiple spanning tree instance, bridge priority, and one or multiple VLANs mapped to the MST instance.
C9000 Series
Syntax
msti instance {vlan range | bridge-priority priority}
To disable mapping or bridge priority, use the no msti instance {vlan range | bridge-priority
priority} command.
Parameters
msti instance Enter the MSTP iInstance. The range is from zero (0) to 63.
vlan range Enter the keyword vlan then the identifier range value. The range is from 1 to 4094.
bridge-priority
priority
Enter the keywords bridge-priority then a value in increments of 4096 as the
bridge priority. The range is from zero (0) to 61440.
Valid priority values are: 0, 4096, 8192, 12288, 16384, 20480, 24576, 28672, 32768,
36864, 40960, 45056, 49152, 53248, 57344, and 61440. All other values are rejected.
1040 Multiple Spanning Tree Protocol (MSTP)