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Re: M4300 service port segregation issue?

raytracy
Aspirant

M4300 service port segregation issue?

Hi, I faced to a weird issue with M4300 service port, please refer to my diagram at bottom.

The BMC network has no problem before I deploy a new M4300-8x8f.

 

When I configured all port as diagram shown, most of ip on BMC subnet got unresponsive randamly, only M4300 OOB IP accessible without problem.

 

If I shutdown the 10G LACP port at Cisco side (that cut off the communication to M4300 10G port), all BMC ip back to normal operational, but M4300 OOB became unaccessible now.

 

The only possibility what I knew about this situation is layer 2 looping. But according to manual said about M4300 OOB, it has segregated from operational port, and should not caused to STP or looping condition on this diagram.

 

Is there any idea about what is root cause and how can I compromise with it?

 

ps. I did not configured any management IP on M4300, just leave it as default DHCP, and configured service port IP only.
M4300-issues.png

 

 

 

 

 

Model: XSM4316S | M4300-8X8FStackable Managed Switch with 16x10G including 8x10GBASE-T and 8xSFP+ Layer 3
Message 1 of 5
DaneA
NETGEAR Employee Retired

Re: M4300 service port segregation issue?

Hi @raytracy,

 

Welcome to the community! 🙂

 

Kindly answer the questions below:

 

a. What is the LAG state on the 10G LACP ports on both M4300-8X8F and Cisco switch?

b. On the M4300-8X8F, what is the Hash Mode of the LAG? 

c. On the M4300-8X8F, is STP Mode enabled or disabled on the LAG? How about on the Cisco switch?

d. On the M4300-8X8F, are the 10G LACP ports set as tagged ports? 

e. What is the current firmware version of the M4300-8X8F?

 

Let me share the forum thread below and it might help as reference:

 

https://community.netgear.com/t5/Managed-Switches/M4300-x-Switch-to-Switch-LACP-LAG/m-p/1669182

 

 

Regards,

 

DaneA

NETGEAR Community Team

Message 2 of 5
raytracy
Aspirant

Re: M4300 service port segregation issue?

a. Cisco side: LACP link state is ON, and both port are active member.

M4300 side: LACP mode enbled, both port Link status are Link up.

 

b. M4300 LACP Hash mode is: 6?) Src/Dest IP and TCP/UDP port fileds

Cisco side LACP Hash mode is: IP/Mac address

 

c. M4300 LACP set as Trunk allowed VLAN=1-4093, VLAN Tag=disable

Cisco set LACP as Trunk, VLAN 1-20 tagged, 21-4094 Inactive VLAN

BTW, if I blocked the VLAN 1 on Cisco side LACP by set it as Untagged (leave only 2-20 tagged), there is no problem to access all BMC IP, it seems cut off looping issue.

 

d. No, since I don't know how to set M4300 LACP as tagged, I have not configured it yet.

 

e. M4300 firmware version: 12.0.7.10, B1.0.0.11

 

Thanks!

 

Message 3 of 5
DaneA
NETGEAR Employee Retired

Re: M4300 service port segregation issue?

Hi @raytracy,

 

I inquired your concern to the higher tier of NETGEAR Support.  I will post here once I got a feedback. 

 

 

Regards,

 

DaneA

NETGEAR Community Team

Message 4 of 5
DaneA
NETGEAR Employee Retired

Re: M4300 service port segregation issue?

@raytracy,

 

Just a follow-up.  I tried to replicate your concern.  Here below is the network setup I did based on the network diagram you have posted:

 

OOB.jpg

 

I created LACP between the M4300-28G-PoE+ and the M4300-52G using ports 9 & 10 of both switches.  Then, I created VLAN 1010 on the GSM7252PS with ports 39-42 as untagged members. Then, I connected the OOB ports of the M4300-52G and M4300-28G-PoE+ to ports 39 & 40 of the GSM7252PS respectively. I created a DHCP pool for VLAN 1010 on the GSM7252PS (to resemble your BMC network).  

 

Then, I connected a PC to port 42 of the GSM7252PS and was able to obtain an IP address as well as I'm able to get replies when I ping the OOB ports of both M4300-28G-PoE+ and M4300-52G switches.  RSTP is enabled on all switches.  The LACP ports on both M4300-28G-PoE+ and the M4300-52G are still up.  

 

From the replication I did, the NETGEAR switches are working as expected since the ethernet ports and OOB are working independently. 

 

 

Regards,

 

DaneA

NETGEAR Community Team

Model: XSM4316S | M4300-8X8FStackable Managed Switch with 16x10G including 8x10GBASE-T and 8xSFP+ Layer 3
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