04-02-2014 09:01 AM - edited 03-07-2019 06:57 PM
Good morning,
Trying to ping hosts on the same vlan (vlan 10) across a pair of 2950s. Oddly, each host cannot even ping its own switch or vice versa. Here are the shows:
Switch_1:
Switch_1#show cdp neighbors
Capability Codes: R - Router, T - Trans Bridge, B - Source Route Bridge
S - Switch, H - Host, I - IGMP, r - Repeater, P - Phone
Device ID Local Intrfce Holdtme Capability Platform Port ID
Switch_2.paquin.com Fas 0/23 151 S I WS-C2950-2 Fas 0/23
Switch_1#show ip int br
Interface IP-Address OK? Method Status Protocol
Vlan1 192.168.10.1 YES NVRAM up up
FastEthernet0/1 unassigned YES unset down down
FastEthernet0/2 unassigned YES unset up up (host 192.168.10.3)
FastEthernet0/3 unassigned YES unset down down
FastEthernet0/4 unassigned YES unset down down
FastEthernet0/5 unassigned YES unset down down
FastEthernet0/6 unassigned YES unset down down
FastEthernet0/7 unassigned YES unset down down
FastEthernet0/8 unassigned YES unset down down
FastEthernet0/9 unassigned YES unset down down
FastEthernet0/10 unassigned YES unset down down
FastEthernet0/11 unassigned YES unset down down
FastEthernet0/12 unassigned YES unset down down
FastEthernet0/13 unassigned YES unset down down
FastEthernet0/14 unassigned YES unset down down
FastEthernet0/15 unassigned YES unset down down
FastEthernet0/16 unassigned YES unset down down
FastEthernet0/17 unassigned YES unset down down
FastEthernet0/18 unassigned YES unset down down
FastEthernet0/19 unassigned YES unset down down
FastEthernet0/20 unassigned YES unset down down
FastEthernet0/21 unassigned YES unset down down
FastEthernet0/22 unassigned YES unset down down
FastEthernet0/23 unassigned YES unset up up (trunk port)
FastEthernet0/24 unassigned YES unset down down
Switch_1#show vlan br
VLAN Name Status Ports
---- -------------------------------- --------- -------------------------------
1 default active Fa0/16, Fa0/17, Fa0/18, Fa0/19, Fa0/20, Fa0/21, Fa0/22, Fa0/24
10 DECK active Fa0/1, Fa0/2, Fa0/3, Fa0/4, Fa0/5
20 OPS active Fa0/6, Fa0/7, Fa0/8, Fa0/9, Fa0/10
30 ENG active Fa0/11, Fa0/12, Fa0/13, Fa0/14, Fa0/15
1002 fddi-default act/unsup
1003 token-ring-default act/unsup
1004 fddinet-default act/unsup
1005 trnet-default act/unsup
Switch_1#show vtp status
VTP Version : 2
Configuration Revision : 3
Maximum VLANs supported locally : 128
Number of existing VLANs : 8
VTP Operating Mode : Server
VTP Domain Name : paquin.com
VTP Pruning Mode : Disabled
VTP V2 Mode : Disabled
VTP Traps Generation : Disabled
MD5 digest : 0x23 0xDE 0xEC 0xAD 0x40 0xBD 0x2E 0xD3
Configuration last modified by 192.168.10.1 at 3-1-93 07:25:05
Local updater ID is 192.168.10.1 on interface Vl1 (lowest numbered VLAN interface found)
Switch_1#show mac-address-table
Mac Address Table
-------------------------------------------
Vlan Mac Address Type Ports
---- ----------- -------- -----
All 0011.bbb0.99c0 STATIC CPU
All 0100.0ccc.cccc STATIC CPU
All 0100.0ccc.cccd STATIC CPU
All 0100.0cdd.dddd STATIC CPU
10 0011.bbde.d2d7 DYNAMIC Fa0/23
10 047d.7ba1.42ab DYNAMIC Fa0/23
10 b827.ebeb.b987 DYNAMIC Fa0/2 (host mac, verified correct)
1 0011.bbde.d2c0 DYNAMIC Fa0/23
1 0011.bbde.d2d7 DYNAMIC Fa0/23
20 0011.bbde.d2d7 DYNAMIC Fa0/23
30 0011.bbde.d2d7 DYNAMIC Fa0/23
Total Mac Addresses for this criterion: 11
Switch_1#ping 192.168.10.3 (trying to ping the host, ip is hard-coded)
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.168.10.3, timeout is 2 seconds:
.....
