2013年6月24日星期一

Cisco 881 WAN issue


Question:

I have no access to WAN with my WS-C3750X-12S-S Price cisco 881(Cisco 881 sec K9; IOS 15.0(1)M8). The 881 is in PPPoE

I followed the discussion: https://supportforums.cisco.com/message/3465409#3465409.

I thing my config is almost the same...

But unfortunaly  I can't ping 8.8.8.8 i.ex., from the router.
In the PPP log I saw the login with success to ISP and it receives an IP address.

This is my config:

ip source-route
!
!
ip dhcp excluded-address 192.168.9.1 192.168.9.99
!
ip dhcp pool ccp-pool1
   import all
   network 192.168.9.0 255.255.255.0
   default-router 192.168.9.1
!
!
ip cef
ip name-server 8.8.8.8
no ipv6 cef
!
!
multilink bundle-name authenticated
license udi pid CISCO881-SEC-K9 sn FCZ161991C1
!
!
username pcu privilege 15 secret 5 xxxx.
!
!
!
!
!
!
!
!
!
interface FastEthernet0
!
!
interface FastEthernet1
!
!
interface FastEthernet2
!
!
interface FastEthernet3
!
!
interface FastEthernet4
description $ES_WAN$$FW_OUTSIDE$
no ip address
ip virtual-reassembly
ip tcp adjust-mss 1412
duplex auto
speed auto
pppoe-client dial-pool-number 1
!
!
interface Vlan1
description $ETH-SW-LAUNCH$$INTF-INFO-HWIC 4ESW$$ES_LAN$$FW_INSIDE$
ip address 192.168.9.1 255.255.255.0
ip nat inside
ip virtual-reassembly
!
!
interface Dialer0
ip address dhcp client-id FastEthernet4
ip mtu 1452
ip nat outside
ip virtual-reassembly
encapsulation ppp
dialer pool 1
dialer-group 1
ppp authentication chap pap callin
ppp chap hostname xxx
ppp chap password 7 xxx
ppp pap sent-username xxx@SKYNET password 7 xxx
no cdp enable
!
!
router rip
network 192.168.9.0
no auto-summary
!
ip forward-protocol nd
ip http server
ip http authentication local
ip http secure-server
ip http timeout-policy idle 60 life 86400 requests 10000
!
!
ip dns server
ip nat inside source list 1 interface Dialer0 overload
ip route 0.0.0.0 0.0.0.0 Dialer0
!
access-list 1 remark INSIDE_IF=Vlan1
access-list 1 remark CCP_ACL Category=2
access-list 1 permit 192.168.9.0 0.0.0.255
dialer-list 1 protocol ip permit
no cdp run


!
!
!
!
!
control-plane
!
!
=====================================================
Pierre#sh 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, + - replicated route

Gateway of last resort is 0.0.0.0 to network 0.0.0.0

S*    0.0.0.0/0 is directly connected, Dialer0
      192.168.9.0/24 is variably subnetted, 2 subnets, 2 masks
C        192.168.9.0/24 is directly connected, Vlan1
L        192.168.9.1/32 is directly connected, Vlan1

Answer:

Please use "ip address negotiated" under interface dialer instead of using "ip address dhcp client-id FastEthernet4".
Please use " ip mtu 1492" instead of 1452.

Are you getting a valid IP address WS-C3750V2-48PS-S in the dialer after making those changes?

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