06-25-2014 06:31 AM - edited 03-07-2019 07:50 PM
one stp topology is running if i will connect one more switch with it. Either it will affect our communication or not?
06-25-2014 06:50 AM
Hi mukeshjindal,
The two key points that spring to mind is where is the root bridge?
If the switch you are adding is an edge / access device, make sure it has the default bridge priority of 32768.
As long as your root bridge has a lower priority (0 preferably) the rest of your network will not reconverge when you add the new switch.
07-28-2015 11:02 AM
This discussion has been reposted from Cisco User Groups to the LAN, Switching and Routing community.
06-25-2014 08:08 AM
mukeshjindal,
Jason is correct you want to manually set a root bridge so as to not have issues when adding new switches down the road.
On another note you might want to also look into "spanning-tree rootguard" or "spanning-tree guard root". This will disable ports (put them back into learning state) who would become the root bridge due to their BPDU advertisement.
http://www.cisco.com/c/en/us/support/docs/lan-switching/spanning-tree-protocol/10588-74.html
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