12-11-2021 11:28 AM - edited 12-11-2021 11:36 AM
Hi,
We used default of Spanning Tree RPVST on 2x C9200 in Primary Site and Backup Site and would like to use these more effectively to prevent the STP loop and single port loop.
We would like to set this followed STP Root Priorty Primary and Secondary.
As our Setting as below:
Primary Site C9200 --> Etherchannel(Trunk) --> C9200 --> Temp (Trunk Lan) --> Backup site
C9200 --> Etherchannel(Trunk) --> C9200
Layer 2 Vlan setting without IP
SW1,2,3,4
Vlan 101
Vlan 102
Vlan 103
Vlan 104
As We only allow 101 -102 on etherchannel to other switch and trunk to backup Site,
Trunk to other backup Site
Trunk allowed Vlan 101 - 102
Trunk Mode
Layer 2 Etherchannel
Trunk allowed Vlan 101 - 102
Trunk Mode
SW1: PO1 Active
SW2: PO2 Active
SW3: PO3 Active
SW4: PO4 Active
As RPSVT+/PSVT used Per Vlan Spanning Tree. We only allow 101 -102 on ether channel trunk to backup Site,
Do we need to set as follow or just set 101 - 102 as root Primary and secondary? Other Vlan access ports are Portfast and Bpduguard enable. As I known, all vlan must set on Spanning Tree to Prevent the switch loop,
Would you have any suggestion?
Primary Site
SW1 101-102 Primary
103 -104 secondary
SW2 103 -104 Primary
101 - 102 secondary
Backup Site
SW1 101-102 Primary
103 -104 secondary
SW2 103 -104 Primary
101 - 102 secondary
12-11-2021 11:54 AM
follow
12-12-2021 07:11 AM
If I am getting it properly, you are asking for design recommendations but the above-mentioned information is not enough for us. So I am looking for more information.
12-12-2021 09:26 AM
Hi Deepak,
We would like set the RPVST two switches 9200L on each site.
EVGN is our main site
CAVC is our Backup Site
All setting that we use an Layer 2 setting in Etherchannel, Vlan, Trunk (Metro E) to other backup site.
All switches only management port have IP address, other than is Layer 2 setting without IP.
It used Esxi server to connect with other devices such as SIP, Internal, PBL server or PC.
Vlan 101 Operations, Administration, and Maintenance P 1 -12
Vlan 102 Public P 19 - 24
Vlan 103 SIP 1 P 25 - 30
Vlan 104 SIP 2 P 31 - 47
Metro E (Trunk): P 45
EtherChannel (Active,Active): P45 -47
Metro E will change to Fiber P1
Remote PC: P48 (Vlan 101)
Management (Switch 9200 and 9300) : P13 -16 (Vlan 101)
Current setting.
1. We set on Switch STP mode RPVST default and we did not set the STP Root priority of Vlan Primary and Secondary.
2. Vlan 101 -104 has set on Switches.
3. Etherchannel (active active )set trunk allowed Vlan 101 -102 and trunk mode on P 47 - 48 to connected Switch 2 9200L with same site.
4. Metro E Trunk allowed Vlan 101 - 102 and trunk mode only set on P45 on Switch 1 and Switch 2 for internetwork to connect to backup set.
STP Rapid PVST
P45 or later (Fiber P1) use for Metro E (CWDM) to connect to Backup site.
At same site, all esxi servers (SIP1, SIP2, PBL, INT) crossed to switch 1 and switch 2 at the same sites (Main site and Backup site)
Do we also set on one of remote PC port for Port-Security, storm control to prevent the loop for STP or switchport itself if we use PC port for remote or Wireshark purpose?
As these Setting, As I known, it is not enough to prevent Loop issue and we know that we still got some setting that we did not add on switches.
Main Site
SW1 101-102 Primary
103 -104 secondary
SW2 103 -104 Primary
101 - 102 secondary
Backup Site
SW1 101-102 Primary
103 -104 secondary
SW2 103 -104 Primary
101 - 102 secondary
what are your recommendation on our setting?
Best Regards,
Gary
12-14-2021 03:46 AM
Hi Deepak,
We find out
Main site Backup Site
Switch 1A --> Trunk (allowed 101 - 102) --> Switch 2A
/\ /\
|| ||
Etherchannel 1(Trunk Allowed 101 -102) Etherchannel 2(Trunk Allowed 101 -102)
|| ||
\/ \/
Switch 1B --> Trunk (allowed 101 - 102) --> Switch 2B
This RPVST RTP formed the Trunk Loop on VLan 101 and Vlan 102, but it did not form a blocked state as Link.
We still need to fix on this issue.
Do you have any suggestion on that?
Discover and save your favorite ideas. Come back to expert answers, step-by-step guides, recent topics, and more.
New here? Get started with these tips. How to use Community New member guide