Success rate is 0 percent (0/5)
Trying to ping the Switch, I get destination host unreachable (0% loss)
Switch_2:
Switch_2#show cdp neighbors
Capability Codes: R - Router, T - Trans Bridge, B - Source Route Bridge
S - Switch, H - Host, I - IGMP, r - Repeater, P - Phone
Device ID Local Intrfce Holdtme Capability Platform Port ID
Switch_1.paquin.com Fas 0/23 172 S I WS-C2950-2 Fas 0/23
Switch_3 Fas 0/24 143 S I WS-C3550-2 Fas 0/23
Switch_2#show ip int br
Interface IP-Address OK? Method Status Protocol
Vlan1 192.168.20.1 YES NVRAM up up
FastEthernet0/1 unassigned YES unset up up (hard-coded on host 192.168.20.2)
FastEthernet0/2 unassigned YES unset down down
FastEthernet0/3 unassigned YES unset down down
FastEthernet0/4 unassigned YES unset down down
FastEthernet0/5 unassigned YES unset down down
FastEthernet0/6 unassigned YES unset down down
FastEthernet0/7 unassigned YES unset down down
FastEthernet0/8 unassigned YES unset down down
FastEthernet0/9 unassigned YES unset down down
FastEthernet0/10 unassigned YES unset down down
FastEthernet0/11 unassigned YES unset down down
FastEthernet0/12 unassigned YES unset down down
FastEthernet0/13 unassigned YES unset down down
FastEthernet0/14 unassigned YES unset down down
FastEthernet0/15 unassigned YES unset down down
FastEthernet0/16 unassigned YES unset down down
FastEthernet0/17 unassigned YES unset down down
FastEthernet0/18 unassigned YES unset down down
FastEthernet0/19 unassigned YES unset down down
FastEthernet0/20 unassigned YES unset down down
FastEthernet0/21 unassigned YES unset down down
FastEthernet0/22 unassigned YES unset down down
FastEthernet0/23 unassigned YES unset up up (trunk port)
FastEthernet0/24 unassigned YES unset up up (trunk port, connected to a 3950 switch)
Switch_2#show vlan br
VLAN Name Status Ports
---- -------------------------------- --------- -------------------------------
1 default active Fa0/16, Fa0/17, Fa0/18, Fa0/19, Fa0/20, Fa0/21, Fa0/22
10 DECK active Fa0/1, Fa0/2, Fa0/3, Fa0/4, Fa0/5
20 OPS active Fa0/6, Fa0/7, Fa0/8, Fa0/9, Fa0/10
30 ENG active Fa0/11, Fa0/12, Fa0/13, Fa0/14, Fa0/15
1002 fddi-default act/unsup
1003 token-ring-default act/unsup
1004 fddinet-default act/unsup
1005 trnet-default act/unsup
Switch_2#show vtp status
VTP Version : 2
Configuration Revision : 3
Maximum VLANs supported locally : 128
Number of existing VLANs : 8
VTP Operating Mode : Client
VTP Domain Name : paquin.com
VTP Pruning Mode : Disabled
VTP V2 Mode : Disabled
VTP Traps Generation : Disabled
MD5 digest : 0x23 0xDE 0xEC 0xAD 0x40 0xBD 0x2E 0xD3
Configuration last modified by 192.168.10.1 at 3-1-93 07:25:05
Switch_2#show mac-address-table
Mac Address Table
-------------------------------------------
Vlan Mac Address Type Ports
---- ----------- -------- -----
All 0011.bbde.d2c0 STATIC CPU
All 0100.0ccc.cccc STATIC CPU
All 0100.0ccc.cccd STATIC CPU
All 0100.0cdd.dddd STATIC CPU
1 0011.bb7d.5997 DYNAMIC Fa0/24
1 0011.bbb0.99d7 DYNAMIC Fa0/23
10 0011.bb7d.5997 DYNAMIC Fa0/24
10 047d.7ba1.42ab DYNAMIC Fa0/1 (host mac, verified correct)
10 b827.ebeb.b987 DYNAMIC Fa0/23
20 0011.bb7d.5997 DYNAMIC Fa0/24
30 0011.bb7d.5997 DYNAMIC Fa0/24
Total Mac Addresses for this criterion: 11
Switch_2#ping 192.168.20.2 (trying to ping the host, ip is hard-coded)
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.168.20.2, timeout is 2 seconds:
.....
