Hi
We have some redundant VSX stacks of CX8360 running 10.10.1090 and we have issues with connectivity to central from the MGMT interface.
My working theory is that the problem is caused by failed DNS lookups (see below)
The interface is configured with a static IP and a static gateway:
interface mgmt
no shutdown
ip static 172.26.0.5/16
default-gateway 172.26.0.1
The config also contains these DNS entries:
ip dns server-address 172.16.10.7 vrf mgmt
ip dns server-address 172.24.10.5 vrf mgmt
ip dns server-address 172.16.10.5 vrf mgmt
But when I login to the switch any attempt at name resolution fails with "temporary name resolution failure" when trying to ping names from MGMT.
The MGMT vrf and interface has internet connectivity as I can ping 8.8.8.8 with the command "ping 8.8.8.8 vrf MGMT"
The same command can also ping all of the DNS servers.
I tried using start-shell and have a look at /etc/resolv.conf, but that contains no DNS servers - regardless if I enter some into the config without the appended "vrf mgmt".
On my other CX switches all entered DNS servers in the config ends up in /etc/resolv.conf
Any idea what causing the DNS resolver issue (and likely the central connectivity issue)?
Cheers.