Routing

Hi, 

I recently achieved JNCIA-JUNOS, studying for JNCIS-ENT.

I am using vLABs to play with things and quickly ran into something I do not understand.  Attached is a photo of the topology I am messing with.  The blueprint is BGP-multi AS - but I am immediately removing BGP and OSPF protocols.   I set up static routes so I can ping the loopback of vMX2 from vMX3.  I set up IPs on ge-0/0/5

so that I can play with equal cost multipath routing.  I can initially ping the loopback on vMX2, but once I export the policy for load balancing ping stops working.  Would someone please help me see what I am missing ?

Here is my ping before exporting the policy.

jcluser@vMX3> ping 192.168.2.1 rapid count 5 
PING 192.168.2.1 (192.168.2.1): 56 data bytes
!!!!!
--- 192.168.2.1 ping statistics ---
5 packets transmitted, 5 packets received, 0% packet loss
round-trip min/avg/max/stddev = 1.002/1.274/1.461/0.151 ms

Here is the policy:

jcluser@vMX3> show policy balance-load 
Policy balance-load:
    Term unnamed:
        then load-balance per-packet

jcluser@vMX3# set export balance-load 

[edit routing-options forwarding-table]
jcluser@vMX3# commit and-quit 
commit complete
Exiting configuration mode

ping failure after applying

jcluser@vMX3> ping 192.168.2.1 rapid count 5 
PING 192.168.2.1 (192.168.2.1): 56 data bytes
.....
--- 192.168.2.1 ping statistics ---
5 packets transmitted, 0 packets received, 100% packet loss

here are the changes I  load merge on the hosts to set up my environment (after deleting bpg/ospf)

vMX2 ---

interfaces {

    ge-0/0/5 {
        unit 0 {
            family inet {
                address 10.100.33.1/24;
            }
        }
    }

    lo0 {
        unit 0 {
            family inet {
                address 10.100.100.2/32;
                address 192.168.2.1/32;
            }
        }
    }
}
routing-options {
    static {
        defaults {
            preference 20
        }
        route 192.168.1.1/32 next-hop [ 10.100.23.2 10.100.33.2 ];
        route 0.0.0.0/0 preference 5
    }
}

vMX3---
interfaces {
    ge-0/0/5 {
        unit 0 {
            family inet {
                address 10.100.33.2/24;
            }
        }
    }
    lo0 {
        unit 0 {
            family inet {
                address 192.168.1.1/32
            }
        }
    }
}
routing-options {
    static {
        defaults {
        preference 20
        }
        route 0.0.0.0/0 preference 5
        route 192.168.2.1/32 next-hop 10.100.23.1
        route 192.168.2.1/32 next-hop 10.100.33.1
    }
}

Thanks for any help.  If I can  provide any more info, please let me know.

Steve

Looks like you are missing accept action in policy balance-load , try this command. 

set policy-options policy-statement balance-load then accept

Regards, 
Nitish

Hi, 

I recently achieved JNCIA-JUNOS, studying for JNCIS-ENT.

I am using vLABs to play with things and quickly ran into something I do not understand.  Attached is a photo of the topology I am messing with.  The blueprint is BGP-multi AS - but I am immediately removing BGP and OSPF protocols.   I set up static routes so I can ping the loopback of vMX2 from vMX3.  I set up IPs on ge-0/0/5

so that I can play with equal cost multipath routing.  I can initially ping the loopback on vMX2, but once I export the policy for load balancing ping stops working.  Would someone please help me see what I am missing ?

Here is my ping before exporting the policy.

jcluser@vMX3> ping 192.168.2.1 rapid count 5 
PING 192.168.2.1 (192.168.2.1): 56 data bytes
!!!!!
--- 192.168.2.1 ping statistics ---
5 packets transmitted, 5 packets received, 0% packet loss
round-trip min/avg/max/stddev = 1.002/1.274/1.461/0.151 ms

