ā12-07-2023 05:14 AM - edited ā12-07-2023 05:34 AM
Hello i have a problems when i attep to connect poortchannel
The scenario is : SW ACCESS - CONNECT TO DISTRIBUTION SW is connect to core ( i dont have access for set up this sw)
I am seeing this error Bound(RSTP) Pre-STD-Rx on the distribution SW
Mybe the core SWITCH has RSTP how i can sove this ?
SW ACCESS
#show spanning-tree
MST0
Spanning tree enabled protocol mstp
Root ID Priority 0
Address 3822.d6d3.a3f7
Cost 2000
Port 2281 (Port-channel1)
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Bridge ID Priority 0 (priority 0 sys-id-ext 0)
Address cc79.d7fd.2b00
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Interface Role Sts Cost Prio.Nbr Type
------------------- ---- --- --------- -------- --------------------------------
Po1 Root FWD 10000 128.2281 P2p
Switch Ports Model SW Version SW Image Mode
------ ----- ----- ---------- ---------- ----
* 1 52 C9200L-48P-4G 17.06.03 CAT9K_LITE_IOSXE INSTALL
2 52 C9200L-48P-4G 17.06.03 CAT9K_LITE_IOSXE INSTALL
*Dec 7 13:59:01 CET: %SPANTREE-5-ROOTCHANGE: Root Changed for instance 0: New Root Port is Port-channel1. New Root Mac Address is 3822.d6d3.a3f7
*Dec 7 13:59:29 CET: %SYS-6-LOGOUT: User fibratel has exited tty session 2(172.23.100.58)
*Dec 7 14:00:41 CET: %SPANTREE-5-ROOTCHANGE: Root Changed for instance 0: New Root Port is Port-channel1. New Root Mac Address is 3822.d6d3.a3f7
------+-------------+-----------+-----------------------------------------------
1 Po1(SU) LACP Gi1/1/4(P) Gi2/1/4(P)
It is connecting to the distribution sw
Switch Ports Model SW Version SW Image Mode
------ ----- ----- ---------- ---------- ----
* 1 41 C9300-24S 17.06.04 CAT9K_IOSXE INSTALL
2 41 C9300-24S 17.06.04 CAT9K_IOSXE INSTALL
interface GigabitEthernet1/1/4
switchport mode trunk
switchport nonegotiate
channel-group 1 mode active
interface GigabitEthernet2/1/4
switchport mode trunk
switchport nonegotiate
channel-group 1 mode active
The DISTRIBUTION SW
DSWPRATUVI136#show spanning-tree
MST0
Spanning tree enabled protocol mstp
Root ID Priority 0
Address 3822.d6d3.a3f7
Cost 2000
Port 3049 (Port-channel1)
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Bridge ID Priority 0 (priority 0 sys-id-ext 0)
Address 748f.c28e.2b80
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Interface Role Sts Cost Prio.Nbr Type
------------------- ---- --- --------- -------- --------------------------------
Ap1/0/1 Desg FWD 20000 128.41 P2p
Ap2/0/1 Desg FWD 20000 128.137 P2p
Po1 Root FWD 2000 128.3049 P2p Bound(RSTP) Pre-STD-Rx
Po6 Desg FWD 10000 128.3054 P2p
7 13:55:01 CET: %PARSER-5-CFGLOG_LOGGEDCMD: User:fibratel logged command:interface TenGigabitEthernet2/1/1
*Dec 7 13:55:20 CET: %SPANTREE-5-ROOTCHANGE: Root Changed for instance 0: New Root Port is Port-channel1. New Root Mac Address is 3822.d6d3.a3f7
*Dec 7 13:55:20 CET: %PARSER-5-CFGLOG_LOGGEDCMD: User:fibratel logged command:shutdown
*Dec 7 13:59:01 CET: %SPANTREE-5-ROOTCHANGE: Root Changed for instance 0: New Root Port is Port-channel1. New Root Mac Address is 3822.d6d3.a3f7
*Dec 7 13:59:29 CET: %SYS-6-LOGOUT: User fibratel has exited tty session 2(172.23.100.58)
*Dec 7 14:00:41 CET: %SPANTREE-5-ROOTCHANGE: Root Changed for instance 0: New Root Port is Port-channel1. New Root Mac Address is 3822.d6d3.a3f7
*Dec 7 14:01:06 CET: %SEC_LOGIN-5-LOGIN_SUCCESS: Login Success [user: fibratel] [Source: 172.23.100.58] [localport: 22] at 14:01:06 CET Thu Dec 7 2023
it is connecting this por channel access sw
6 Po6(SU) LACP Gi1/0/7(P) Gi2/0/7(P)
interface GigabitEthernet1/0/7
switchport mode trunk
switchport nonegotiate
channel-group 6 mode active
end
interface GigabitEthernet2/0/7
switchport mode trunk
switchport nonegotiate
channel-group 6 mode active
end
When i attemp the portchannel 1 in this swich against core SW
The swich acces down
now port 2/1/1 is admin shutdown
1 Po1(SU) - Te1/1/1(P) Te2/1/1(D)
interface TenGigabitEthernet1/1/1
description ENLACE CPD
switchport mode trunk
switchport nonegotiate
channel-group 1 mode on
end
interface TenGigabitEthernet2/1/1
description ENLACE CPD
switchport mode trunk
switchport nonegotiate
shutdown
channel-group 1 mode on
end
Solved! Go to Solution.
ā12-12-2023 12:29 AM
Hi friend
I appreciate your response.
I've managed to resolve this by turning on the mode for active mode.
A HP SW in active mode was on the opposite side.
Thanks
ā12-07-2023 05:46 AM
This issue because one side use old ver. Of IEEE of MST.
There is workaround
spanning-tree mst pre-standard
Above command needed and then shut/no shut this port.
Friend:- this is workaround please read more about it before applying it to your SW.
Good luck
MHM
ā12-12-2023 12:29 AM
Hi friend
I appreciate your response.
I've managed to resolve this by turning on the mode for active mode.
A HP SW in active mode was on the opposite side.
Thanks
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