From: Edward Balow (ebalow@hotmail.com)
Date: Wed Mar 12 2008 - 09:56:59 ARST
Can you send the output from:
sh frame-relay map
sh ip route
and turn on debug arp during a ping?
> Date: Wed, 12 Mar 2008 07:34:55 -0400> From: dino.picinich@gmail.com> To:
ccielab@groupstudy.com> Subject: IEWB vol.1 - RIP and IP Split Horizon Lab> >
Hi - Strange problem that I can't seem to grasp an understanding on. It's a>
simple frame relay hub and spoke topology with R1 as the hub w/ multipoint>
interface and R4 and R5 as the spokes on main interface. The lab is just>
showing the functionality of split horizon in this environment when running>
RIP over it. The strange thing is if I ping the LAN interfaces from spoke> to
spoke specifying the source as f0/0, I get 100%. If I ping and do not> specify
the source (in this case it will default to S1/0) I only get 50%> success
rate. An ICMP debug from R4 (source in this case pinging> destination R5
f0/0), reveals the following:> > > ICMP: redirect rcvd from 10.0.0.1- for
5.0.0.5 use gw 10.0.0.5> > > I confirmed there is no active frame circuit
between R4 and R5 and confirmed> the path it takes within the network:> > >
Rack1R4#trace 5.0.0.5> > > Type escape sequence to abort.> > Tracing the route
to 5.0.0.5> > > 1 10.0.0.1 4 msec 8 msec 4 msec> > 2 10.0.0.5 8 msec * 20
msec> > Rack1R4#> > > I disabled redirects on the multipoint interface of R1
but get the same 50%> success rate. I did a passive-interface on all of my
f0/0 interfaces but to> no avail. Any help over this hump would be greatly
appreciated.> > > Below are the configs from the three routers:> > >
*******************R1******************> > Rack1R1#sh run> > Building
configuration...> > > Current configuration : 1413 bytes> > !> > version 12.4>
> no service timestamps debug uptime> > no service timestamps log uptime> > no
service password-encryption> > !> > hostname Rack1R1> > !> >
boot-start-marker> > boot-end-marker> > !> > enable password cisco> > !> > no
aaa new-model> > memory-size iomem 5> > no ip cef> > !> > no ip domain lookup>
> !> > interface FastEthernet0/0> > ip address 1.0.0.1 255.0.0.0> > speed 100>
> full-duplex> > !> > interface FastEthernet0/1> > no ip address> > shutdown>
> speed 100> > full-duplex> > !> > interface Serial1/0> > no ip address> > no
ip redirects> > encapsulation frame-relay> > no ip route-cache> > serial
restart-delay 0> > no frame-relay inverse-arp> > !> > interface Serial1/0.1
multipoint> > ip address 10.0.0.1 255.0.0.0> > no ip redirects> > no ip
route-cache> > no ip split-horizon> > frame-relay map ip 10.0.0.4 104
broadcast> > frame-relay map ip 10.0.0.5 105 broadcast> > !> > interface
Serial1/1> > no ip address> > shutdown> > serial restart-delay 0> > !> >
interface Serial1/2> > no ip address> > shutdown> > serial restart-delay 0> >
!> > interface Serial1/3> > no ip address> > shutdown> > serial restart-delay
0> > !> > router rip> > passive-interface FastEthernet0/0> > network 1.0.0.0>
> network 10.0.0.0> > !> > ip forward-protocol nd> > !> > !> > no ip http
server> > no ip http secure-server> > !> > control-plane> > !> > line con 0> >
exec-timeout 0 0> > privilege level 15> > logging synchronous> > line aux 0> >
exec-timeout 0 0> > privilege level 15> > line vty 0 4> > password cisco> >
login> > !> > ***************R4**********************> > > Rack1R4#sh run> >
Building configuration...> > > Current configuration : 1257 bytes> > !> >
version 12.4> > no service timestamps debug uptime> > no service timestamps
log uptime> > no service password-encryption> > !> > hostname Rack1R4> > !> >
boot-start-marker> > boot-end-marker> > !> > enable password cisco> > !> > no
aaa new-model> > memory-size iomem 5> > ip cef> > !> > no ip domain lookup> >
!> > interface FastEthernet0/0> > ip address 4.0.0.4 255.0.0.0> > speed 100> >
full-duplex> > !> > interface FastEthernet0/1> > no ip address> > shutdown> >
speed 100> > full-duplex> > !> > interface Serial1/0> > ip address 10.0.0.4
255.0.0.0> > encapsulation frame-relay> > serial restart-delay 0> >
frame-relay map ip 10.0.0.1 401 broadcast> > frame-relay map ip 10.0.0.5 401>
> no frame-relay inverse-arp> > !> > interface Serial1/1> > no ip address> >
shutdown> > serial restart-delay 0> > !> > interface Serial1/2> > no ip
address> > shutdown> > serial restart-delay 0> > !> > interface Serial1/3> >
no ip address> > shutdown> > serial restart-delay 0> > !> > router rip> >
passive-interface FastEthernet0/0> > network 4.0.0.0> > network 10.0.0.0> > !>
> ip forward-protocol nd> > !> > no ip http server> > no ip http
secure-server> > !> > control-plane> > !> > line con 0> > exec-timeout 0 0> >
privilege level 15> > logging synchronous> > line aux 0> > exec-timeout 0 0> >
privilege level 15> > line vty 0 4> > password cisco> > login> > !> > end> > >
******************R5******************> > > Rack1R5#sh run> > Building
configuration...> > > Current configuration : 1265 bytes> > !> > version 12.4>
> service timestamps debug datetime msec> > service timestamps log datetime
msec> > no service password-encryption> > !> > hostname Rack1R5> > !> >
boot-start-marker> > boot-end-marker> > !> > enable password cisco> > !> > no
aaa new-model> > memory-size iomem 5> > ip cef> > !> > no ip domain lookup> >
!> > interface FastEthernet0/0> > ip address 5.0.0.5 255.0.0.0> > speed 100> >
full-duplex> > !> > interface FastEthernet0/1> > no ip address> > shutdown> >
speed 100> > full-duplex> > !> > interface Serial1/0> > ip address 10.0.0.5
255.0.0.0> > encapsulation frame-relay> > serial restart-delay 0> >
frame-relay map ip 10.0.0.1 501 broadcast> > frame-relay map ip 10.0.0.4 501>
> no frame-relay inverse-arp> > !> > interface Serial1/1> > no ip address> >
shutdown> > serial restart-delay 0> > !> > interface Serial1/2> > no ip
address> > shutdown> > serial restart-delay 0> > !> > interface Serial1/3> >
no ip address> > shutdown> > serial restart-delay 0> > !> > router rip> >
passive-interface FastEthernet0/0> > network 5.0.0.0> > network 10.0.0.0> > !>
> ip forward-protocol nd> > !> > no ip http server> > no ip http
secure-server> > !> > control-plane> > !> > line con 0> > exec-timeout 0 0> >
privilege level 15> > logging synchronous> > line aux 0> > exec-timeout 0 0> >
privilege level 15> > line vty 0 4> > password cisco> > login> > !> > end> >
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