Using a 4948E switch with FastEthernet1 as the management interface which uses the VRF mgmtVrf. I cannot get DNS resolution to work for some reason.
I am using code enterprise 15.1-2.SG and here are the relevant config snippets:
ip domain-lookup source-interface FastEthernet1
ip domain-name domain.com
ip name-server 126.96.36.199
ip name-server 188.8.131.52
vrf forwarding mgmtVrf
ip address 192.168.20.10 255.255.255.255.0
no ip redirects
no ip unreachables
no ip proxy-arp
ip route vrf mgmtVrf 0.0.0.0 0.0.0.0 192.168.20.1
If I try to ping using a host name it fails, even if I specify to use the VRF.
SWITCH#ping vrf mgmtVrf google.com
Translating "google.com"...domain server (184.108.40.206) (220.127.116.11)
% Unrecognized host or address, or protocol not running.
I read online there are some commands in a different code that support specifying the VRF along with the name servers, but I don't have those options. All I can do is set the source-interface on the domain-lookup command.
I had to open a case with TAC and they told me that the lastest code on the 4948E does not support VRF-aware DNS, and there is no work-around. I ended up having to not use the management interface Fa1 for management, and instead go back to using a VLAN interface riding over the production trunks, since you cannot un-attach Fa1 from the VRF.
Its also possible that scp is not vrf-aware on the 4948. I could not get a "copy scp: bootflash:" to work even when using an IP address for the scp host. Strage that it doesn't work since I do have "ip ssh source-interface FastEthernet1" set in the config. Had to resort to using tftp which is SLOW when trying to copy an image over a WAN link.
The following documents are reviewed on the Ask The Experts Session titled: Use Case Overview and Planning: Cisco DNA Center Project Planning.
Here you can find editable versions of the
Solution Requirements Document UCOP_CiscoDNACenterProjectPlann...
If so, we’d like to speak with you to understand you and your team’s process on how you monitor and troubleshoot network traffic.
We ask that you complete our brief survey: https://ciscoux.az1.qualtrics.com/jfe/form/SV_d4LYJ5oWqWj9CCy Based on your ...
Listen: https://smarturl.it/CCRS8E38 Follow us: twitter.com/CiscoChampionAdding learning capabilities to the internet will increase the overall network SLO and application experience. Real data driven experiments have shown that such an approach...
Listen: https://smarturl.it/CCRS8E37Follow us: twitter.com/ciscochampionSometimes, situations require temporary fixes. Sometimes, the network becomes an afterthought in overall office design and planning. In either situation, it may require netw...
In this special edition of the Insider Series, we hear from Cisco partners who have taken steps to be more eco-friendly and sustainable. We hear what inspires ASHRAE, Southwire, Igor, and NTT to create a workplace that is centered around people and how th...