AC66U_B1 problems

[ololo]

Hello
Have this router AC66U_B1 and test setup of HPE Aruba switches in stacking and several servers connected to the stack.
Asus switch has 192.168.0.0/24,
HP stack 10.10.10.0/24
On HP one port that is connected to Asus has configured ip 192.168.0.200.
On Asus router configured static route 10.10.10.0/24 over 192.168.0.200 LAN

Problem:
Time to time Asus router stops any ping/traffic to and from network 10.10.10.0/24 which is running on HPE stack. Then it's up back by itself. Nothing in the logs. HPE stack of course works fine, the issue is exactly on Asus router, it just stops routing. It has latest merlin firmware.
What a hell could be? Thank you.

 

[L&LD]

Are we talking about the RT-AC66U_B1? Please update the title if it is.

What is the latest firmware, exactly? Version 384.15_0, one of the Alpha 1's, or other?

When the RMerlin firmware was flashed, did a full reset/initialize take place, followed by minimal and manual config without using any saved backup files and/or carried over old customizations from previous firmware?

 

[ololo]

Are we talking about the RT-AC66U_B1? Please update the title if it is.

What is the latest firmware, exactly? Version 384.15_0, one of the Alpha 1's, or other?

When the RMerlin firmware was flashed, did a full reset/initialize take place, followed by minimal and manual config without using any saved backup files and/or carried over old customizations from previous firmware?

Hello
Yes, it is this router.
Firmware 384.15_0
Full reset was done before merling firmware was installed some releases ago.
No customization/scripts/whatever is done

 

[L&LD]

Full reset with 'Initialize all settings...' needs to be done after flashing the firmware you want to use.

Followed by a minimal and manual configuration to secure the router and connect to your ISP. Do not use a saved settings file nor blindly manually copy back the settings you may have used in the past without fully testing them to be 1) Worthy and 2) Needed and 3) Stable on the latest firmware.

 

[ololo]

Full reset with 'Initialize all settings...' needs to be done after flashing the firmware you want to use.

Followed by a minimal and manual configuration to secure the router and connect to your ISP. Do not use a saved settings file nor blindly manually copy back the settings you may have used in the past without fully testing them to be 1) Worthy and 2) Needed and 3) Stable on the latest firmware.

Hello
Right, i did that after flashed with merlin firmware, sorry for confusion

Today what i found out:
(port 1/47 on HP stack is the one that is connected to the ASUS router)

On HP stack:

# show mac-address
Status and Counters - Port Address Table
MAC Address Port VLAN
----------------- ------------------------------- ----
00089b-f8c73f 1/47 1
0c9d92-5466f0 1/47 1
68a40e-170420 1/47 1
68a40e-2c738a 1/47 1
68a40e-2fa2ee 1/47 1
985fd3-3e358f 1/47 1
ac5d5c-7e6c46 1/47 1

On ASUS:

# arp

? (192.168.0.200) at 64:bc:0c:80:7b:2d [ether] on br0

Some time later

# arp
? (192.168.0.200) at 70:10:6f:8c:4d:45 [ether] on br0


During the period when ARP table has somehow changed by itself - there was again no routing.

Somehow ASUS is getting some new MAC for that IP, getting confused and stops routing at all.

First MAC 64:BC:0C:80:7B:2D is configured on ASUS in DHCP to get 192.168.0.200
Second doesn`t exist anywhere at all

What can i do about it?

 

[ColinTaylor]

On ASUS:

# arp

? (192.168.0.200) at 64:bc:0c:80:7b:2d [ether] on br0

Some time later

# arp
? (192.168.0.200) at 70:10:6f:8c:4d:45 [ether] on br0


During the period when ARP table has somehow changed by itself - there was again no routing.

Somehow ASUS is getting some new MAC for that IP, getting confused and stops routing at all.

First MAC 64:BC:0C:80:7B:2D is configured on ASUS in DHCP to get 192.168.0.200
Second doesn`t exist anywhere at all

What can i do about it?

This appears to be a misconfiguration?

You said "64:BC:0C:80:7B:2D is configured on ASUS in DHCP to get 192.168.0.200". This MAC is for an LG mobile.

But you also said "On HP one port that is connected to Asus has configured ip 192.168.0.200". This port is presumably 70:10:6f:8c:4d:45.

So you have configured the same IP address for the HP switch that is used for the LG.

 

[ololo]

This appears to be a misconfiguration?

You said "64:BC:0C:80:7B:2D is configured on ASUS in DHCP to get 192.168.0.200". This MAC is for an LG mobile.

But you also said "On HP one port that is connected to Asus has configured ip 192.168.0.200". This port is presumably 70:10:6f:8c:4d:45.

So you have configured the same IP address for the HP switch that is used for the LG.

Hello

Thank you for pointing to this
Actually this LG mobile device is connected to the guest network, and i cannot even see its IP in the DHCP so that i could manually assign it. It`s not possible for the devices connected to the guest network?

However will try to shutdown wifi on that device and check it it will interrupt routing again to the HP stack

 

[ColinTaylor]

It`s not possible for the devices connected to the guest network?

The router itself can always arp devices on the guest network otherwise there wouldn't be any communication for things like DHCP and DNS.

 

[ololo]

The router itself can always arp devices on the guest network otherwise there wouldn't be any communication for things like DHCP and DNS.

Sure, i mean not this.
I cannot see this MAC in the DHCP list, even for offline clients.