We purchased a SF300. Topology as follows
Cisco 2921 (voice gateway) --->SF300 ---> Juniper SRX
I cannot seem to get the Spanning tree on the SF300 and the Cisco 2921 to recognize each other. I have found posts where it's stated to put the SF300 into MST mode to be compatible with the RSPTV+ on the Cisco 2921. Configs as follows:
Cisco 2921
TM8-BE6KS#sh span
Bridge group 1 is executing the ieee compatible Spanning Tree protocol
Bridge Identifier has priority 32768, address 7070.8bbf.c9d1
Configured hello time 2, max age 20, forward delay 15
We are the root of the spanning tree
Topology change flag not set, detected flag not set
Number of topology changes 5 last change occurred 14:46:42 ago
from GigabitEthernet0/1
Times: hold 1, topology change 35, notification 2
hello 2, max age 20, forward delay 15
Timers: hello 1, topology change 0, notification 0, aging 300
Port 5 (GigabitEthernet0/1) of Bridge group 1 is forwarding
Port path cost 4, Port priority 128, Port Identifier 128.5.
Designated root has priority 32768, address 7070.8bbf.c9d1
Designated bridge has priority 32768, address 7070.8bbf.c9d1
Designated port id is 128.5, designated path cost 0
Timers: message age 0, forward delay 0, hold 0
Number of transitions to forwarding state: 4
BPDU: sent 27116, received 0
VLAN1 is executing the ieee compatible Spanning Tree protocol
Bridge Identifier has priority 16384, address 7070.8bbf.c9d3
Configured hello time 2, max age 20, forward delay 15
We are the root of the spanning tree
Topology change flag not set, detected flag not set
Number of topology changes 1 last change occurred 00:58:38 ago
from ucse1/1
Times: hold 1, topology change 35, notification 2
hello 2, max age 20, forward delay 15
Timers: hello 1, topology change 0, notification 0, aging 300
Port 100 (ucse1/1) of VLAN1 is forwarding
Port path cost 4, Port priority 128, Port Identifier 128.100.
Designated root has priority 16384, address 7070.8bbf.c9d3
Designated bridge has priority 16384, address 7070.8bbf.c9d3
Designated port id is 128.100, designated path cost 0
Timers: message age 0, forward delay 0, hold 0
Number of transitions to forwarding state: 1
BPDU: sent 1772, received 0
VLAN100 is executing the ieee compatible Spanning Tree protocol
Bridge Identifier has priority 32768, address 7070.8bbf.c9d4
Configured hello time 2, max age 20, forward delay 15
We are the root of the spanning tree
Topology change flag not set, detected flag not set
Number of topology changes 1 last change occurred 00:58:38 ago
from ucse1/1
Times: hold 1, topology change 35, notification 2
hello 2, max age 20, forward delay 15
Timers: hello 1, topology change 0, notification 0, aging 300
Port 100 (ucse1/1) of VLAN100 is forwarding
Port path cost 4, Port priority 128, Port Identifier 128.100.
Designated root has priority 32768, address 7070.8bbf.c9d4
Designated bridge has priority 32768, address 7070.8bbf.c9d4
Designated port id is 128.100, designated path cost 0
Timers: message age 0, forward delay 0, hold 0
Number of transitions to forwarding state: 1
BPDU: sent 1772, received 0
SF300 CONFIG
SF300#sh span
Spanning tree enabled mode MSTP
Default port cost method: short
Loopback guard: Enabled
Gathering information ..........
