[c-nsp] using the first and last ip address of a range > /24 in a local pool

[David Prall]

> > I even attempted to reproduce the problem with an XP (SP2)
> workstation
> > on a .255 myself, no success. Initiating and receiving connections
> > from other XP workstations worked just fine, on- and off-net.
> 
> Try connecting from a XP workstation to a .255 target address that is
> on a
> class "C" address. It will fail every time - doesn't even attempt to
> send
> the packet. That is the buggy behaviour in question. XP assumes that
> the
> remote endpoint has a classful subnet mask whereas it shouldn't
> actually
> care.
> 
> B.
>


Wrong, running XP SP2

D:\Tracking>tracert 192.0.2.255

Tracing route to 192.0.2.255 over a maximum of 30 hops

  1     1 ms     1 ms     1 ms  stealth-10-32-254-25.cisco.com
[10.32.254.25]
  2     *        *        *     Request timed out.
  3     *        *        *     Request timed out.
  4     *        *        *     Request timed out.
 
Next hop has uRPF and BOGON Filtering

D:\Tracking>tracert 220.1.1.255

Tracing route to softbank220001001255.bbtec.net [220.1.1.255]
over a maximum of 30 hops:

  1     1 ms     1 ms     1 ms  stealth-10-32-254-25.cisco.com
[10.32.254.25]
  2     2 ms     2 ms     2 ms  192.168.66.1
  3     3 ms     4 ms    20 ms  192.168.255.25
  4     2 ms     2 ms     2 ms  192.168.255.9
  5    15 ms    14 ms    13 ms  dsl092-168-001.wdc2.dsl.speakeasy.net
[66.92.168.1]
  6    20 ms    13 ms    12 ms  220.ge-0-1-0.cr2.wdc1.speakeasy.net
[69.17.83.45]
  7    16 ms    12 ms    12 ms  10gigabitethernet2-2.core1.ash1.he.net
[206.223.115.37]
  8    96 ms    98 ms    99 ms  10gigabitethernet1-4.core1.pao1.he.net
[72.52.92.29]
  9   210 ms   193 ms   206 ms
SoftbankTelecom.10gigabitethernet2-2.core1.pao1.he.net [216.218.244.234]
 10   193 ms   193 ms   193 ms  sto-gw2-pos2-0.gw.odn.ad.jp
[210.142.163.169]
 11   197 ms   197 ms   197 ms  STOrw-51T2-1.nw.odn.ad.jp [143.90.33.90]
 12   193 ms   194 ms   193 ms  STOrz-02So0-0-0.nw.odn.ad.jp
[143.90.144.126]
 13   201 ms   201 ms   200 ms  238.143090232.odn.ne.jp [143.90.232.238]
 14

David

--
http://dcp.dcptech.com