Tek-Tips is the largest IT community on the Internet today!

Members share and learn making Tek-Tips Forums the best source of peer-reviewed technical information on the Internet!

  • Congratulations Mike Lewis on being selected by the Tek-Tips community for having the most helpful posts in the forums last week. Way to Go!

2620's encapsulation failed

Status
Not open for further replies.

Stormfollower

IS-IT--Management
Jun 18, 2010
7
US
thread557-1464278

Following the setup listed on the thread above... I've tried to ping devices on either side of the links.

Setup
computer 1: 10.1.200.101 255.255.255.0 10.1.200.1
router 1, fastethernet0/0: 10.1.200.3 255.255.255.0
router 1, serial0/0: unnumbered fastethernet0/0 (10.1.200.3)

computer 2: 10.1.200.100 255.255.255.0 10.1.200.1
router 2, fastethernet0/0: 10.1.200.2 255.255.255.0
router 2, serial0/0: unnumbered fastethernet0/0 (10.1.200.2)

computer 1 ---> fastethernet0/0 (router 1) --> serial0/0 (as t1, router 1) --> serial0/0 (as t1, router 2) --> fastethernet0/0 (router 2) ---> computer 2

I've done debug arp and debug ip packet detail. The output is encapsulation failed.

ROUTER 2 SETUP
Current configuration : 762 bytes
!
version 12.1
no service single-slot-reload-enable
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname Router2
!
!
!
!
!
!
ip subnet-zero
!
!
!
!
interface FastEthernet0/0
ip address 10.1.200.2 255.255.255.0
no ip route-cache
no ip mroute-cache
speed 100
full-duplex
no cdp enable
!
interface Serial0/0
ip unnumbered FastEthernet0/0
encapsulation ppp
no ip route-cache
no ip mroute-cache
service-module t1 clock source internal
service-module t1 timeslots 1-24
no cdp enable
!
interface Serial0/1
no ip address
shutdown
no cdp enable
!
ip classless
ip route 0.0.0.0 0.0.0.0 Serial0/0
ip http server
!
no cdp run
route-map rtr permit 10
!
!
line con 0
line aux 0
line vty 0 4
login
!
end

ROUTER 1 SETUP
Current configuration : 695 bytes
!
version 12.1
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname Router1
!
!
!
!
!
!
ip subnet-zero
no ip finger
!
!
!
!
interface FastEthernet0/0
ip address 10.1.200.3 255.255.255.0
no ip route-cache
no ip mroute-cache
speed 100
full-duplex
no cdp enable
!
interface Serial0/0
ip unnumbered FastEthernet0/0
encapsulation ppp
no ip route-cache
no ip mroute-cache
service-module t1 clock source internal
service-module t1 timeslots 1-24
no cdp enable
!
ip classless
ip route 0.0.0.0 0.0.0.0 Serial0/0
no ip http server
!
no cdp run
route-map rtr permit 10
!
!
line con 0
transport input none
line aux 0
line vty 0 4
login
!
end
 
Your Ethernet segments are in the same subnet. The router is attempting to resolve the address out its local interface instead of across the WAN. You will need to put the networks in separate subnets.

Router 2
---------
interface FastEthernet0/0
ip address 10.1.200.2 255.255.255.0

Router 1
---------
interface FastEthernet0/0
ip address 10.1.200.3 255.255.255.0
 
Ok. Let me ask this question; can I use these routers to bridge IP's on the same network across the fractional T1 serial0/0? If so what changes do I need to make to the setup above?

Thanks for the help.
 
ok so after reading and reading I figured out I needed to bridge the fastethernet 0/0 and serial 0/0 devices and set up a BVI to make it pass IP's. If anyone wants the setup and links let me know.
 
OK, but why would you want to do that?

/

tim@tim-laptop ~ $ sudo apt-get install windows
Reading package lists... Done
Building dependency tree
Reading state information... Done
E: Couldn't find package windows...Thank Goodness!
 
Status
Not open for further replies.

Part and Inventory Search

Sponsor

Back
Top