###### MST 0 Vlans Mapped:
CST Root ID Priority 0
Address 70:1f:53:ea:a0:c2
This switch is root for CST and IST master
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Max hops 20
Name State Prio.Nbr Cost Sts Role PortFast Type
--------- -------- --------- -------- ------ ---- -------- -----------------
fa1 enabled 128.1 19 Frw Desg Yes P2P Intr
fa2 enabled 128.2 100 Dsbl Dsbl No -
fa3 enabled 128.3 19 Frw Desg Yes P2P Intr
fa4 enabled 128.4 19 Frw Desg Yes P2P Intr
fa5 enabled 128.5 19 Frw Desg Yes P2P Intr
fa6 enabled 128.6 100 Dsbl Dsbl No -
fa7 enabled 128.7 100 Dsbl Dsbl No -
fa8 enabled 128.8 19 Frw Desg Yes P2P Intr
fa9 enabled 128.9 19 Frw Desg Yes P2P Intr
fa10 enabled 128.10 19 Frw Desg Yes P2P Intr
fa11 enabled 128.11 19 Frw Desg Yes P2P Intr
fa12 enabled 128.12 19 Frw Desg Yes P2P Intr
fa13 enabled 128.13 100 Dsbl Dsbl No -
fa14 enabled 128.14 19 Frw Desg Yes P2P Intr
fa15 enabled 128.15 19 Frw Desg Yes P2P Intr
fa16 enabled 128.16 19 Frw Desg Yes P2P Intr
fa17 enabled 128.17 19 Frw Desg Yes P2P Intr
fa18 enabled 128.18 100 Dsbl Dsbl No -
fa19 enabled 128.19 19 Frw Desg Yes P2P Intr
fa20 enabled 128.20 100 Dsbl Dsbl No -
fa21 enabled 128.21 19 Frw Desg Yes P2P Intr
fa22 enabled 128.22 100 Dsbl Dsbl No -
fa23 enabled 128.23 19 Frw Desg Yes P2P Intr
fa24 enabled 128.24 100 Dsbl Dsbl No -
gi1 enabled 128.49 4 Frw Desg Yes P2P Intr
gi2 enabled 128.50 4 Frw Desg No P2P Bound (STP)
gi3 enabled 128.51 100 Dsbl Dsbl No -
gi4 enabled 128.52 100 Dsbl Dsbl No -
Po1 enabled 128.1000 4 Dsbl Dsbl No -
Po2 enabled 128.1001 4 Dsbl Dsbl No -
Po3 enabled 128.1002 4 Dsbl Dsbl No -
Po4 enabled 128.1003 4 Dsbl Dsbl No -
Po5 enabled 128.1004 4 Dsbl Dsbl No -
Po6 enabled 128.1005 4 Dsbl Dsbl No -
Po7 enabled 128.1006 4 Dsbl Dsbl No -
Po8 enabled 128.1007 4 Dsbl Dsbl No -
###### MST 1 Vlans Mapped: 1,100
Root ID Priority 32768
Address 70:1f:53:ea:a0:c2
This switch is the regional Root
Interfaces
Name State Prio.Nbr Cost Sts Role PortFast Type
-------- -------- -------- --------- ---- ---- -------- ----------
fa1 enabled 128.1 19 Frw Desg Yes P2P Inter
fa2 enabled 128.2 100 Dsbl Dsbl No -
fa3 enabled 128.3 19 Frw Desg Yes P2P Inter
fa4 enabled 128.4 19 Frw Desg Yes P2P Inter
fa5 enabled 128.5 19 Frw Desg Yes P2P Inter
fa6 enabled 128.6 100 Dsbl Dsbl No -
fa7 enabled 128.7 100 Dsbl Dsbl No -
fa8 enabled 128.8 19 Frw Desg Yes P2P Inter
fa9 enabled 128.9 19 Frw Desg Yes P2P Inter
fa10 enabled 128.10 19 Frw Desg Yes P2P Inter
fa11 enabled 128.11 19 Frw Desg Yes P2P Inter
fa12 enabled 128.12 19 Frw Desg Yes P2P Inter
fa13 enabled 128.13 100 Dsbl Dsbl No -
fa14 enabled 128.14 19 Frw Desg Yes P2P Inter
fa15 enabled 128.15 19 Frw Desg Yes P2P Inter
fa16 enabled 128.16 19 Frw Desg Yes P2P Inter
fa17 enabled 128.17 19 Frw Desg Yes P2P Inter
fa18 enabled 128.18 100 Dsbl Dsbl No -
fa19 enabled 128.19 19 Frw Desg Yes P2P Inter
fa20 enabled 128.20 100 Dsbl Dsbl No -
fa21 enabled 128.21 19 Frw Desg Yes P2P Inter
fa22 enabled 128.22 100 Dsbl Dsbl No -
fa23 enabled 128.23 19 Frw Desg Yes P2P Inter
fa24 enabled 128.24 100 Dsbl Dsbl No -
gi1 enabled 128.49 4 Frw Desg Yes P2P Inter
gi2 enabled 128.50 4 Frw Boun No P2P Bound (STP)
gi3 enabled 128.51 100 Dsbl Dsbl No -
gi4 enabled 128.52 100 Dsbl Dsbl No -
Po1 enabled 128.1000 100 Dsbl Dsbl No -
Po2 enabled 128.1001 100 Dsbl Dsbl No -
Po3 enabled 128.1002 100 Dsbl Dsbl No -
Po4 enabled 128.1003 100 Dsbl Dsbl No -
Po5 enabled 128.1004 100 Dsbl Dsbl No -
Po6 enabled 128.1005 100 Dsbl Dsbl No -
Po7 enabled 128.1006 100 Dsbl Dsbl No -
As of now, i am not seeing any negative impacts to the network. Its activity lights on my switch lighting in unison that is causing me to think this is a problem. Any ideas on how to determine if this is normal behavior or anything else i can check.
