Cant ping local router int from router

[dialerstring]

For some reason I can't ping my Dialer interface from inside the router.

RBT1#ping 10.20.22.101

Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 10.20.22.101, timeout is 2 seconds:
.....

Dialer0 is up (spoofing), line protocol is up (spoofing)
Hardware is Unknown

Internet address is 10.20.22.101/24
MTU 1500 bytes, BW 4 Kbit, DLY 40000000 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation PPP, loopback not set
Keepalive set (10 sec)
DTR is pulsed for 1 seconds on reset
Last input 00:49:32, output never, output hang never
Last clearing of "show interface" counters 16w1d
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: weighted fair
Output queue: 0/1000/64/0 (size/max total/threshold/drops)
Conversations 0/1/16 (active/max active/max total)
Reserved Conversations 0/0 (allocated/max allocated)
Available Bandwidth 3 kilobits/sec
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
104 packets input, 7713 bytes
112 packets output, 8562 bytes

interface Dialer0
bandwidth 4
ip address 10.20.22.101 255.255.255.0
encapsulation ppp
no ip mroute-cache
delay 4000000
dialer pool 1
dialer remote-name rbt2
dialer idle-timeout 300
dialer string 11111111
dialer hold-queue 20
dialer load-threshold 1 outbound
dialer-group 1
ppp authentication chap
ppp multilink

debug dialer show the packet at interesting
Nov 12 10:28:00.409: Di0 DDR: ip (s=10.20.22.101, d=10.20.22.101), 100 bytes, outgoing interesting (list 123)
Nov 12 10:28:00.409: DDR: Packet queued

I've verified the acl's also.
thanks


CCNA
Network Admin

 

[burtsbees]

First off, can we see a sh run? Also, can you ping it from the outside? How is it part of a multilink PPP and have the IP address on the dialer interface rather than the ppp multilink VI?

Burt

 

[dialerstring]

There is no VI interface for the PPP multlink. Technically I may not need them b/c I don't have the VI. I just started the position and my first project is getting the ISDN ckts up.

I can't ping it from the outside either and I'm getting an encapsulation failed when ping from the inside. That's a Layer 2 to Layer 3 mis-match somewhere. Ip routing is enabled, no access list is blocking it and I ran a debug ip packet detail for that ip address and the pings don't reply, time out or anything!!! They're being sent but I get encap failed.

CCNA
Network Admin

 

[burtsbees]

ISDN? There are other things needed, like route, acl for interesting traffic, isdn switch type...can't remember encaps, but I think ppp is what you want...will look at my ancient notes and get back to you...

Burt

 

[dialerstring]

Yes Burt you are correct here is a copy of the config. I ommitted the SNMP and Crypto portions. Thanks again

interface Loopback0
ip address 10.200.22.17 255.255.255.252
no ip redirects
!
interface FastEthernet0/0
description $
ip address 10.200.22.25 255.255.255.252 secondary
ip address 10.1.41.1 255.255.255.0
ip accounting output-packets
duplex auto
speed auto
!
interface FastEthernet0/1
no ip address
shutdown
duplex auto
speed auto
!
interface Serial0/0/0
bandwidth 384
no ip address
encapsulation frame-relay IETF
no ip mroute-cache
service-module t1 timeslots 1-6
frame-relay lmi-type cisco
service-policy output ETMS
!
interface Serial0/0/0.100 point-to-point
description MPLS
ip address OUTSIDE IP
ip accounting output-packets
frame-relay interface-dlci 100 IETF
!
interface BRI0/1/0
no ip address
encapsulation ppp
dialer pool-member 1
isdn switch-type basic-ni
isdn spid1 11111111
isdn spid2 1111111
fair-queue
ppp authentication chap
ppp multilink
!
interface Dialer0
bandwidth 4
ip address 10.200.22.29 255.255.255.252
encapsulation ppp
ip summary-address eigrp 1000 10.20.22.101 6 255.255.255.240 100
no ip mroute-cache
delay 4000000
dialer pool 1
dialer remote-name name1
dialer idle-timeout 300
dialer string 11111111
dialer-group 1
fair-queue
ppp authentication chap
ppp multilink
!
router eigrp 10
network 10.0.0.0
no auto-summary
no eigrp log-neighbor-changes
!
router bgp 64515
no synchronization
bgp log-neighbor-changes
network 10.1.41.0 mask 255.255.255.0
network 10.200.22.16 mask 255.255.255.252
aggregate-address 10.200.22.16 255.255.255.240 summary-only
redistribute connected
neighbor "mpls neighbor" remote-as 65553
no auto-summary
!
!


access-list 102 deny eigrp any any
access-list 102 deny udp any any eq snmp
access-list 102 permit udp any any eq ntp time-range RebootHours
access-list 102 deny udp any any eq ntp
access-list 102 deny udp any eq 2049 any
access-list 102 deny udp any eq sunrpc any
access-list 102 deny udp any eq domain any
access-list 102 deny tcp any eq domain any
access-list 102 deny tcp any any eq 161
access-list 102 deny ip any 224.0.0.0 0.255.255.255
access-list 102 deny ip any host 255.255.255.255
access-list 102 permit ip any any
dialer-list 1 protocol ip list 102


CCNA
Network Admin

 

[burtsbees]

Can I assume that there is another ISDN interface in the ppp multilink? You need to take that out if not. Also, can I also assume there are CHAP username and password configured?

Burt

 

[dialerstring]

Yes the CHAP is configured and there are no other ppp multilink interfaces. I only have the ppp multilink on the Bri and Dialer interface. There isn't a VI interface created either.

CCNA
Network Admin

 

[jneiberger]

FYI, when you ping a local interface on a router, the router tries to send the packet down the wire, addressed to itself. If the link is up and routing is configured properly, the ping will succeed. But if the link isn't really up, the ping will fail.

 

[dialerstring]

Well the interface is spoofing so interesting traffic should bring it up. It works on other routers so I don't know what happened.

CCNA
Network Admin

 

[dialerstring]

I created a second dialer interface on the router and was able to ping it. For some reason I can't ping the dialer 0 interface. Nevertheless, I'll keep the di1 interface and chalk it up to being a bug in the IOS.

Thanks for the input and advice guys and or gals. Your help is appreciated.

CCNA
Network Admin

 

[burtsbees]

Come to think of it, I had a similar problem with a dialer interface---di0 would not work, so I created di1, and bam---worked fine. This was for an adsl setup.

Burt

 

[dialerstring]

Through my research I read were someone said it was a bug but I'm running the sam IOS on all routers. HMMM it's working now.

CCNA
Network Admin

 

[burtsbees]

Mine was on a C837, with 12.3 and k9 in it...

Burt