11-22-2002 08:40 PM - edited 03-02-2019 03:08 AM
Please kindly help me if anyone know how to config a cisco3550 router
such that routing between 2 vlan is possible
The Problem Detail:
Setup
=====
FA0/1 <-> PC A (ip=192.168.70.1, gateway=192.168.70.254)
FA0/2 <-> PC B (ip=192.168.80.1, gateway=192.168.80.254)
Running Config (detail is no shown)
==============
!
ip routing
!
int fa0/1
switchport access vlan 70
switchport mode access
no shutdown
!
int fa0/2
switchport access vlan 80
switchport mode access
no shutdown
!
int vlan 70
ip address 192.168.70.254
no shutdown
!
int vlan 70
ip address 192.168.70.254
no shutdown
!
Diagnostic Information
======================
PC A (ip=192.168.70.1) can ping gateway = 192.168.70.254 but not 80.254 and 80.1
PC B (ip=192.168.80.1) can ping gateway = 192.168.80.254 but not 70.254 and 70.1
The "show ip route" command shows:
C 192.168.70.0/24, VLAN70
C 192.168.80.0/24, VLAN80
I also tried add the vlan 70,80 to the vlan db by :
vlan database
vlan 70 name vlan70
vlan 80 name vlan80
exit
Comment
=======
I have searched the whole cisco site and still just can find the setting mentioned above. If anyone have experience about this issue.Please tell us,thank you
11-23-2002 08:18 PM
Do you have an EMI image running on this switch? If you do, configure an logical VLAN interface for VLAN 80 as well. You have it configured only for VLAN 70
If this does not help, paste the output of "sh ver" and "sh ip interface brief"
11-24-2002 01:51 AM
Sorry, I have entered the right config for vlan 80 but post the wrong part due to
copy.
The version of IOS is 12.1 but without EMI image
Is EMI image essential ?
All interface is up and line protocol is up
11-24-2002 09:38 PM
You need the EMI image, without it you cannot route between vlans
01-03-2003 06:27 AM
This is not true, SMI allows routing but does not include support for advanced routing. It uses static and RIP for routing IP traffic.
01-05-2003 08:34 PM
Sounds like you have a L3 problem. Try extended ping:
1. from 192.168.70.254 to 192.168.80.1
2. from 192.168.70.254 to 192.168.80.254
3. from 192.168.80.254 to 192.168.70.1
4. from 192.168.80.254 to 192.168.70.254
If both 2&4 are fine but 1&3 are not then you might have the default gateway on the PCs set incorrectly. If all 4 cases work then I guess ... send out an outage notification and give the switch a kick. :-)
Discover and save your favorite ideas. Come back to expert answers, step-by-step guides, recent topics, and more.
New here? Get started with these tips. How to use Community New member guide