10-13-2011 12:57 AM - edited 03-04-2019 01:55 PM
This is kicking my ass.. Please help me.
An 1841 is conencted to the internet by DSL, it works fine. I have added it to the 10.98.8.x subnet off a 3750 switch.
When I connect other devices to the same switch port, I can ping/browse to them fine, but when I connect the 1841 I can only ping it from the 3750, not another subnet connected to the same router.
Here's the 1841 config:
version 12.4
no service pad
service tcp-keepalives-in
service tcp-keepalives-out
service timestamps debug datetime msec localtime show-timezone
service timestamps log datetime msec localtime show-timezone
service password-encryption
service sequence-numbers
hostname ADSL1841
boot-start-marker
boot system flash:/c1841-advipservicesk9-mz.124-22.T1.bin
boot-end-marker
logging message-counter syslog
logging buffered 51200
enable secret 5 $1$qZO0$nP19varmjKm89.UVXNO260
no aaa new-model
clock timezone PCTime 8
dot11 syslog
no ip source-route
ip cef
no ip bootp server
ip domain name adsl1841.com
multilink bundle-name authenticated
archive
log config
hidekeys
ip tcp synwait-time 10
no ip ftp passive
interface FastEthernet0/0
description $ES_LAN$
ip address 10.98.8.254 255.255.255.0
no ip redirects
no ip unreachables
no ip proxy-arp
ip flow ingress
ip nat inside
ip virtual-reassembly
ip tcp adjust-mss 1412
duplex auto
speed auto
no mop enabled
interface FastEthernet0/1
no ip address
no ip redirects
no ip unreachables
no ip proxy-arp
ip flow ingress
shutdown
duplex auto
speed auto
no mop enabled
interface ATM0/0/0
no ip address
no ip redirects
no ip unreachables
no ip proxy-arp
ip flow ingress
atm ilmi-keepalive
bundle-enable
interface ATM0/0/0.2 point-to-point
no ip redirects
no ip unreachables
no ip proxy-arp
ip flow ingress
pvc 8/35
pppoe-client dial-pool-number 1
interface Dialer1
ip address negotiated
no ip redirects
no ip unreachables
no ip proxy-arp
ip mtu 1452
ip flow ingress
ip nat outside
no ip virtual-reassembly
encapsulation ppp
dialer pool 1
ppp authentication chap pap callin
ppp chap hostname **********
ppp chap password 7 12412D191759080F2C01
ppp pap sent-username ********
ip forward-protocol nd
ip route 0.0.0.0 0.0.0.0 Dialer1
ip http server
no ip http secure-server
ip nat inside source list 1 interface Dialer1 overload
logging trap debugging
access-list 1 permit any
dialer-list 1 protocol ip permit
snmp-server community cisco RW
control-plane
line con 0
line aux 0
line vty 0 4
password 7 0207175F0D575D7218
login
scheduler allocate 4000 1000
end
And the switch its connected to:
show ip route
Codes: C - connected, S - static, R - RIP, M - mobile, B - BGP
D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
E1 - OSPF external type 1, E2 - OSPF external type 2
i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2
ia - IS-IS inter area, * - candidate default, U - per-user static route
o - ODR, P - periodic downloaded static route
Gateway of last resort is 10.98.0.2 to network 0.0.0.0
10.0.0.0/8 is variably subnetted, 5 subnets, 2 masks
C 10.98.8.0/24 is directly connected, Vlan600
C 10.98.0.0/24 is directly connected, Vlan100
C 10.98.2.0/25 is directly connected, Vlan200
C 10.98.7.0/24 is directly connected, Vlan400
S 10.98.2.128/25 [1/0] via 10.98.2.2
C 192.168.1.0/24 is directly connected, Vlan900
S* 0.0.0.0/0 [1/0] via 10.98.0.2
switch#ping 10.98.8.254
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 10.98.8.254, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/2/8 ms
Thanks!!!
Solved! Go to Solution.
10-13-2011 01:27 AM
Kyle
Do you mean you can't ping the router from another subnet on the 3750 switch ? If so you need to tell the 1841 about the subnets on the 3750.
Either -
1) run a dynamic routing protocol between your switch and the router. If you have IP Services on the switch then you can use EIGRP/OSPF. If you only have IP Base you are restricted to RIP.
or
2) Just add static routes to the 1841 eg.
ip route 10.98.0.0 255.255.255.0 10.98.8.x <-- where x is the address on the 3750 in vlan 600
ip route 10.98.2.0 255.255.255.128 10.98.8.x
etc.. for each subnet on the 3750
or you could just use a summary address ie.
ip route 10.98.0.0 255.255.0.0 10.98.8.x
Jon
10-13-2011 01:27 AM
Kyle
Do you mean you can't ping the router from another subnet on the 3750 switch ? If so you need to tell the 1841 about the subnets on the 3750.
Either -
1) run a dynamic routing protocol between your switch and the router. If you have IP Services on the switch then you can use EIGRP/OSPF. If you only have IP Base you are restricted to RIP.
or
2) Just add static routes to the 1841 eg.
ip route 10.98.0.0 255.255.255.0 10.98.8.x <-- where x is the address on the 3750 in vlan 600
ip route 10.98.2.0 255.255.255.128 10.98.8.x
etc.. for each subnet on the 3750
or you could just use a summary address ie.
ip route 10.98.0.0 255.255.0.0 10.98.8.x
Jon
10-13-2011 02:46 AM
I should have known that,
Thanks for your help!!!
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