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Accessing other switches from core switch

bkyuksel
Level 1
Level 1

Hi guys, I have a basic and a silly question. I have an old catalyst switch and I want to connect these 2 switches together. One of them will be used as core and the second will be used as acces sw. Normally I do it on new switches easily. Now on this old catalyst, for instance I create 3 vlans and 1 management vlan to manage switches. Everything is fine, clients get IP from DHCP on both switches. But I cannot access to second switch via management ip. I set ip routing , ip default gateway, trunk is fine etc. done everything but couldnt access it. What is the best practice for accessing other switches from an IP address through Web server or SSH?

Physical example is at the attachment.

Thank you so much in advance, sorry for this silly question.

10 Replies 10

M02@rt37
VIP
VIP

Hello @bkyuksel,

Does the core and access switch ping each other with their vlan 100 IP ?

Access switch has got IP default Gw to the Core IP vlan 100 ?

The trunk between Core and Access has got vlan 100 ?

 

Best regards
.ı|ı.ı|ı. If This Helps, Please Rate .ı|ı.ı|ı.

In new switches, I define native vlan 100 to the trunk port and from the access switch to same port I define vlan 1 (set management ip from vlan 100) and no spanning tree vlan 100,1 and also ip default gw and ip routing. thats it. but in these switches, I shouldnt use vlan 1. so I created vlan 100 on both switches and defined different SVIs. core sw vlan 100 is 192.168.100.1/24 and access sw vlan 100 is 192.168.100.20/24 and from access sw I can ping 192.168.100.1 but cannot reach 192.168.100.20 from anywhere

Sure you can 
telent to SW1 and from there telnet to SW2 
it simple try it sure you will success 

I tried almost everything but couldnt. that was so weird, tomorrow I will try it again. If you have any ideas, it is always good hear it

I will check something about source IP of telnet from SW1 to SW2

Share update today night 

Martin L
VIP
VIP

you can attach your pt file here but it must be in a zip format

check if SVI are up up; check vlans are presents; check trunk ports, turn ip routing on,

Regards, ML
**Please Rate All Helpful Responses **

Hello @bkyuksel 

If this is physical device, you should try add default route instead the command  default-gateway.

conf t

ip route  0.0.0.0  0.0.0.0 <management ip address core switch>

 

as I mention 
it easy 
I access SW1 via VLAN20 SVI 
then I access SW2 via VLAN1 using VLAN1SVI of SW1 as source interface 
that it 
no complicate routing need here 
Screenshot (906).png

bkyuksel
Level 1
Level 1

It works now. thank you guys. I did nothing but the same like yesterday, probably missed some point.

You are so welcome 

Have a nice weekend 

MHM

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