11-30-2015 01:33 PM - edited 03-08-2019 02:54 AM
Hello everyone,
In our computer park we have two C3750 in stack. The rest of the switches are Cisco SG300-28P.
Which way should I set for it to be compatible in both models and the C3750 model be the root?
Solved! Go to Solution.
12-01-2015 05:11 AM
Try to configure instance 1
on 3750
spanning-tree mst configuration
name mymst
revision 1
instance 1 vlan 1-4096 [ use question mark if hyphen is not accepted]
spanning-tree mst 1 priority 4096
on sg300
spanning-tree mst configuration
name mymst
revision 1
instance 1 vlan 1-4096
spanning-tree mst 1 priority 61440
Masoud
11-30-2015 03:42 PM
Hello,
edited
SG300-28P supports RSTP and MSTP. The default is RSTP. Check the link below.
http://www.cisco.com/c/en/us/products/collateral/switches/small-business-smart-switches/data_sheet_c78-610061.pdf
http://www.cisco.com/c/dam/en/us/td/docs/switches/lan/csbms/sf30x_sg30x/administration_guide/CLI_Nikola300_1_3_7.pdf
3750 supports PVST MST Rapid PVST. The default is Rapid PVST.
****************************************
on 3750
spanning-tree mode mst
Spanning-tree mst 0 priority 4096
*******************************************
On others
spanning-tree mode mst
Spanning-tree mst 0 priority 61440
*************************************************************
Hope it helps,
Masoud
12-01-2015 04:39 AM
Hello Masoud,
Why you edited the post?
12-01-2015 04:43 AM
Hello,
I checked 3750 and noticed RSTP is not in the command sets so I edited my post. What you see you now will work on both 3750 on SG300.
Hope it helps,
Masoud
12-01-2015 05:11 AM
Masoud,
In sg300 no have instance 0 on the command: Spanning-tree mst 0 priority 61440
#spanning-tree mst
configuration Configure MSTP parameters
<1-7> Specify instance ID
max-hops Configure the maximum hops allowed in a region for a
Spanning Tree.
edited:
I try to set on 3750: "spanning-tree mst 1 priority 4096", but the priority always stay 32768 and when I set "spanning-tree mst 0 priority 4096" the priority stays 4096
12-01-2015 05:11 AM
Try to configure instance 1
on 3750
spanning-tree mst configuration
name mymst
revision 1
instance 1 vlan 1-4096 [ use question mark if hyphen is not accepted]
spanning-tree mst 1 priority 4096
on sg300
spanning-tree mst configuration
name mymst
revision 1
instance 1 vlan 1-4096
spanning-tree mst 1 priority 61440
Masoud
12-03-2015 07:37 AM
Hello Masoud,
I set up that way and works very fine!!
Thanks for your help! Really thanks!
12-03-2015 07:40 AM
Hello,
You are most welcome. Happy to help.
Masoud
Find answers to your questions by entering keywords or phrases in the Search bar above. New here? Use these resources to familiarize yourself with the community: