Routing HOP COUNTS

[jahanzaib.pgis]

Hi,

When i am trying to tracert one of the Router in LAN, It who "maximum of 30 hops" but in result it show 2 hops?

Please suggest is it routing loop?

S:\>tracert 150.100.20.100

Tracing route to 10.10.1.1 over a maximum of 30 hops

  1    31 ms    <1 ms    <1 ms  150.100.15.1
  2     1 ms     1 ms     1 ms  150.100.20.100

Trace complete.

S:\>

Thanks,

Boby

[Peter Paluch]

Hello Boby,

No, there is no routing loop here. The statement about "a maximum of 30 hops" simply means that the tracert command will display only up to 30 hops to the destination, not more. If the route to the destination is longer than 30 hops, it won't be displayed in its entirety and in such case, you will need to increase the maximum hop limit using the -h switch to the tracert command.

Best regards,

Peter

[garapoglou]

Hi,

If those two hops kept repeating until the maximum number of hops, it would have been a routing loop.

For example:

1    31 ms    <1 ms    <1 ms  150.100.15.1

2     1 ms     1 ms     1 ms  150.100.20.100

3    31 ms    <1 ms    <1 ms  150.100.15.1

4     1 ms     1 ms     1 ms  150.100.20.100

5    31 ms    <1 ms    <1 ms  150.100.15.1

6     1 ms     1 ms     1 ms  150.100.20.100

...and so on.

The case you describe is not a rooting loop, as Peter aready said.

To get to 150.100.20.100 from the device you used you need only 2 hops. In other words, the packet travels through two routers.

Best regards,

Giorgos