Can't find what you need?


• Ask the Community
• Create a Case
Reset Search
 

 

Article

How to configure MSTP between 200-Series and EXOS switches

« Go Back

Information

 
TitleHow to configure MSTP between 200-Series and EXOS switches
Objective
Configuration example for MSTP interoperability between 200-Series and EXOS switches
Environment
  • 200-Series switch firmware 1.2.6.9 or newer
  • EXOS switch firmware 22.3.x.x or newer
  • MSTP
  • 802.1s
Procedure
  • Consider the following diagram

User-added image

 
  • 220-Series
 
vlan database
vlan 10,20,30,40
vlan name 10 "red"
vlan name 20 "green"
vlan name 30 "yellow"
vlan name 40 "blue"
exit


spanning-tree configuration name "region1"
spanning-tree configuration revision 3
spanning-tree mst priority 0 8192
spanning-tree mst instance 1
spanning-tree mst priority 1 4096
spanning-tree mst vlan 1 10,20
spanning-tree mst instance 2
spanning-tree mst priority 2 8192
spanning-tree mst vlan 2 30,40


interface 1/0/10
switchport mode trunk
switchport trunk allowed vlan 10,20,30,40
exit


interface 1/0/20
switchport trunk allowed vlan 10,20,30,40
exit
 
  • EXOS switch
 
# Module vlan configuration.
#
configure vlan default delete ports all
configure vr VR-Default delete ports 1-28
configure vr VR-Default add ports 1-28
create vlan "blue"
configure vlan blue tag 40
create vlan "green"
configure vlan green tag 20
create vlan "red"
configure vlan red tag 10
create vlan "yellow"
configure vlan yellow tag 30
configure vlan blue add ports 10,20 tagged
configure vlan Default add ports 1-28 untagged
configure vlan green add ports 10,20 tagged
configure vlan red add ports 10,20 tagged
configure vlan yellow add ports 10,20 tagged


# Module stp configuration.
#
configure mstp region region1
configure stpd s0 priority 4096
create stpd s1
configure stpd s1 mode mstp msti 1
configure stpd s1 priority 8192
create stpd s2
configure stpd s2 mode mstp msti 2
configure stpd s2 priority 4096
enable stpd s2 auto-bind vlan blue
enable stpd s1 auto-bind vlan green
enable stpd s1 auto-bind vlan red
enable stpd s2 auto-bind vlan yellow
enable stpd s1
enable stpd s2
 
  • 200-Series show commands
 
(Extreme 220) #show spanning-tree summary
(Extreme 220) #show spanning-tree active
(Extreme 220) #show spanning-tree mst summary

Extreme 220) #show spanning-tree mst port detailed 0 1/0/10
(Extreme 220) #show spanning-tree mst port detailed 1 1/0/10
(Extreme 220) #show spanning-tree mst port detailed 2 1/0/10


Extreme 220) #show spanning-tree mst port detailed 0 1/0/20
(Extreme 220) #show spanning-tree mst port detailed 1 1/0/20
(Extreme 220) #show spanning-tree mst port detailed 2 1/0/20


Output example
--------------

(Extreme 220) #show spanning-tree summary

Spanning Tree Admin Mode.......... Enabled
Spanning Tree Version............. IEEE 802.1s
BPDU Guard Mode................... Disabled
BPDU Filter Mode.................. Disabled
Configuration Name................ region1
Configuration Revision Level...... 3
Configuration Digest Key.......... 0xca136a235706b316c8db8f921067a68f
Configuration Format Selector..... 0
MST Instances..................... 1,2


(Extreme 220) #show spanning-tree mst port detailed 1 1/0/10

MST Instance ID................................ 1
Port Identifier................................ 80:0A
Port Priority.................................. 128
Port Forwarding State.......................... Forwarding
Port Role...................................... Designated
Auto-calculate Port Path Cost.................. Enabled
Port Path Cost................................. 20000
Designated Root................................ 10:01:00:04:96:9F:B8:A0
Designated Port Cost........................... 0
Designated Bridge.............................. 10:01:00:04:96:9F:B8:A0
Designated Port Identifier..................... 80:0A
Loop Inconsistent State........................ False
Transitions Into Loop Inconsistent State....... 0
Transitions Out Of Loop Inconsistent State..... 0



