Ethernet Switching
Ethernet Switching

Configuring logical layer 2 and local layer 3 interfaces on a single physical port

‎08-29-2019 07:21 AM

Hello,

 

I am trying to configure logical layer 2 and logical layer three interfaces on a same physical port on EX4300. Following is my configuration.

 

Switch 1

set vlans Test1 vlan-id 200
set vlans Test2 vlan-id 220
set vlans Test3 vlan-id 230
 
set interfaces irb unit 220 family inet address 172.31.1.2/24
set vlans Test2 l3-interface irb.220
 
 
set interfaces ge-0/0/2 vlan-tagging
set interfaces ge-0/0/2 unit 200 vlan-id 200
set interfaces ge-0/0/2 unit 200 family inet address 172.31.0.2/24
set interfaces ge-0/0/2 unit 201 family ethernet-switching interface-mode trunk
set interfaces ge-0/0/2 unit 201 family ethernet-switching vlan members Test2
set interfaces ge-0/0/2 unit 201 family ethernet-switching vlan members Test3

SWITCH 2

set vlans Test1 vlan-id 200
set vlans Test2 vlan-id 220
set vlans Test3 vlan-id 230
 
set interfaces irb unit 220 family inet address 172.31.1.1/24
set vlans Test2 l3-interface irb.220
 
 
set interfaces ge-0/0/2 vlan-tagging
set interfaces ge-0/0/2 unit 200 vlan-id 200
set interfaces ge-0/0/2 unit 200 family inet address 172.31.0.1/24
set interfaces ge-0/0/2 unit 201 family ethernet-switching interface-mode trunk
set interfaces ge-0/0/2 unit 201 family ethernet-switching vlan members Test2
set interfaces ge-0/0/2 unit 201 family ethernet-switching vlan members Test3

If I do a show interface terse than I can see the interface is up so as the irb.220. But I try to ping addresses from one switch from another then  can only ping the routed IP addresses not the IP address configured on the irb.220

 

For example from switch 1 to switch 2 I can ping 172.31.0.1 but not 172.31.1.1. 

 

Can someone please guide me on what I have done wrong here.

 

 

 

2 REPLIES 2
Ethernet Switching
Solution
Accepted by topic author jam
‎08-29-2019 09:00 AM

Re: Configuring logical layer 2 and local layer 3 interfaces on a single physical port

‎08-29-2019 08:36 AM

Hi Jam,

 

To configure both L2/L3 (family inet/ethernet-switching) on the same port, we need a feature called "flexible-ethernet-switches".  Please read here: 

https://www.juniper.net/documentation/en_US/junos/topics/topic-map/switches-interface-flexible.html

 

As of now, I don't see this supported on the EX4300:

https://apps.juniper.net/feature-explorer/feature-info.html?fKey=3602&fn=Flexible%20Ethernet%20servi...

 

Similar query answered here as well, so please look out for the alternative options suggested.

https://forums.juniper.net/t5/Ethernet-Switching/Mixing-families-inet-Ethernet-switching-on-AE-inter...

 

Hope this helps.

Regards,
-r.

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Ethernet Switching

Re: Configuring logical layer 2 and local layer 3 interfaces on a single physical port

‎08-29-2019 09:01 AM

Thanks mriyaz