08-27-2009 10:16 AM - edited 03-06-2019 07:28 AM
I have the following configuration.
router (2821 with nm esw016) - trunk (single cable) - switch (3550)
I configured the router to be vtp master and switch to be client.
I need to be able to telnet into both the switch and the router from a client plugged into the switch.
I have done on router:
vlan database
vlan 2 name Enabled-Interfaces
vlan 3 name Disabled-Interfaces
vtp mode server
vtp domain test
vtp v2-mode
interface gi0/0
desc connection to outside link
ip address 10.0.1.1 255.255.255.252
ip nat outside
interface gi1/15
desc trunk to switch
switchport mode trunk
interface Vlan 2
desc inside clients
int Vlan2
ip address 192.168.3.1 255.255.255.0
ip nat inside
on siwtch
ip default gateway 192.168.3.1
vtp mode client
vtp domain test
int gi0/1
Description Trunk to Router
switchport trunk encapsulation dot1q
switchport mode trunk
no shut
int range gi0/3 - 48
Desciption Disabled Ports
switchport mode access
switchport access vlan 3
shut
int gi0/3
Desc client
switchport access vlan 2
switchport mode access
no shut
I was thinking it would be best to create loopback interface on both the router and switch something like 1.1.1.1/32 for router and 1.1.1.2/32 on switch and create a route on the router to get back to 1.1.1.2/24 got o vlan 2. But no luck.
Any ideas?
Solved! Go to Solution.
08-27-2009 11:49 AM
Chris
No problem, we've all had those moments :-)
Glad you go it working.
Jon
08-27-2009 10:18 AM
Have you missed out the vlan interface from your posted config on the 3550 switch ?
If not you need to create a vlan 2 interface on the 3550 ie.
int vlan 2
ip address 192.168.3.x where x is an unused IP from that subnet.
You have already set the default-gateway on the switch so you should be good to go.
Jon
08-27-2009 11:11 AM
I can now login to the switch from the client; however when I try to connect to the router at 192.168.3.1 (router) I get connection refused.
If I try from the switch to the router no problem.
If I try from the router to switch I get connection refused.
If I try and put a loopback on the router and telnet to it I get connection refused.
Ideas
08-27-2009 11:13 AM
The client is in vlan 2 ?
Can you post the full config of the switch and router.
Jon
08-27-2009 11:33 AM
08-27-2009 11:39 AM
Can you just clarify - your switch is only allowing ssh so are you using ssh to connect to switch from client or telnet ?
Jon
08-27-2009 11:44 AM
Boy do I feel dumb right about now. I guess in my configuration I forgot to configure ssh on the router, so of course ssh would not work when I tried to connect.
Everything is working just fine, just not enough mountain dews or maybe too many.
Thanks
08-27-2009 11:49 AM
Chris
No problem, we've all had those moments :-)
Glad you go it working.
Jon
08-27-2009 10:52 AM
Well you need a l3 interface to reach your default gateway on the switch. You should create a vlan 2 interface on the switch, on the 192.168.3.0 network. If you need to reach your loopbacks you also need to enable routing on your switch so that it routes between the interfaces. Then remove your default-gateway command and add a 0/0 ip route instead.
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