(Extreme 220) #show spanning-tree mst port detailed 2 1/0/20

MST Instance ID................................ 2
Port Identifier................................ 80:14
Port Priority.................................. 128
Port Forwarding State.......................... Discarding
Port Role...................................... Alternate
Auto-calculate Port Path Cost.................. Enabled
Port Path Cost................................. 20000
Designated Root................................ 10:02:00:04:96:9B:9A:17
Designated Port Cost........................... 0
Designated Bridge.............................. 10:02:00:04:96:9B:9A:17
Designated Port Identifier..................... 80:14
Loop Inconsistent State........................ False
Transitions Into Loop Inconsistent State....... 0
Transitions Out Of Loop Inconsistent State..... 0
 
  • EXOS switch show commands
 
show stpd
show stpd s0
show stpd s1
show stpd s2

show stpd s0 detail
show stpd s1 detail
show stpd s2 detail

show stpd s0 ports 10
show stpd s1 ports 10
show stpd s2 ports 10

show stpd s0 ports 20
show stpd s1 ports 20
show stpd s2 ports 20

show stpd s0 ports blocked-ports
show stpd s1 ports blocked-ports
show stpd s1 ports blocked-ports



Sample output
-------------


* X440G2-24p-10G4.5 # show stpd
                MSTP Global Configuration:
MSTP Region Name        : region1
MSTP Format Identifier  : 0
MSTP Revision Level     : 3
MSTP Digest             : ca:13:6a:23:57:06:b3:16:c8:db:8f:92:10:67:a6:8f
Common and Internal Spanning Tree (CIST)        : s0
Total Number of MST Instances (MSTI)            : 2

Name       Tag  Flags  Ports Bridge ID        Designated Root  Rt Port Rt Cost
s0         0000 EM----    28 10000004969b9a17 10000004969b9a17 -------       0
s1         0000 EI----     2 20000004969b9a17 10000004969fb8a0      10   20000
s2         0000 EI----     2 10000004969b9a17 10000004969b9a17 -------       0

Total number of STPDs: 3                STP Flush Method: VLAN and Port
STP Filter Method: System-wide          STP BPDU Forwarding: On
STP Multicast Send IGMP or MLD Query: On

Flags: (C) Topology Change, (D) Disable, (E) Enable, (R) Rapid Root Failover
       (T) Topology Change Detected, (M) MSTP CIST, (I) MSTP MSTI




* X440G2-24p-10G4.6 # show stpd s2 ports 10
Port     Mode   State      Cost  Flags     Priority Port ID Designated Bridge
10     802.1D FORWARDING 20000 eDap-m--I- 128      800a    10:00:00:04:96:9b:9a:17

Total Ports: 1

 ------------------------- Flags: ----------------------------
1:                e=Enable, d=Disable
2: (Port role)    R=Root, D=Designated, A=Alternate, B=Backup, M=Master
3: (Config type)  b=broadcast, p=point-to-point, e=edge, a=auto
4: (Oper. type)   b=broadcast, p=point-to-point, e=edge
5:                p=proposing, a=agree
6: (partner mode) d = 802.1d, w = 802.1w, m = mstp
7:                i = edgeport inconsistency
8:                S = edgeport safe guard active
                  s = edgeport safe guard configured but inactive
8:                G = edgeport safe guard bpdu restrict active in 802.1w and mstp
                  g = edgeport safe guard bpdu restrict active in 802.1d
9:                B = Boundary, I = Internal
10:               r = restricted role, t = active role




* X440G2-24p-10G4.7 # show stpd s1 ports blocked-ports
Port    VLAN
---------------------------------------------------------------------------------
20     red,green

Number of Blocked Ports: 1

 
Additional notes
See the following KCS articles:-
How do I configure MSTP between different switches to communicate correctly?
For recommended configuration of edge ports on EXOS switches
Spanning Tree Topology Changes on EXOS Switches



 

Feedback

 

Was this article helpful?


   

Feedback

Please tell us how we can make this article more useful.

Characters Remaining: 255