Unable to access remote machine after network upgrade

Our networks have Mac OSX 10.4 Tiger computers.
Before our company did the switch and router upgrades, I am able to access a remote machine at IP 210.201.12.20 (altered IP for posting)

After traceroute, I get these results for good and bad machines for comparison.



Good machine:

Admin$: root$ traceroute 210.201.12.20

traceroute to 210.201.12.20 (210.201.12.20), 64 hops max, 40 byte packets

1 210.209.12.1 (210.209.12.1) 1.238 ms 0.551 ms 0.425 ms

2 210.209.254.1 (210.209.254.1) 1.678 ms 1.241 ms 1.097 ms

3 210.209.254.2 (210.209.254.2) 1.174 ms 0.949 ms 0.994 ms

4 210.241.50.33 (210.241.50.33) 194.156 ms 184.046 ms 203.759 ms

5 210.240.1.2 (210.240.1.2) 208.150 ms 199.042 ms 172.366 ms

6 210.255.255.1 (210.255.255.1) 148.200 ms 172.827 ms 189.678 ms

7 210.253.1.3 (210.253.1.3) 200.725 ms 184.572 ms 215.703 ms

8 app.com (210.201.12.20) 179.973 ms 172.189 ms 177.798 ms





Bad machine:

admin$ traceroute 210.201.12.20

traceroute to 210.201.12.20 (210.201.12.20), 64 hops max, 40 byte packets

1 210.209.12.1 (210.209.12.1) 1.562 ms 0.553 ms 0.440 ms

2 210.209.254.1 (210.209.254.1) 1.533 ms 1.201 ms 1.028 ms

3 210.209.254.2 (210.209.254.2) 6.138 ms 0.954 ms 0.907 ms

4 210.241.50.33 (210.241.50.33) 69.614 ms 19.054 ms 23.255 ms

5 210.240.1.10 (210.240.1.10) 35.453 ms 48.921 ms 48.752 ms

6 * * *

7 * * *

8 * * *

9 * * *

10 * * *



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Note:


On Intel Mac terminal (Tiger 10.4.11), I ran these commands:

sudo arp -d –a

sudo lookupd –flushcache

And reboot

With no success,
Thanks for any suggestion.

Dave