Routing

Hi All,

Any comments and feedback about my problem would be gratefully appreciated.

i have a  mx80 with 12.1R1.9 i have created some logical systems for IBGP configuration and OSPF for recursive route lookup with lt interfaces but i can not see those interfaces with show interfaces terse command. 
Although, whole configuration is copied from juniper website 

http://www.juniper.net/techpubs/en_US/junos12.1/topics/topic-map/bgp-ibgp-peering.html

, BGP peers are stucked in idle state and no neighbors seems with sh ospf neighbors logical-system A 

What do you think the problem could be?


Thanks and Regards, 

Try using a physical loopback cable with vlan sub interfaces rather than lt interfaces for this.  lt's between logical systems often results in some strange behaviour..

If its still a problem with a loopback cable then post your config and I will take a look.

Cheers,

Caillin

Also if they're not there with show interface terse then check you have the following command in your config:

set chassis fpc 0 pic 0 tunnel-services bandwitdh 10g

Repeat for multiple fpc/pic combos and 1g/10g bandwitdths as required.

Cheers,

Caillin

Hi Caillin,

Thank you for your reply,

Unfortunately I have a remote connection to the systems. So, physical loopback cable solution is not possible for me.

It is really annoying to see that the same configuration with the juniper website does not work for me. 

btw mx80 is also connected with 3 more mx80. However, I do not know the exact topology.

Do you know if there is a command like cisco cdp to see the neighbors? Maybe if I can understand the topology I can

prefer to realize the configuration with 3 routers rather than logical systems.

Br,

Serkan

as another poster mentioned, to use LT interfaces you have to configure tunnel-services on an fpc/pic for LT interfaces to work.

for example if you configure

set chassis fpc 1 pic 3 tunnel-services bandwidth 10g

will create interface lt-1/3/0 etc.  you can then configure the various units to interconnect the different logical systems.

also you can configure LLDP on the MX interfaces to see what MXs are attached to what ports.

set protocols lldp interface <XYZ>

Will

Hi Serkan,

To discover the physical topology you can use LLDP (link layer discovery protocol).  Enter the command "set protocols lldp interface all" then "(run) show lldp neighbors"

Cheers,

Caillin

Hi Serkan,

 I'm a bit concerned when you say you don't see the lt- interfaces using show interfaces terse command.

 Did you configure a pic with tunnel-services knob?

An example would be like the following:

erdems@PE1> show configuration chassis 
fpc 0 {
    pic 0 {
        tunnel-services {
            bandwidth 10g;
        }
    }
}

  After commit, you will have tunnel services interfaces created accordingly:

erdems@PE1> show interfaces terse | match -0/0 | except xe- 
gr-0/0/0                up    up  
ip-0/0/0                up    up  
lc-0/0/0                up    up  
lc-0/0/0.32769          up    up   vpls    
lt-0/0/0                up    up  
mt-0/0/0                up    up  
pd-0/0/0                up    up  
pe-0/0/0                up    up  
pfe-0/0/0               up    up  
pfe-0/0/0.16383         up    up   inet    
pfh-0/0/0               up    up  
pfh-0/0/0.16383         up    up   inet    
ut-0/0/0                up    up  
vt-0/0/0                up    up  
vt-0/0/0.0              up    up   inet   

 If you don't have an available PIC that you can dedicate to tunnel services, or simply don't want to do so, you will need to use external cable connections, of course.

 Cheers,

Guys,

Thank you all 

it works now 🙂

Kind Regards,

Serkan