Administrator Guide

Version Description
8.3.11.1 Introduced on the Z9000.
8.3.7.0 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.
Related
Commands
forward-delay — the amount of time the interface waits in the Blocking State and the Learning State
before transitioning to the Forwarding State.
hello-time — changes the time interval between BPDUs.
max-hops
Configure the maximum hop count.
Z9000
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
9.7(0.0) Introduced on the S6000-ON.
9.0.2.0 Introduced on the S6000.
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.
Multiple Spanning Tree Protocol (MSTP) 799