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Cisco Catalyst Blade Switch for HP Command Reference
OL-8916-01
Chapter 2 Cisco Catalyst Blade Switch 3020 for HP Cisco IOS Commands
spanning-tree mst max-age
spanning-tree mst max-age
Use the spanning-tree mst max-age global configuration command to set the interval between
messages that the spanning tree receives from the root switch. If a switch does not receive a bridge
protocol data unit (BPDU) message from the root switch within this interval, it recomputes the
spanning-tree topology. Use the no form of this command to return to the default setting.
spanning-tree mst max-age seconds
no spanning-tree mst max-age
Syntax Description
Defaults The default is 20 seconds.
Command Modes Global configuration
Command History
Usage Guidelines After you set the spanning-tree mst max-age seconds global configuration command, if a switch does
not receive BPDUs from the root switch within the specified interval, the switch recomputes the
spanning-tree topology. The max-age setting must be greater than the hello-time setting.
Changing the spanning-tree mst max-age command affects all spanning-tree instances.
Examples This example shows how to set the spanning-tree max-age to 30 seconds for all multiple spanning-tree
(MST) instances:
Switch(config)# spanning-tree mst max-age 30
You can verify your setting by entering the show spanning-tree mst privileged EXEC command.
Related Commands
seconds Interval between messages the spanning tree receives from the root switch. The range
is 6 to 40 seconds.
Release Modification
12.2(25)SEF This command was introduced.
Command Description
show spanning-tree mst Displays MST information.
spanning-tree mst forward-time Sets the forward-delay time for all MST instances.
spanning-tree mst hello-time Sets the interval between hello BPDUs sent by root switch
configuration messages.
spanning-tree mst max-hops Sets the number of hops in a region before the BPDU is
discarded.
- Command Reference 1
- CONTENTS 3
- Contents 10
- OL-8916-01 10
- Audience 15
- Purpose 15
- Conventions 15
- Related Publications 16
- Obtaining Documentation 17
- Documentation Feedback 18
- Submitting a Service Request 20
- CLI Command Modes 23
- User EXEC Mode 25
- Privileged EXEC Mode 25
- Global Configuration Mode 25
- Interface Configuration Mode 26
- VLAN Configuration Mode 27
- Line Configuration Mode 27
- IOS Commands 29
- -lanbasek9-mz.122-25.SEF 41
- Switch# clear vmps statistics 75
- Switch# clear vtp counters 76
- IGMP profile number 147
- Switch(config)# mls qos 207
- Command Description 228
- service-policy 282
- • IP address and network mask 287
- setup express 290
- interface-id 297
- show boot 300
- show dot1x 321
- show eap 324
- show errdisable detect 329
- show errdisable flap-values 331
- show etherchannel 334
- show interfaces 339
- show lacp 362
- show link state group 367
- show mac access-group 369
- show mac address-table 371
- show mac address-table vlan 388
- show mls qos input-queue 392
- show mls qos interface 396
- show mls qos maps 397
- show mls qos queue-set 401
- show monitor 403
- show mvr 406
- show policy-map 417
- show port-security 418
- show spanning-tree 422
- show udld 432
- show vlan 436
- show vmps 445
- show vtp 447
- shutdown vlan 452
- snmp-server enable traps 453
- snmp-server host 456
- snmp trap mac-notification 461
- spanning-tree backbonefast 462
- spanning-tree bpdufilter 464
- spanning-tree bpduguard 466
- • 1000 Mbps—4 467
- • 100 Mbps—19 467
- • 10 Mbps—100 467
- spanning-tree cost 468
- command to display an 469
- spanning-tree guard 473
- spanning-tree link-type 475
- spanning-tree mode 480
- • 1000 Mbps—20000 483
- • 100 Mbps—200000 483
- • 10 Mbps—2000000 483
- spanning-tree mst cost 484
- spanning-tree mst max-age 487
- spanning-tree mst max-hops 488
- spanning-tree mst priority 493
- spanning-tree mst root 494
- spanning-tree port-priority 497
- spanning-tree uplinkfast 503
- spanning-tree vlan 505
- srr-queue bandwidth limit 511
- srr-queue bandwidth shape 512
- srr-queue bandwidth share 514
- storm-control 516
- switchport access 519
- switchport backup interface 521
- switchport block 524
- switchport mode 526
- switchport nonegotiate 528
- switchport port-security 530
- switchport priority extend 538
- switchport trunk 540
- switchport voice vlan 543
- system mtu 545
- traceroute mac 548
- traceroute mac ip 551
- Switch(config)# udld enable 556
- udld port 557
- vlan (global configuration) 560
- vlan (VLAN configuration) 565
- vlan access-map 571
- vlan database 573
- vlan filter 577
- Switch# vmps reconfirm 578
- vmps retry 580
- Switch(config)# vmps retry 7 580
- vmps server 582
- vtp (global configuration) 583
- vtp (VLAN configuration) 587
- Commands 591
- • d—directory 597
- • r—readable 597
- • w—writable 597
- • x—executable 597
- [-test 601
- Debug Commands 617
- • MAC address registry calls 695
- Show Platform Commands 697
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