Success rate is 0 percent (0/5)
Destination host unreachable when host trying to ping Switch_2
The switches are connected with a crossover cable.
Any other information I should supply?
Thanks,
Marc
Solved! Go to Solution.
04-02-2014 11:05 AM
In switch 1 you have SVI for Vlan1 192.168.10.1 but the access port is assigned to vlan 10 having a host 192.168.10.3. Please create vlan 10 SVI with 192.168.10.1 and it should be able to ping the connected host in vlan 10.
Similarly in Switch2, create vlan 10 SVI inteface with an IP address from the same subnet 192.168.10.0/24. And also configure the connected host from this same IP range. (not from 192.168.20.0/24).
Regards,
Kumar
04-02-2014 11:07 AM
Hi Marc,
Both ip are in different subnet with out having a layer 3 device you cant ping between each other ..Please let me know have you connected your switch with any router or layer 3 switch
04-02-2014 10:16 AM
Hi paquinjrm ,
04-02-2014 10:44 AM
Host 1:
ip: 192.168.10.3 mask: 255.255.255.0 gateway:192.168.10.1
Host 2:
ip: 192.168.20.2 mask: 255.255.255.0 gateway:192.168.20.1
Switch_1:
Switch_1#show running-config
Building configuration...
Current configuration : 1934 bytes
!
version 12.1
no service pad
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname Switch_1
!
enable secret 5 $1$6Q1L$tvd8C55hnxUo482I/LL3u/
!
username marc password 0 cisco
ip subnet-zero
!
no ip domain-lookup
ip domain-name paquin.com
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 access vlan 10
!
interface FastEthernet0/2
switchport access vlan 10
!
interface FastEthernet0/3
switchport access vlan 10
!
interface FastEthernet0/4
switchport access vlan 10
!
interface FastEthernet0/5
switchport access vlan 10
!
interface FastEthernet0/6
switchport access vlan 20
!
interface FastEthernet0/7
switchport access vlan 20
!
interface FastEthernet0/8
switchport access vlan 20
!
interface FastEthernet0/9
switchport access vlan 20
!
interface FastEthernet0/10
switchport access vlan 20
!
interface FastEthernet0/11
switchport access vlan 30
!
interface FastEthernet0/12
switchport access vlan 30
!
interface FastEthernet0/13
switchport access vlan 30
!
interface FastEthernet0/14
switchport access vlan 30
!
interface FastEthernet0/15
switchport access vlan 30
!
interface FastEthernet0/16
!
interface FastEthernet0/17
!
interface FastEthernet0/18
!
interface FastEthernet0/19
!
interface FastEthernet0/20
!
interface FastEthernet0/21
!
interface FastEthernet0/22
!
interface FastEthernet0/23
switchport mode trunk
!
interface FastEthernet0/24
switchport mode trunk
!
interface Vlan1
ip address 192.168.10.1 255.255.255.0
no ip route-cache
!
ip http server
!
line con 0
exec-timeout 0 0
password cisco
logging synchronous
line vty 0 4
exec-timeout 30 0
password cisco
login local
transport input telnet ssh
line vty 5 15
exec-timeout 30 0
password cisco
login local
transport input telnet ssh
!
!
end
Switch_1#show interfaces fastEthernet 0/23
FastEthernet0/23 is up, line protocol is up (connected)
Hardware is Fast Ethernet, address is 0011.bbb0.99d7 (bia 0011.bbb0.99d7)
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
input flow-control is unsupported output flow-control is unsupported
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:00:01, output 00:00:01, output hang never
Last clearing of "show interface" counters never
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 1000 bits/sec, 3 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
32637 packets input, 3019724 bytes, 0 no buffer
Received 31559 broadcasts (30430 multicast)
0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 30425 multicast, 0 pause input
0 input packets with dribble condition detected
2859 packets output, 297693 bytes, 0 underruns
0 output errors, 0 collisions, 2 interface resets
0 babbles, 0 late collision, 0 deferred
0 lost carrier, 0 no carrier, 0 PAUSE output
0 output buffer failures, 0 output buffers swapped out
Switch_2:
Switch_2#show running-config
Building configuration...
