[j-nsp] Suggestions on management of dual-RE devices

[Chris Kawchuk]

Relevant config snippet/stanzas:

## Last commit: 2015-11-24 16:03:02 EST by me
version 13.3R6.5;
groups {
    re0 {
        interfaces {
            fxp0 {
                unit 0 {
                    family inet {
                        address 172.xx.xx.1/24 {
                            master-only;
                        }
                        address 172.xx.xx.2/24;
                    }
                }
            }
        }
    }
    re1 {
        interfaces {
            fxp0 {
                unit 0 {
                    family inet {
                        address 172.xx.xx.1/24 {
                            master-only;
                        }               
                        address 172.xx.xx.3/24;
                    }                   
                }                       
            }                           
        }                               
    }                                   
}                                       
apply-groups [ re0 re1 ];
...
...
...

note the 'master-only" directive. You then SNMP/SSH/etc... to the proverbial '.1' address, which always goes to the master RE; whichever one is active.

Hope that helps.!

- Ck.




On 25/11/2015, at 5:07 AM, Mike Williams <mike.williams at comodo.com> wrote:

> Hi all,
> 
> So we just got our first Juniper devices with dual-REs (if you exclude virtual 
> chassis').
> Before I get into actually configuring them, I'm wondering how others handle 
> management, as I'm a touch confused.
> 
> Normally we just SSH/snmp to the loopback address, optionally jumping off from 
> a device on the same OoB network if routing is down (yes, we should configure 
> a backup router).
> 
> Juniper document providing each RE with it's own loopback address.
> If you do that, you'd have to detect if what you're connected to is master or 
> backup, right?