Hi
i'm usig GNS3 and i have to deal with this situation:
R5 has NM-1FE-TX modul (connected to R4).
R5 has also NM-16ESW modul (connected to R1,R2 and R3).
here are the config :
R4 :
!
interface FastEthernet0/0
ip address 190.1.1.1 255.255.255.0
duplex auto
speed auto
!
interface FastEthernet2/0
ip address 190.1.2.1 255.255.255.0
duplex auto
speed auto
!
no ip http server
no ip http secure-server
!
ip classless
ip route 191.1.1.0 255.255.255.0 190.1.1.2
ip route 191.1.1.0 255.255.255.0 190.1.2.2
!
!
R5:
ip dhcp excluded-address 191.1.1.1 191.1.1.10
!
ip dhcp pool URNE
network 191.1.1.0 255.255.255.0
default-router 191.1.1.1
!
!
interface FastEthernet0/0
ip address 190.1.1.2 255.255.255.0
duplex auto
speed auto
!
!
interface FastEthernet2/0
ip address 190.1.2.2 255.255.255.0
duplex auto
speed auto
!
!
interface FastEthernet1/11
switchport access vlan 10
!
interface FastEthernet1/12
switchport access vlan 10
!
interface FastEthernet1/13
switchport access vlan 10
!
!
interface Vlan10
ip address 191.1.1.1 255.255.255.0
!
R1 :
!
interface FastEthernet0/0
ip address dhcp
duplex auto
speed auto
!
R2 :
!
interface FastEthernet0/0
ip address dhcp
duplex auto
speed auto
!
R3 :
!
interface FastEthernet0/0
ip address dhcp
duplex auto
speed auto
!
R1#ping 190.1.1.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 190.1.1.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 16/30/52 ms
R1#ping 190.1.2.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 190.1.2.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 16/42/68 ms
R2#ping 190.1.1.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 190.1.1.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 20/39/68 ms
R2#ping 190.1.2.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 190.1.2.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 20/39/60 ms
R3#ping 190.1.1.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 190.1.1.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 20/38/72 ms
R3#ping 190.1.2.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 190.1.2.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 16/32/72 ms
EVREY THING IS FINE :
now i will shutdown interface f0/0 of R5:
R5(config)#interface f0/0
R5(config-if)#sh
R5(config-if)#end
R5#
*Mar 1 00:24:58.887: %SYS-5-CONFIG_I: Configured from console by console
*Mar 1 00:24:59.799: %LINK-5-CHANGED: Interface FastEthernet0/0, changed state to administratively down
R5#
*Mar 1 00:25:00.799: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/0, changed state to down
And i ping from routers R1, R2 and R3 190.1.2.1 (other link :(f2/0-----f2/0)).
R1#ping 190.1.2.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 190.1.2.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 20/32/64 ms
R2#ping 190.1.2.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 190.1.2.1, timeout is 2 seconds:
.....
Success rate is 0 percent (0/5)
R3#ping 190.1.2.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 190.1.2.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 24/53/84 ms
why R2 can't ping but R1 ,R3 can ?
