07-04-2009 08:03 AM - edited 03-04-2019 05:19 AM
Hello,
I wanted to configure Router on Stick. But I can't inter communicate in two vlans, both vlans can ping their own default gateways but can't ping each other default getways. I'll appreciate if some one plz help me that were im doing mistake so i'm not be able to do inter vlan communication?
I'm using Cisco Switch 2950 and Cisco Router 3660.
I can ping the default gateway of my 172.12.2.1
But I can't ping the other vlan's default geteway 172.12.4.1
The configuration of my router and switch are:
Router # show run
version 12.2
!
hostname Router
interface FastEthernet0/0
no ip address
duplex auto
speed auto
!
interface FastEthernet0/0.2
encapsulation dot1Q 2
ip address 172.12.2.1 255.255.255.0
!
interface FastEthernet0/0.4
encapsulation dot1Q 4
ip address 172.12.4.1 255.255.255.0
!
Router#show interface fa0/0
FastEthernet0/0 is up, line protocol is up
Hardware is AmdFE, address is 000d.281c.64a0 (bia 000d.281c.64a0)
MTU 1500 bytes, BW 100000 Kbit, DLY 100 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation 802.1Q Virtual LAN, Vlan ID 1., loopback not set
Keepalive set (10 sec)
Switch#show inter trunk
Port Mode Encapsulation Status Native vlan
Fa0/1 on 802.1q trunking 1
Port Vlans allowed on trunk
Fa0/1 1-4094
Port Vlans allowed and active in management domain
Fa0/1 1-2,4
Port Vlans in spanning tree forwarding state and not pruned
Fa0/1 1-2,4
Switch#show vlan bri
VLAN Name Status Ports
---- -------------------------------- --------- -------------------------------
1 default active Fa0/3, Fa0/5, Fa0/6, Fa0/7
Fa0/8, Fa0/9, Fa0/10, Fa0/11
Fa0/12
2 VLAN0002 active Fa0/2
4 VLAN0004 active Fa0/4
Switch#show interface fa0/2
FastEthernet0/2 is up, line protocol is up (connected)
Hardware is Fast Ethernet, address is 000b.5fde.d0c2 (bia 000b.5fde.d0c2)
MTU 1500 bytes, BW 100000 Kbit, DLY 100 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Full-duplex, 100Mb/s, media type is 100BaseTX
Switch#show interface fa0/4
FastEthernet0/4 is up, line protocol is up (connected)
Hardware is Fast Ethernet, address is 000b.5fde.d0c4 (bia 000b.5fde.d0c4)
MTU 1500 bytes, BW 100000 Kbit, DLY 100 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Full-duplex, 100Mb/s, media type is 100BaseTX
C:\>ping 172.12.2.1
Pinging 172.12.2.1 with 32 bytes of data:
Reply from 172.12.2.1: bytes=32 time=2ms TTL=255
Reply from 172.12.2.1: bytes=32 time=1ms TTL=255
Reply from 172.12.2.1: bytes=32 time<1ms TTL=255
Reply from 172.12.2.1: bytes=32 time<1ms TTL=255
Ping statistics for 172.12.2.1:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 0ms, Maximum = 2ms, Average = 0ms
C:\>ping 172.12.4.1
Pinging 172.12.4.1 with 32 bytes of data:
Request timed out.
Request timed out.
Request timed out.
Request timed out.
Ping statistics for 172.12.4.1:
Packets: Sent = 4, Received = 0, Lost = 4 (100% loss),
Thank you
Regards
Ali
Solved! Go to Solution.
07-06-2009 08:08 AM
Although I hate Vista (I considered beta of Windows 7 code). But I don't think they will cause the problem :)
Check this link and see what you may have missed http://www.cisco.com/en/US/tech/tk389/tk815/technologies_configuration_example09186a00800949fd.shtml
07-04-2009 08:33 AM
Hello Ali,
basic question:
have you configured the default gateway on the PCs?
b)
if no default-gateway is configured on the PCs you need
int f0/0.2
ip proxy-arp
int f0/0.4
ip proxy-arp
to fix this
you can use the following commands to troubleshoot the issue:
sh vlan on the router shows packets for each vlan
debug arp
debug ip icmp
terminal monitor
see if anything is received by the router
when you attempt to ping 172.12.4.1 from PC1.
Hope to help
Giuseppe
07-05-2009 07:36 AM
If after you have done as giuslar suggested, you might read this (found on Cisco Learning Network):
http://blogs.msdn.com/p2p/archive/2007/07/03/ping.aspx
I found the article interesting, never would of tried the step in the article. I have never tried the step in the article, so can not vouch for it, but its simple enough to try though.
