From: Brian Dennis (routeflap@xxxxxxxx)
Date: Thu Jan 25 2001 - 21:45:14 GMT-3
It's called "ip classless".
You have the network 137.7.0.0 configured on that router. You have traffic
going to 137.7.3.3 which is on a subnet that's not on that router and the
entry for that subnet is not in your routing table. If you have "no ip
classless" (default with 11.2 or below) configured the traffic is dropped
(considered unroutable) whether or not you have a default route. If you have
classless on (default with 11.3 or above), the default route is used.
http://www.cisco.com/univercd/cc/td/doc/product/software/ios112/112cg_cr/5rb
ook/5rip.htm#xtocid2327333
Brian Dennis
CCIE #2210 (R&S)(ISP/Dial)
CCSI #98640
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
Ronnie Royston
Sent: Thursday, January 25, 2001 4:15 PM
To: ccielab@groupstudy.com
Subject: Experiencing Difficulties w/ static routing
My table has a static default, but when I debug IP packet, the ping shows up
'unroutable'???
Gateway of last resort is 137.7.11.3 to network 0.0.0.0
137.7.0.0/16 is variably subnetted, 2 subnets, 2 masks
C 137.7.11.0/24 is directly connected, BRI0
C 137.7.5.5/32 is directly connected, Loopback0
198.80.2.0/32 is subnetted, 1 subnets
C 198.80.2.5 is directly connected, Loopback1
S* 0.0.0.0/0 [200/0] via 137.7.11.3
r2#ping 137.7.11.3 **R1's side of BRI link**
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 137.7.11.3, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 36/37/40 ms
r2#ping 137.7.3.3 **R1's loopback**
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 137.7.3.3, timeout is 2 seconds:
.....
Success rate is 0 percent (0/5)
r2#
IP: s=137.7.11.5 (local), d=137.7.3.3, len 100, unroutable
IP: s=137.7.11.5 (local), d=137.7.3.3, len 100, unroutable
IP: s=137.7.11.5 (local), d=137.7.3.3, len 100, unroutable
IP: s=137.7.11.5 (local), d=137.7.3.3, len 100, unroutable
IP: s=137.7.11.5 (local), d=137.7.3.3, len 100, unroutable
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