u/Kevin_Cossaboon

▲ 26 r/WMATA

Is there a reason that the silver line crawls up to (or beyond) IAD stop?

Last night it felt like 30mph from second last stop to Ashburn and today heading in there was a massive speed jump after leaving the airport.

Makes me want to drive to Herndon.

reddit.com
u/Kevin_Cossaboon — 7 days ago

UDM is set to

Name VLAN ID Router Subnet DHCP IP Leases Available
Network Elements 1 UDM Pro 01 172.16.1.0/24 None - -
Cameras 254 UDM Pro 01 192.168.254.0/24 Server 0 / 249 249
Jacob Open Network 10 UDM Pro 01 172.16.10.0/24 Server 1 / 249 248
Don't_Panic 40 USW Enterprise 48 P... 10.10.0.0/16 None - -
NAS Backup Network 1011 Third-party Gateway - - - -
Mostly_Harmless 30 UDM Pro 01 10.30.30.0/24 None - -
Deep_Thought 42 USW Enterprise 48 P... 10.42.42.0/24 None - -
delme 33 USW Enterprise 48 P... 192.168.4.0/24 Server - -
Inter-VLAN routing 4040 UDM Pro 01 10.255.253.0/24 - - -
Marvin 55 USW Enterprise 48 P... 10.55.55.0/24 None - -

A host on VLAN40 (10.10.0.0/16) should need to route via the L3 Switch (note the VLAN is set that the gateway is the switch)

I would assume path is VLAN40(L3 switch 10.10.1.1)->VLAN4040 (some IP in 10.255.253.0/24)-> VLAN1 172.16.1.1

But my Mac (IP 10.10.100.6) shows

traceroute to 172.16.1.1 (172.16.1.1), 64 hops max
  1   10.10.1.1  0.721ms  0.495ms  0.440ms
  2   172.16.1.1  0.277ms  0.164ms  0.166ms

Never touches the inter-vlan

Going to another VLAN routed by the UDM it goes through the Inter-VLAN

traceroute 10.30.30.2
traceroute to 10.30.30.2 (10.30.30.2), 64 hops max
  1   10.10.1.1  0.761ms  0.559ms  0.442ms
  2   10.255.253.1  0.279ms  0.223ms  0.225ms
  3   10.30.30.2  96.371ms  2.064ms  1.739ms

to another VLAN on the L3 Switch

traceroute to 10.42.42.2 (10.42.42.2), 64 hops max
  1   10.10.1.1  0.729ms  0.494ms  0.440ms
  2   10.42.42.2  0.466ms  0.206ms  0.197ms

This leads me to believe the the default GW did not get moved to the L3 switch, that it still lives on the UDM. If the UDM is down I can not intervlan route on the switch alone....

reddit.com
u/Kevin_Cossaboon — 14 days ago