Cheers
Jimmy
07-06-2009 03:56 AM
Hi Jimmy
Thank you very much for your reply, I read that article about ICMP firewall blocking, but I'm trying to ping my Vlan's default gateway, such as I can ping successfully VLAN 2's default gateway from PC1, but when I'm trying to ping Vlan 4's Default gateway I can't do it from PC1.
Both vlans are working and PCs form their own Vlans can ping their default gateways but PCs from other Vlans not be able to ping each other vlans. So there is no inter vlan communication.
Thank you
Regards
Ali
07-06-2009 04:27 AM
Ali
Can you post "sh ip route" from the 3660.
Jon
07-06-2009 04:56 AM
Hi Jon
here it is:
Router#show ip route
Codes: C - connected, S - static, I - IGRP, 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, E - EGP
i - IS-IS, 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
172.12.0.0/24 is subnetted, 2 subnets
C 172.12.2.0 is directly connected, FastEthernet0/0.2
C 172.12.4.0 is directly connected, FastEthernet0/0.4
Router#
------------------------------------
Router#debug ip routing
IP routing debugging is on
Router#ping 172.12.2.2
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 172.12.2.2, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/2/4 ms
---------------------------------
Ping from Router to Pc 2 ip address:
Router#ping 172.12.4.4
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 172.12.4.4, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/2/4 ms
Router#
00:28:44: ICMP: echo reply rcvd, src 172.12.4.4, dst 172.12.4.1
00:28:44: ICMP: echo reply rcvd, src 172.12.4.4, dst 172.12.4.1
00:28:44: ICMP: echo reply rcvd, src 172.12.4.4, dst 172.12.4.1
00:28:44: ICMP: echo reply rcvd, src 172.12.4.4, dst 172.12.4.1
00:28:44: ICMP: echo reply rcvd, src 172.12.4.4, dst 172.12.4.1
----------------------------------
Ping from Router to PC1 ip address:
Router#ping 172.12.2.2
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 172.12.2.2, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/1/4 ms
Router#
00:28:56: ICMP: echo reply rcvd, src 172.12.2.2, dst 172.12.2.1
00:28:56: ICMP: echo reply rcvd, src 172.12.2.2, dst 172.12.2.1
00:28:56: ICMP: echo reply rcvd, src 172.12.2.2, dst 172.12.2.1
00:28:56: ICMP: echo reply rcvd, src 172.12.2.2, dst 172.12.2.1
00:28:56: ICMP: echo reply rcvd, src 172.12.2.2, dst 172.12.2.1
07-06-2009 05:21 AM
Ali
Strange as config looks good. Can you post the following
1) PC1 - "ipconfig /all"
2) PC2 - "ipconfig /all"
3) Full router config
4) Full switch config
Jon
07-06-2009 03:43 AM
Hi Giuseppe,
Thank you very much for your reply,
Yes i gave the default Getway on both pcs
Also disable my norton 360 firewall completly, but i still can't ping eath other vlan Default Gatway. but i can successfully ping 2 & 4 Vlan's owns getways.
PC1:- 172.12.2.2
Msk:- 255.255.255.0
DGet:- 172.12.2.1
(i can ping successully Default getway 172.12.2.1 from my PC1)
PC2:- 172.12.4.4
Msk:- 255.255.255.0
DGet:- 172.12.4.1
(i can ping successully Default getway 172.12.4.1 from my PC2)
Here are some replys from Pings & Debugs:
Router#ping 172.12.2.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 172.12.2.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/1/4 ms
Router#ping 172.12.4.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 172.12.4.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/1/1 ms
-------------------------------------
Router#show vlan
Virtual LAN ID: 1 (IEEE 802.1Q Encapsulation)
vLAN Trunk Interface: FastEthernet0/0
This is configured as native Vlan for the following interface(s) :
FastEthernet0/0
Protocols Configured: Address: Received: Transmitted:
Virtual LAN ID:2 (IEEE 802.1Q Encapsion)
vLAN Trunk Interface: FastEthernet0/0.2
Protcls Confid: Addrs: Recved: Trasmitd:
IP 172.12.2.1 21 18
Virtual LAN ID: 4 (IEEE 802.1Q Encapsulation)
vLAN Trunk Interface: FastEthernet0/0.4
Protocols Configured: Address: Received: Transmitted:
IP 172.12.4.1 130 14
-------------------------------------
Router#debug ip icmp
ICMP packet debugging is on
Router#
00:14:12: ICMP: echo reply sent, src 172.12.2.1, dst 172.12.2.2
00:14:13: ICMP: echo reply sent, src 172.12.2.1, dst 172.12.2.2