Current configuration : 1961 bytes
!
version 12.1
no service pad
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname Switch_2
!
enable secret 5 $1$C1vV$wL/rG/zP.EzrsYwHAXMXD.
!
username marc password 0 cisco
ip subnet-zero
!
ip domain-name paquin.com
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
--More--
!
!
!
!
interface FastEthernet0/1
switchport access vlan 10
!
interface FastEthernet0/2
switchport access vlan 10
!
interface FastEthernet0/3
switchport access vlan 10
!
interface FastEthernet0/4
switchport access vlan 10
!
interface FastEthernet0/5
switchport access vlan 10
!
interface FastEthernet0/6
switchport access vlan 20
!
interface FastEthernet0/7
switchport access vlan 20
!
interface FastEthernet0/8
switchport access vlan 20
!
interface FastEthernet0/9
switchport access vlan 20
!
interface FastEthernet0/10
switchport access vlan 20
!
interface FastEthernet0/11
switchport access vlan 30
!
interface FastEthernet0/12
switchport access vlan 30
!
interface FastEthernet0/13
switchport access vlan 30
!
interface FastEthernet0/14
switchport access vlan 30
!
interface FastEthernet0/15
switchport access vlan 30
!
interface FastEthernet0/16
!
interface FastEthernet0/17
!
interface FastEthernet0/18
!
interface FastEthernet0/19
!
interface FastEthernet0/20
!
interface FastEthernet0/21
!
interface FastEthernet0/22
!
interface FastEthernet0/23
switchport mode trunk
!
interface FastEthernet0/24
switchport mode trunk
!
interface Vlan1
ip address 192.168.20.1 255.255.255.0
no ip route-cache
!
ip default-gateway 192.168.20.1
ip http server
banner motd ^C
********
Switch_2
********^C
!
line con 0
exec-timeout 30 0
logging synchronous
line vty 0 4
exec-timeout 30 0
password cisco
login
transport input telnet ssh
line vty 5 15
exec-timeout 30 0
password cisco
login
transport input telnet ssh
!
!
end
Switch_2#show interfaces fastEthernet 0/23
FastEthernet0/23 is up, line protocol is up (connected)
Hardware is Fast Ethernet, address is 0011.bbde.d2d7 (bia 0011.bbde.d2d7)
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
input flow-control is unsupported output flow-control is unsupported
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:00:19, output 00:00:00, output hang never
Last clearing of "show interface" counters never
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 1000 bits/sec, 3 packets/sec
2917 packets input, 303919 bytes, 0 no buffer
Received 1771 broadcasts (959 multicast)
0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 959 multicast, 0 pause input
0 input packets with dribble condition detected
33672 packets output, 3093977 bytes, 0 underruns
0 output errors, 0 collisions, 2 interface resets
0 babbles, 0 late collision, 0 deferred
0 lost carrier, 0 no carrier, 0 PAUSE output
0 output buffer failures, 0 output buffers swapped out
04-02-2014 11:05 AM
In switch 1 you have SVI for Vlan1 192.168.10.1 but the access port is assigned to vlan 10 having a host 192.168.10.3. Please create vlan 10 SVI with 192.168.10.1 and it should be able to ping the connected host in vlan 10.
Similarly in Switch2, create vlan 10 SVI inteface with an IP address from the same subnet 192.168.10.0/24. And also configure the connected host from this same IP range. (not from 192.168.20.0/24).
Regards,
Kumar
04-02-2014 12:02 PM
That did the trick. The material I learned from didn't specify having to duplicate the IP range on switches when routers are not used.
Thanks for the help
01-25-2018 02:46 AM
Cant see the picture of the resolution
04-02-2014 11:07 AM
Hi Marc,
Both ip are in different subnet with out having a layer 3 device you cant ping between each other ..Please let me know have you connected your switch with any router or layer 3 switch
04-02-2014 11:59 AM
The switches were not connected to a router. I was brushing up on VTP at the L2 device before moving on to VTP through routers.
Thanks for the assist.
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