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Setting up a route

bcarreker
Cirrus
Cirrus

I'm setting up a new F5 in Azure with the following IPs:

internal self IP: 172.20.0.100

external self IP: 172.20.068

 

Both of these interfaces are displaying as UP.

I have also created a quad zero default route:

Destination: 0.0.0.0

Netmask: 0.0.0.0

Resource : Use Gateway

Gateway Address: 172.20.0.93

 

I am trying to ping my DNS server (also included in my DNS Lookup Server List) at 172.20.0.105. It is pinging from my internal interface, and saying DESTINATION HOST UNREACHABLE. Telnet does not work (of course) and displays NO ROUTE TO HOST.

 

Is there something else I'm missing here?

7 REPLIES 7

Philippe_CLOUP
F5 Employee
F5 Employee

Hi bcarreker,

can you confirm your internal and external self IPs and netmasks ? As it is unclear why you define them in the same network if i read correctly.

0691T000005oa1UQAQ.png

Yoann_Le_Corvi1
Cumulonimbus
Cumulonimbus

Hi

 

The VLAN configuration could also be of use.

 

Yoann

bcarreker
Cirrus
Cirrus

Hello, I've included the VLANs below.0691T000005oaBZQAY.png0691T000005oaBFQAY.png

Yoann_Le_Corvi1
Cumulonimbus
Cumulonimbus

Hmm strange...

 

Just to make sure, just run :

 

netstat -nr

 

via SSH

 

Then ping the default gateway, and run

 

arp -an

 

Might be something wrong at L2, but if so might be on azure's side ?

Yoann

0691T000005oaM3QAI.png0691T000005oaLyQAI.png0691T000005oaLtQAI.png

bcarreker
Cirrus
Cirrus

The ARP command returned a lot. I copied the first page of it. ​I think it may be an issue with azure as well. I'm not entirely sure though.