00:14:43: ICMP: echo reply sent, src 172.12.4.1, dst 172.12.4.4
00:14:44: ICMP: echo reply sent, src 172.12.4.1, dst 172.12.4.4
------------------------------------
Router#debug arp
ARP packet debugging is on
Router#
00:16:05: IP ARP: rcvd req src 172.12.4.4 001e.6831.bb83, dst 172.12.4.1 FastEth
ernet0/0.4
00:16:05: IP ARP: sent rep src 172.12.4.1 000d.281c.64a0,
dst 172.12.4.4 001e.6831.bb83 FastEthernet0/0.4
Router#
00:17:32: IP ARP: rcvd req src 172.12.2.2 0024.e8a8.3b4d, dst 172.12.2.1 FastEth
ernet0/0.2
00:17:32: IP ARP: sent rep src 172.12.2.1 000d.281c.64a0,
dst 172.12.2.2 0024.e8a8.3b4d FastEthernet0/0.2
-----------------------------------
Router(config)#inter
Router(config)#interface fa0/0.2
Router(config-subif)#ip pro
Router(config-subif)#ip pro
Router(config-subif)#ip proxy-arp
Router(config-subif)#interf fa0/0.4
Router(config-subif)#ip proxy-arp
Router(config-subif)#exit
Router(config)#^Z
Router#wr
-----------------------------------
Router#debug ip packet
IP packet debugging is on
Router#
00:28:21: IP: s=172.12.2.2 (FastEthernet0/0.2), d=172.12.2.1 (FastEthernet0/0.2)
, len 60, rcvd 3
00:28:21: IP: s=172.12.2.1 (local), d=172.12.2.2 (FastEthernet0/0.2), len 60, se
nding
00:28:23: IP: s=172.12.2.2 (FastEthernet0/0.2), d=172.12.2.1 (FastEthernet0/0.2)
, len 60, rcvd 3
00:28:23: IP: s=172.12.2.1 (local), d=172.12.2.2 (FastEthernet0/0.2), len 60, se
nding
00:28:24: IP: s=172.12.2.2 (FastEthernet0/0.2), d=172.12.2.1 (FastEthernet0/0.2)
, len 60, rcvd 3
00:28:24: IP: s=172.12.2.1 (local), d=172.12.2.2 (FastEthernet0/0.2), len 60, se
nding
-----------------------------
07-06-2009 01:01 PM
Hello Muhammad,
I agree with Jon and Danilo your switch configuration looks like fine.
There can be some Vista issue.
One point I see in ipconfig /all different from Win XP output is:
autoconfiguration enabled yes
I think this should be related to IPv6.
May you post from PC on the shell
route print
let's see what is the usage it thinks to do of the default gateway.
Hope to help
Giuseppe
07-06-2009 05:40 AM
I look at your config and they look good.
I think in IOS 12.2, the following default is;
!
no ip subnet-zero
no ip classless
Can you check if they are in that settings and set them to the following;
!
ip subnet-zero
ip classless
07-06-2009 06:54 AM
PC 1 / ip config
C:\Users\Ali>ipconfig/all
Windows IP Configuration
Ethernet adapter Local Area Connection:
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Realtek RTL8168D/8111D Family PCI-E
IC
Physical Address. . . . . . . . . : 00-24-E8-A8-3B-4D
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes
IPv4 Address. . . . . . . . . . . : 172.12.2.2(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 172.12.2.1
NetBIOS over Tcpip. . . . . . . . : Enabled
PC 2 ip config /all
C:\Users\Shameer>ping 172.12.4.1
Pinging 172.12.4.1 with 32 bytes of data:
Request timed out.
Reply from 172.12.4.1: bytes=32 time<1ms TTL=255
Reply from 172.12.4.1: bytes=32 time=1ms TTL=255
Reply from 172.12.4.1: bytes=32 time=1ms TTL=255
Ping statistics for 172.12.4.1:
Packets: Sent = 4, Received = 3, Lost = 1 (25% loss),
Approximate round trip times in milli-seconds:
Minimum = 0ms, Maximum = 1ms, Average = 0ms
C:\Users\Shameer>ipconfig /all
Windows IP Configuration
Ethernet adapter Local Area Connection:
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : NVIDIA nForce 10/100/1000 Mbps Ethernet
Physical Address. . . . . . . . . : 00-1E-68-31-BB-83
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes
IPv4 Address. . . . . . . . . . . : 172.12.4.4(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 172.12.4.1
NetBIOS over Tcpip. . . . . . . . : Enabled
IPv6 Address. . . . . . . . . . . : 2002:ac0c:404::ac0c:404(Preferred)
Default Gateway . . . . . . . . . : 2002:c058:6301::c058:6301
NetBIOS over Tcpip. . . . . . . . : Disabled
On Switch:
Switch#show run
Building configuration...
Current configuration : 925 bytes
!
version 12.1
no service pad
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname Switch
!
!
ip subnet-zero
!
ip ssh time-out 120
ip ssh authentication-retries 3
!
spanning-tree mode pvst
no spanning-tree optimize bpdu transmission
spanning-tree extend system-id
!
