DHCP & DNS Issues

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DHCP & DNS Issues

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DHCP & DNS Issues
DHCP & DNS Issues
2023-02-14 21:30:46 - last edited 2023-02-14 21:33:16
Model: ER605 (TL-R605)  
Hardware Version: V1
Firmware Version: v1.2.2 beta

I am experiencing some routing issues with my ER605.  Specifically, it's two HP printers that I cannot ping, though they are on the network with reserved IP addresses.  Toying around with netstat, I discovered the following:

 

| =>  netstat -rn

Routing tables

 

Internet:

Destination        Gateway            Flags           Netif Expire

default            192.168.0.1        UGScg             en0       

127                127.0.0.1          UCS               lo0       

127.0.0.1          127.0.0.1          UH                lo0       

169.254            link#15            UCS               en0      !

192.168.0          link#15            UCS               en0      !

192.168.0.1/32     link#15            UCS               en0      !

192.168.0.1        34:60:f9:ee:6b:81  UHLWIir           en0   1179

192.168.0.31       link#15            UHRLWIi           en0      !

192.168.0.105      34:3:de:27:89:73   UHLWI             en0   1134

192.168.0.108      30:45:11:3f:db:41  UHLWI             en0   1195

192.168.0.109      90:70:65:4:f7:44   UHLWI             en0   1160

192.168.0.110      1e:af:46:66:39:a7  UHLWI             en0   1182

192.168.0.112      ca:5c:49:5d:5e:d5  UHLWI             en0    831

192.168.0.114      0:7:a6:26:b1:12    UHLWI             en0   1164

192.168.0.116      22:c0:9d:37:1:75   UHLWI             en0    223

192.168.0.122      92:f9:8f:bd:b9:6a  UHLWI             en0    322

192.168.0.126/32   link#15            UCS               en0      !

192.168.0.132      ac:d5:64:bb:2c:13  UHLWI             en0   1166

 

The address in question is 192.168.0.31, showing link#15, whereas the rest of the devices show their machine ID.  There is also an UI Cloud-Key (UCK-G2-Plus) located behind the router, but does not have routing functions.

 

Please provide some guidance to what may go happening?

 

Thank you,

 

Michael

 

SPARTAN STRONG!

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#1
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8 Reply
Re:DHCP & DNS Issues
2023-02-15 08:58:12

  @Tex_2022 

 

It's interesting, is the IP 192.168.0.31 your pinter's reservation IP?

Is there a switch in your network?

Did you have a entire network layout image?

Just striving to develop myself while helping others.
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#2
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Re:DHCP & DNS Issues
2023-02-16 02:39:35

  @Virgo Thank for the reply and the interest.

 

The ER605 has 3 WAN ports;

 

WAN & WAN/LAN1 load balanced, WAN/LAN2 as a Link Backup.

 

Port 5 goes to my UI USW-Lite-16-PoE switch (Port 9).

 

The following is the network map from the switch:

 

The other interesting thing I stumbled across this evening, is the AP's see the devices:

but still cannot ping them:

 

M

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#3
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Re:DHCP & DNS Issues
2023-02-18 15:15:10

  @Tex_2022 

 

Furthering the investigation, searched for a rogue DHCP server but did not find one:

 

Started with the routers DHCP server on to confirm, then switched it off and rejoined my WiFi network.  After several minutes, I turned the DHCP server back on at the end of the capture.

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#4
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Re:DHCP & DNS Issues
2023-02-18 16:11:30

  @Tex_2022 

 

What beta revision do you have on your router?, this is the latest  I think ER605(UN)_v1_1.2.2_Build 20230208 (Beta)

 

there are several beta versions with 1.2.2

 

 

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#5
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Re:DHCP & DNS Issues
2023-02-18 19:48:20

  @Tex_2022 

 

What subnet mask do you use? Is it 255.255.255.0 (/24) for all interfaces?

Kris K
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#6
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Re:DHCP & DNS Issues
2023-02-19 15:05:23

  @Tex_2022 

 

Confirmed Firmware Version: 1.2.2 Build 20230208 Rel.74570

 

And DHCP is passing the subnet mask 255.255.255.0

 

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#7
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Re:DHCP & DNS Issues
2023-02-20 06:23:56

  @Tex_2022 

 

Can you confirm that the device 0.31 can get the internet and work properly?
Does the router have this device in the DHCP Client list?

 

Do you have set any filter settings like ACLs set on the switch or EAP?

Just striving to develop myself while helping others.
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#8
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Re:DHCP & DNS Issues
2023-02-21 20:47:15

  @Virgo 

 

No ACL's on the switches that I can see...

 

Out of desperation, I purchased a UI ER-X load balancing router.  After some initial issues getting things configured correctly I am able to ping and print to both printers for now.

 

M

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#9
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