[c-nsp] need help on switch configuration

Tue May 17 13:59:51 EDT 2005

    Try to check first physical status:

show int fas 0/23

    Then the trunk status:

sh int fas 0/23 trunk

    Finally check for STP. If STP is working for that vlan you can sure 
you trunk is OK. Yo should see the port in forwarding and the root (that 
may be the same switch, depending in your configuration in your LAN).

Best Regards,
-asn

Raj Panchal wrote:

>Where is ur router connected which port ? 
>Is ur router doing intervlan routing ?
>Which port is ur second switch connected on the first switch ? Is it trunk ?
>Is it trunking both the vlans ? Also both the vlans should be there in the
>vlan database of both switches
>
>Also check whether ur getting appropriate mac address in appropriate vlans
>on the switch connected to ur router and switch connected to ur PCs in
>question.
>
>Raj
>
>
>-----Original Message-----
>From: cisco-nsp-bounces at puck.nether.net
>[mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of snort bsd
>Sent: Saturday, May 14, 2005 9:39 AM
>To: cisco-nsp
>Subject: [c-nsp] need help on switch configuration
>
>Hi All:
>
>I have two switches and they are connected via
>crossover cable. now i have two vlans (100 and 110)
>configured and one works fine. but another just
>doesn't work, meaning that it just doesn't pass
>trafifc. this vlan is 192168.8.0/27; the servers, the
>router interface (gateway) just don't talk to each
>other. here is the configure:
>
>version 12.1
>no service pad
>service timestamps debug uptime
>service timestamps log uptime
>service password-encryption
>!
>hostname sw0-4200-oam
>!
>enable password 7 046802030224425D
>!
>clock timezone GMT -6
>ip subnet-zero
>!
>!
>spanning-tree mode pvst
>no spanning-tree optimize bpdu transmission
>spanning-tree extend system-id
>!
>!
>!
>!
>interface FastEthernet0/1
> switchport access vlan 100
> switchport mode access
> spanning-tree portfast
>!
>interface FastEthernet0/2
> switchport access vlan 100
> switchport mode access
> spanning-tree portfast
>!
>interface FastEthernet0/3
> switchport access vlan 100
> switchport mode access
> spanning-tree portfast
>!
>interface FastEthernet0/4
> switchport access vlan 100
> switchport mode access
> spanning-tree portfast
>!
>interface FastEthernet0/5
> switchport access vlan 100
> switchport mode access
> spanning-tree portfast
>!
>interface FastEthernet0/6
> switchport mode access
> spanning-tree portfast
>!
>interface FastEthernet0/7
> switchport access vlan 110
> switchport mode access
> spanning-tree portfast
>!
>interface FastEthernet0/8
> switchport access vlan 110
> switchport mode access
> spanning-tree portfast
>!
>interface FastEthernet0/9
> switchport access vlan 110
> switchport mode access
> spanning-tree portfast
>!
>interface FastEthernet0/10
> switchport access vlan 110
> switchport mode access
> spanning-tree portfast
>!
>interface FastEthernet0/11
> switchport mode access
> spanning-tree portfast
>!
>interface FastEthernet0/12
> switchport mode access
> spanning-tree portfast
>!
>interface FastEthernet0/13
> switchport mode access
> spanning-tree portfast
>!
>interface FastEthernet0/14
> switchport mode access
> spanning-tree portfast
>!
>interface FastEthernet0/15
> switchport mode access
> spanning-tree portfast
>!
>interface FastEthernet0/16
> switchport mode access
> spanning-tree portfast
>!
>interface FastEthernet0/17
> switchport mode access
> spanning-tree portfast
>!
>interface FastEthernet0/18
> switchport mode access
> spanning-tree portfast
>!
>interface FastEthernet0/19
> switchport mode access
> spanning-tree portfast
>!
>interface FastEthernet0/20
>!
>interface FastEthernet0/21
>!
>interface FastEthernet0/22
>!
>interface FastEthernet0/23
> switchport trunk allowed vlan 100
> switchport mode trunk
> speed 100
> duplex full
>!
>interface FastEthernet0/24
> switchport trunk allowed vlan 110
> switchport mode trunk
> speed 100
> duplex full
>!
>interface GigabitEthernet0/1
> switchport mode trunk
>!
>interface GigabitEthernet0/2
> switchport mode trunk
>!
>interface Vlan1
> no ip address
> no ip route-cache
> shutdown
>!
>interface Vlan115
> ip address 10.10.100.11 255.255.255.224
> no ip route-cache
>!
>ip default-gateway 10.10.100.1
>no ip http server
>no cdp run
>!
>line con 0
>line vty 0 4
> login
>line vty 5 15
> login
>
>what did I miss? trunk port 23 seems to work fine and
>I ahve no problem to access network 10.10.100.0/27,
>not trunk link 110 (port 24). tried different ports
>and the results were the same:
>
>globalnet-jsa#ping 192.168.8.1
>
>Type escape sequence to abort.
>Sending 5, 100-byte ICMP Echos to 192.168.8.1, timeout
>is 2 seconds:
>UUUUU
>Success rate is 0 percent (0/5)
>sw0-4200-oam#ping 10.10.100.1
>
>Type escape sequence to abort.
>Sending 5, 100-byte ICMP Echos to 10.10.100.1, timeout
>is 2 seconds:
>!!!!!
>Success rate is 100 percent (5/5), round-trip
>min/avg/max = 1/5/16 ms
>
>tia
>
>
>
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>  
>

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