!
!
!
interface FastEthernet0/1
switchport mode trunk
!
interface FastEthernet0/2
switchport access vlan 2
switchport mode access
!
interface FastEthernet0/3
!
interface FastEthernet0/4
switchport access vlan 4
switchport mode access
!
interface FastEthernet0/5
!
interface FastEthernet0/12
!
interface Vlan1
no ip address
no ip route-cache
shutdown
!
ip http server
!
line con 0
line vty 0 4
login
line vty 5 15
login
!
!
end
Switch#
On Router:
Router#show run
Building configuration...
Current configuration : 1095 bytes
!
version 12.2
no service single-slot-reload-enable
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname Router
!
logging rate-limit console 10 except errors
no logging monitor
!
ip subnet-zero
!
!
no ip finger
no ip domain-lookup
!
no ip dhcp-client network-discovery
call rsvp-sync
!
!
!
fax interface-type modem
mta receive maximum-recipients 0
!
!
controller E1 4/0
!
controller E1 4/1
!
!
interface FastEthernet0/0
no ip address
duplex auto
speed auto
!
interface FastEthernet0/0.2
encapsulation dot1Q 2
ip address 172.12.2.1 255.255.255.0
!
interface FastEthernet0/0.4
encapsulation dot1Q 4
ip address 172.12.4.1 255.255.255.0
!
!
interface FastEthernet4/0
no ip address
shutdown
duplex auto
speed auto
!
ip classless
ip http server
!
!
dial-peer cor custom
!
!
!
!
line con 0
transport input none
line aux 0
line vty 0 4
login
!
end
Router#
07-06-2009 07:06 AM
Hi,
i put no ip classess but it still showing the only no ip subnet-zero!
here is Show Configuration of my Router:
Router#show run
Building configuration...
Current configuration : 1098 bytes
!
version 12.2
no service single-slot-reload-enable
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname Router
!
logging rate-limit console 10 except errors
no logging monitor
!
ip subnet-zero
!
!
no ip finger
no ip domain-lookup
!
no ip dhcp-client network-discovery
call rsvp-sync
!
!
!
!
!
fax interface-type modem
mta receive maximum-recipients 0
!
!
controller E1 4/0
!
controller E1 4/1
!
!
interface FastEthernet0/0
no ip address
duplex auto
speed auto
!
interface FastEthernet0/0.2
encapsulation dot1Q 2
ip address 172.12.2.1 255.255.255.0
!
interface FastEthernet0/0.4
encapsulation dot1Q 4
ip address 172.12.4.1 255.255.255.0
!
interface Serial3/0
no ip address
shutdown
!
interface Serial3/1
no ip address
shutdown
!
interface Serial3/2
no ip address
shutdown
!
interface Serial3/3
no ip address
shutdown
!
interface FastEthernet4/0
no ip address
shutdown
duplex auto
speed auto
!
no ip classless
ip http server
!
!
dial-peer cor custom
!
!
!
!
line con 0
transport input none
line aux 0
line vty 0 4
login
!
end
Router#
------------------------------
Show Run of my Switch:
Switch#show run
Building configuration...
Current configuration : 925 bytes
!
version 12.1
no service pad
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname Switch
!
!
ip subnet-zero
!
ip ssh time-out 120
ip ssh authentication-retries 3
!
spanning-tree mode pvst
no spanning-tree optimize bpdu transmission
spanning-tree extend system-id
!
!
!
!
interface FastEthernet0/1
switchport mode trunk
!
interface FastEthernet0/2
switchport access vlan 2
switchport mode access
!
interface FastEthernet0/3
!
interface FastEthernet0/4
switchport access vlan 4
switchport mode access
!
interface FastEthernet0/5
!
interface FastEthernet0/6
!
interface FastEthernet0/7
!
interface FastEthernet0/8
!
interface FastEthernet0/9
!
interface FastEthernet0/10
!
interface FastEthernet0/11
!
interface FastEthernet0/12
!
interface Vlan1
no ip address
no ip route-cache
shutdown
!
ip http server
!
line con 0
line vty 0 4
login
line vty 5 15
login
!
!
end
Switch#
07-06-2009 07:18 AM
Hi Muhammad,
The following config is correct;
ip subnet-zero
ip classless
Don't change them. I'm just checking them earlier as you didn't post all the config.
Regards,
Dandy
07-06-2009 07:52 AM
Hi Dandy
do you think there could be the prolem in Windows Visa busines Ed? that are not allowing me to ping any other default gateway? except its own?
Thanks
Muhammand
07-06-2009 08:08 AM
Although I hate Vista (I considered beta of Windows 7 code). But I don't think they will cause the problem :)
Check this link and see what you may have missed http://www.cisco.com/en/US/tech/tk389/tk815/technologies_configuration_example09186a00800949fd.shtml
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