Dell Force10 S55T FTOS Command Line Reference Guide for the S55 System FTOS 8. - Page 669
max-hops, msti
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Defaults 20 seconds Command Modes MULTIPLE SPANNING TREE Command History Version 8.3.5.0 Version 7.6.1.0 Version 7.5.1.0 Version 6.5.1.0 Introduced on the S55. Added support for S-Series Added support for C-Series Introduced Related Commands forward-delay hello-time The amount of time the interface waits in the Blocking State and the Learning State before transitioning to the Forwarding State. Change the time interval between BPDUs. max-hops c e s Configure the maximum hop count. Syntax max-hops number To return to the default values, enter no max-hops. Parameters range Enter a number for the maximum hop count. Range: 1 to 40 Default: 20 Defaults 20 hops Command Modes MULTIPLE SPANNING TREE Command History Version 8.3.5.0 Version 7.6.1.0 Version 7.5.1.0 Version 6.5.1.0 Introduced on the S55. Added support for S-Series Added support for C-Series Introduced Usage Information The max-hops 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 reaches zero, the switch discards the BPDU and ages out any information that it holds for the port. msti c e s Syntax Configure Multiple Spanning Tree instance, bridge priority, and one or multiple VLANs mapped to the MST instance. msti instance {vlan range | bridge-priority priority} Multiple Spanning Tree Protocol (MSTP) | 669