From: ccie2be (ccie2be@nyc.rr.com)
Date: Sat Mar 12 2005 - 20:11:49 GMT-3
Hi guys,
I don't get this. Maybe someone can fill me in.
There are a couple of strange things happening.
Notice in the debug output below, when I ping the broadcast address, the
debug shows dest address as 255.255.255.255
not 54.8.7.255 which is the address I actually pinged. Also, notice that
ping's to 54.8.7.254 work fine.
So, I have 2 questions:
Why is the router changing the broadcast address I'm pinging?
And, why isn't the ping to the bcast address working?
Also, notice that the config does include the broadcast keyword which I so
often forget.
Here's the config:
interface Loopback0
ip address 54.8.7.6 255.255.255.0
!
interface ATM0/0
no ip address
no ip route-cache cef
no atm ilmi-keepalive
!
interface ATM0/0.208 point-to-point
pvc 0/208
broadcast
encapsulation aal5snap
protocol ppp Virtual-Template1
!
interface Virtual-Template1
ip unnumbered Loopback0
ppp chap hostname ROUTER6
ppp chap password 0 CISCO
R6#p 54.8.7.254
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 54.8.7.254, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/2/4 ms
R6#p 54.8.7.255
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 54.8.7.255, timeout is 2 seconds:
.....
*Feb 10 21:27:58.687: IP: s=54.8.7.6 (Loopback0), d=255.255.255.255, len
100, un
routable
*Feb 10 21:27:59.735: IP: s=54.8.7.254 (Virtual-Access1), d=224.0.0.10, len
60,
unroutable
*Feb 10 21:28:00.687: IP: s=54.8.7.6 (local), d=255.255.255.255 (Loopback0),
len
100, sending broad/multicast
*Feb 10 21:28:00.687: IP: s=54.8.7.6 (Loopback0), d=255.255.255.255, len
100, un
routable
*Feb 10 21:28:02.687: IP: s=54.8.7.6 (local), d=255.255.255.255 (Loopback0),
len
100, sending broad/multicast
*Feb 10 21:28:02.687: IP: s=54.8.7.6 (Loopback0), d=255.255.255.255, len
100, un
routable
*Feb 10 21:28:04.687: IP: s=54.8.7.6 (local), d=255.255.255.255 (Loopback0),
len
100, sending broad/multicast
*Feb 10 21:28:04.687: IP: s=54.8.7.6 (Loopback0), d=255.255.255.255, len
100, un
routable
TIA, Tim
This archive was generated by hypermail 2.1.4 : Sun Apr 03 2005 - 17:56:45 GMT-3