Switching

Hello,

I'm new to Juniper and I could not configure Ethernet-Switching properly on the switch. I inserted the copper (fiber also not working) Modules to the Ports, but could not ping the Hosts connected to them.

I really don't know where the Problem is. I tried to put the Interfaces into default-VLAN and configure them as Access-Ports, and it still did not work out.

Please help me, I'm running out of ideas. Thanks.

Best regards,

box

Hello,

After putting the same transceivers on qfx as well as on corresponding peer device port & keeping whatever configuration you have on the interface, can you share output of following commands?

config mode:-

show vlans

show interface <interface name>

run show interface terse | match <interface name>

Regards,

Rushi

Hello Rushi,

thanks for your reply.

root@switch-ipb2# show vlans
default {
    vlan-id 1;
    l3-interface irb.0;
}

root@switch-ipb2# show interfaces xe-0/0/10    
unit 0 {
    family ethernet-switching {
        interface-mode access;
        vlan {
            members default;
        }
        storm-control default;
    }
}

root@switch-ipb2# show interfaces xe-0/0/12          
unit 0 {
    family ethernet-switching {
        interface-mode access;
        vlan {
            members default;
        }
        storm-control default;
    }
}

The 'run show interface terse | match <interface name>' has no output becuase the interfaces are named ge-0/0/X in op-Mode instead of xe-0/0/X in config-Mode.

Best regards,

box

Hello,

If device recognizes these interfaces as gig interfaces, you will have to configure them as gig interfaces.

xe stands for 10gig interface & only if you have 10gig interfaces, your configuration will be valid.

Regards,

Rushi

Hello Rushi,

I really tried to find how I could do it, but I didn't find. Could you please give me a hint how I could configured the xe-Interface to work as ge?

Thank you. Best regards.

Hi ,

The reverse is possible(you can make a higher bandwidth capable interface to funtion with lower bandwidth ) but not the other way(40 gig can work as channelised 10 gig ports but not the other way round 

You can channelise a  higher bandwidth interface to work in multiple sub-interface (40 gig port into 4 channelised 10 gig port.

However remember the below thumb rule:

. "You cannot channelize the 100-Gigabit Ethernet ports when they are operating as 100-Gigabit Ethernet interfaces"

Below two links will explain the above said info in detail:

http://www.juniper.net/documentation/en_US/junos/topics/task/configuration/ten-gigabit-interfaces-qfx-series-cli.html

https://www.juniper.net/techpubs/en_US/junos/topics/task/configuration/qfx3500-3600-standalone-channel-configuring.html

Please mark my answer as accepted solution, if  your query is answered

. 

Hi Vincy,

yes, that's exactly what I am trying to do. To make the xe (10G) work as a ge (1G) Interface. How could I achive that?

Best regards,

box

please follow the below blog post No 2 :

http://forums.juniper.net/t5/Ethernet-Switching/qfx3500-Switch-Configure-xe-Interface-to-work-as-ge/m-p/305066#M15895

Thank you very much.