2821 and 3550 with DHCP

shimabukushimabuku Member Posts: 13 ■□□□□□□□□□
in CCNP
For some reason I am unable to get o fut to the internet with my laptop. From the 2821 I can ping out just fine. I enabled DHCP on the 3550 and am able to pull a proper ip address. I also can ping the default gateway and router from my laptop but not any further. Currently I am trying implement intervlan routing on the 3550 but am stumped and have no clue what to do from here. Any help would be greatly appreciated. Below are the running configs for the switch and router.
WS-C3550-48-EMI

Building configuration...

Current configuration : 4341 bytes
!
version 12.2
no service pad
service timestamps debug datetime msec
service timestamps log datetime msec
service password-encryption
!
hostname SWITCH
!
!
username pepsi privilege 15 password 7 095F5B130C0E1E445E
no aaa new-model
ip subnet-zero
ip routing
ip dhcp excluded-address 10.0.2.1 10.0.2.99
!
ip dhcp pool VLAN100
network 10.0.2.0 255.255.255.0
default-router 10.0.2.1
dns-server 8.8.8.8
!
vtp mode transparent
!
!
!
!
!
spanning-tree mode pvst
spanning-tree extend system-id
!
vlan internal allocation policy ascending
!
vlan 99
name VLAN99
!
vlan 100
name VLAN100
!
interface FastEthernet0/47
switchport access vlan 100
switchport mode access
spanning-tree portfast
!
interface FastEthernet0/48
no switchport
ip address 10.0.1.2 255.255.255.0
!
!
interface Vlan1
no ip address
shutdown
!
interface Vlan100
ip address 10.0.2.2 255.255.255.0
no ip redirects
standby 1 ip 10.0.2.1
standby 1 preempt
!
ip default-gateway 10.0.1.1
ip classless
ip http server
ip http secure-server

----

SWITCH#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 not set

10.0.0.0/24 is subnetted, 2 subnets
C 10.0.2.0 is directly connected, Vlan100
C 10.0.1.0 is directly connected, FastEthernet0/48


CISCO2821

Building configuration...


Current configuration : 1471 bytes
!
! Last configuration change at 07:01:26 UTC Thu Aug 29 2013 by nohara
!
version 15.1
service timestamps debug datetime msec
service timestamps log datetime msec
service password-encryption
!
hostname ROUTER
!
boot-start-marker
boot-end-marker
!
no aaa new-model
!
!
dot11 syslog
ip source-route
!
ip cef
!
no ipv6 cef
!
multilink bundle-name authenticated
!
voice-card 0
!
crypto pki token default removal timeout 0
!
license udi pid CISCO2821 sn FTX1112A4EE
username pepsi privilege 15 password 7 105D1C03101C1B5D59
!
redundancy
!
interface GigabitEthernet0/0
description <==WAN==>
ip address dhcp
ip nat outside
ip virtual-reassembly in
duplex auto
speed auto
no cdp enable
!
interface GigabitEthernet0/1
description <==LAN==>
ip address 10.0.1.1 255.255.255.0
ip nat inside
ip virtual-reassembly in
duplex auto
speed auto
!
ip forward-protocol nd
no ip http server
no ip http secure-server
!
!
ip nat inside source list 1 interface GigabitEthernet0/1 overload
ip route 0.0.0.0 0.0.0.0 GigabitEthernet0/0
ip route 10.0.2.0 255.255.255.0 GigabitEthernet0/1
!
logging esm config
access-list 1 permit 10.0.1.0 0.0.0.255
access-list 1 permit 10.0.2.0 0.0.0.255

Router#show ip route
Codes: L - local, 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, H - NHRP, l - LISP
+ - replicated route, % - next hop override

Gateway of last resort is 0.0.0.0 to network 0.0.0.0

S* 0.0.0.0/0 is directly connected, GigabitEthernet0/0
10.0.0.0/8 is variably subnetted, 4 subnets, 2 masks
C 10.0.1.0/24 is directly connected, GigabitEthernet0/1
L 10.0.1.1/32 is directly connected, GigabitEthernet0/1
S 10.0.2.0/24 is directly connected, GigabitEthernet0/1
S 10.100.0.1/32 [254/0] via 99.91.24.1, GigabitEthernet0/0
99.0.0.0/8 is variably subnetted, 2 subnets, 2 masks
C 99.91.24.0/21 is directly connected, GigabitEthernet0/0
L 99.91.29.77/32 is directly connected, GigabitEthernet0/0
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Comments

  • Dieg0MDieg0M Member Posts: 861
    Don't use default-gateway command on L3 switch with Ip routing enabled. Use ip route 0.0.0.0 0.0.0.0 10.0.1.1.
    Follow my CCDE journey at www.routingnull0.com
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  • shimabukushimabuku Member Posts: 13 ■□□□□□□□□□
    Thanks Dieg0m! That was part of the issue, below are the changes I made to get it working.

    Switch:
    Remove ip default-gateway 10.0.1.1 and replace with ip route 0.0.0.0 0.0.0.0 10.0.1.1

    Router:
    Remove ip route 10.0.2.0 255.255.255.0 gi0/1 and replace with ip route 10.0.2.0 255.255.255.0 10.0.1.2
    Remove ip route 0.0.0.0 0.0.0.0 gi0/0 and replace with ip route 0.0.0.0 0.0.0.0 dhcp
    Remove ip nat inside source list 1 interface GigabitEthernet0/1 overload and replace with ip nat inside source list 1 interface GigabitEthernet0/0 overload
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  • Dieg0MDieg0M Member Posts: 861
    I didn't even check your router config as I was assuming you were sourcing your ping from NAT inside interface. Glad it worked out.
    Follow my CCDE journey at www.routingnull0.com
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