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Nick Luckner
Beginner

Routing Question for NTP

Ok - here are a few key factors that relate to my question:

-Every switch is a Cisco Layer 3 Switch (3560G)

-All IP VLANS are defined on the drawing attached to this discussing,

-Every port on ESW605-1 switch has an IP of .3 (on the respective vlans that are defined on the sattellite switches)

Here is my question: Right now, every port on the ESW605-1 switch is on a private VLAN. What I need to accomplish is hitting the 192.168.0.10 and 192.168.0.11 IP's on the ESW-NTP-1 switch for NTP time code.

Since ESW605-1 is already configured with multiple VLANs, how do I pass ONLY NTP traffic from each switch on the ESW605-1 switch from the two NTP time servers on the ESW-NTP-1 switch?

What changes need to be done to the Cisco switches and where do I need to add routes?

Thanks you

Nick

3 REPLIES 3
Nick Luckner
Beginner

here is the drawing, not sure why it did not attach before.

Reza Sharifi
Hall of Fame Expert

hard to see the picture

From ESW605-1 switch, are you able to ping the time servers (192.168.0.10 192.168.0.11)?

if you click on the picture, it will enlarge greatly.

Not right now, I havent configured any IP's yet on anything.

End result I am looking to accomplish:

Access to:

192.168.0.0/24 (NTP Server Network)

Access from:

172.33.100.0/24

172.34.100.0/24

172.33.100.0/24

172.25.100.0/24

172.26.100.0/24

172.30.86.0/24

172.30.85.0/24

(Each port that a sattellite switch uplinks into is configured with the respective VLAN ending in .3)

Access limited to only NTP (udp port 123)