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KP3
New User
Posts: 1
Registered: ‎09-12-2017
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Cisco guy that inherited some junipers - need vlaing help !

Long story shirt, I took on a new position and the network guy decided to move on.

So i have inherited 39 juniper EX2400 and 4200 ? switches.

I have no experiance with juniper switch as I have always worked at cisco shops.  I am going to assume that the vlaning is the same on a juniper as it would be on a cisco switch.

 

Setup we have a core set of switches , out to each switch stack we have fiber run and misconfigured port channels  ( 2x10 gb fiber runs with 3 vlans assigned to each 10 gb port)  the issue i have is that  for every vlan on every switch there is an IP assigned to every vlan.  example below   VLAN 100  so that vlan 100 (not default vlan) has 10 gateways assigned to it ?

 

Switch           Vlan 100
172.16.0.1    172.16.100.1
172.16.0.2    172.16.100.2
172.16.0.3    172.16.100.3
172.16.0.4    172.16.100.4
172.16.0.5    172.16.100.5
172.16.0.6    172.16.100.6
172.16.0.7    172.16.100.7
172.16.0.8    172.16.100.8
172.16.0.9    172.16.100.9
172.16.0.10    172.16.100.10

 

 

I am used to the setup of  having all the vlan gateways live on the Core switch stack , all switches attached down the line by fiber would jusy have the vlans created on them ( no gateway) and have all of the vlans on the port channels  of all the switches and have all of the vlans already extended to every part of the building. Am i worong on this  ?

Trusted Contributor
Posts: 75
Registered: ‎01-20-2017
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Re: Cisco guy that inherited some junipers - need vlaing help !


KP3 wrote:

 

I am used to the setup of  having all the vlan gateways live on the Core switch stack , all switches attached down the line by fiber would jusy have the vlans created on them ( no gateway) and have all of the vlans on the port channels  of all the switches and have all of the vlans already extended to every part of the building. Am i worong on this  ?


Yes, you are correct. not sure why the switches are configured this way. only management vlan ip is enough on access layer switches.

Juniper Employee
Posts: 4
Registered: ‎03-04-2016
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Re: Cisco guy that inherited some junipers - need vlaing help !

Hi KP3,

 

You dont have to configure L3 interface on all access switches.

You can delete that and configure gate way only on vlans in core switches.

 

 

- Ajo Thomas