Guest

Preview Tool

Cisco Bug: CSCuo87163 - Close of telnet needs to send exit to "spanning-tree mst config"

Last Modified

Feb 05, 2017

Products (5)

  • Cisco Nexus 7000 Series Switches
  • Cisco Nexus 7000 10-Slot Switch
  • Cisco Nexus 7000 4-Slot Switch
  • Cisco Nexus 7000 18-Slot Switch
  • Cisco Nexus 7000 9-Slot Switch

Known Affected Releases

6.1(4)

Description (partial)

Symptom:MST config might get changed when you 'exit' from spanning-tree mst configuration
mode even customer not intend to do that.
Conditions:when someone enters into 'spanning-tree mst configuration' mode and do some configuration change, but not 'exit' this mode as normal, instead just close the telnet session.

e.g.
n7k-4# config t
Enter configuration commands, one per line.  End with CNTL/Z.
n7k-4(config)# spanning-tree mst configuration 
n7k-4(config-mst)# no name
n7k-4(config-mst)# <-------disconnect telnet session without type 'exit' or 'end',just close the tcp. 
dcos-telnet> q
Connection closed.

when other guys login later, as long as 'exit' from 'spanning-tree mst configuration' mode, the pending config left by earlier sessions will get applied.

n7k-4# config t
Enter configuration commands, one per line.  End with CNTL/Z.
n7k-4(config)# spanning-tree mst configuration 
n7k-4(config-mst)# end

n7k-4# sh run spanning-tree 
spanning-tree mode mst
spanning-tree mst configuration
  revision 5
  instance 1 vlan 8-9,1000
Bug details contain sensitive information and therefore require a Cisco.com account to be viewed.

Bug Details Include

  • Full Description (including symptoms, conditions and workarounds)
  • Status
  • Severity
  • Known Fixed Releases
  • Related Community Discussions
  • Number of Related Support Cases
Bug information is viewable for customers and partners who have a service contract. Registered users can view up to 200 bugs per month without a service contract.