Here is the policy:

jcluser@vMX3> show policy balance-load 
Policy balance-load:
    Term unnamed:
        then load-balance per-packet

jcluser@vMX3# set export balance-load 

[edit routing-options forwarding-table]
jcluser@vMX3# commit and-quit 
commit complete
Exiting configuration mode

ping failure after applying

jcluser@vMX3> ping 192.168.2.1 rapid count 5 
PING 192.168.2.1 (192.168.2.1): 56 data bytes
.....
--- 192.168.2.1 ping statistics ---
5 packets transmitted, 0 packets received, 100% packet loss

here are the changes I  load merge on the hosts to set up my environment (after deleting bpg/ospf)

vMX2 ---

interfaces {

    ge-0/0/5 {
        unit 0 {
            family inet {
                address 10.100.33.1/24;
            }
        }
    }

    lo0 {
        unit 0 {
            family inet {
                address 10.100.100.2/32;
                address 192.168.2.1/32;
            }
        }
    }
}
routing-options {
    static {
        defaults {
            preference 20
        }
        route 192.168.1.1/32 next-hop [ 10.100.23.2 10.100.33.2 ];
        route 0.0.0.0/0 preference 5
    }
}

vMX3---
interfaces {
    ge-0/0/5 {
        unit 0 {
            family inet {
                address 10.100.33.2/24;
            }
        }
    }
    lo0 {
        unit 0 {
            family inet {
                address 192.168.1.1/32
            }
        }
    }
}
routing-options {
    static {
        defaults {
        preference 20
        }
        route 0.0.0.0/0 preference 5
        route 192.168.2.1/32 next-hop 10.100.23.1
        route 192.168.2.1/32 next-hop 10.100.33.1
    }
}

Thanks for any help.  If I can  provide any more info, please let me know.

Steve

 policy balance-load doesn't need accept to work.

I would bet on one link that works (and that is used when loadbalancing isn't used) and the other link that doesn't (and which becomes used only when loadbalancing is activated).

Looks like you are missing accept action in policy balance-load , try this command. 

set policy-options policy-statement balance-load then accept

Regards, 
Nitish

Hi, 

I recently achieved JNCIA-JUNOS, studying for JNCIS-ENT.

I am using vLABs to play with things and quickly ran into something I do not understand.  Attached is a photo of the topology I am messing with.  The blueprint is BGP-multi AS - but I am immediately removing BGP and OSPF protocols.   I set up static routes so I can ping the loopback of vMX2 from vMX3.  I set up IPs on ge-0/0/5

so that I can play with equal cost multipath routing.  I can initially ping the loopback on vMX2, but once I export the policy for load balancing ping stops working.  Would someone please help me see what I am missing ?

Here is my ping before exporting the policy.

jcluser@vMX3> ping 192.168.2.1 rapid count 5 
PING 192.168.2.1 (192.168.2.1): 56 data bytes
!!!!!
--- 192.168.2.1 ping statistics ---
5 packets transmitted, 5 packets received, 0% packet loss
round-trip min/avg/max/stddev = 1.002/1.274/1.461/0.151 ms

Here is the policy:

jcluser@vMX3> show policy balance-load 
Policy balance-load:
    Term unnamed:
        then load-balance per-packet

jcluser@vMX3# set export balance-load 

[edit routing-options forwarding-table]
jcluser@vMX3# commit and-quit 
commit complete
Exiting configuration mode

ping failure after applying

jcluser@vMX3> ping 192.168.2.1 rapid count 5 
PING 192.168.2.1 (192.168.2.1): 56 data bytes
.....
--- 192.168.2.1 ping statistics ---
5 packets transmitted, 0 packets received, 100% packet loss

here are the changes I  load merge on the hosts to set up my environment (after deleting bpg/ospf)

vMX2 ---

interfaces {

    ge-0/0/5 {
        unit 0 {
            family inet {
                address 10.100.33.1/24;
            }
        }
    }

    lo0 {
        unit 0 {
            family inet {
                address 10.100.100.2/32;
                address 192.168.2.1/32;
            }
        }
    }
}
routing-options {
    static {
        defaults {
            preference 20
        }
        route 192.168.1.1/32 next-hop [ 10.100.23.2 10.100.33.2 ];
        route 0.0.0.0/0 preference 5
    }
}

vMX3---
interfaces {
    ge-0/0/5 {
        unit 0 {
            family inet {
                address 10.100.33.2/24;
            }
        }
    }
    lo0 {
        unit 0 {
            family inet {
                address 192.168.1.1/32
            }
        }
    }
}
routing-options {
    static {
        defaults {
        preference 20
        }
        route 0.0.0.0/0 preference 5
        route 192.168.2.1/32 next-hop 10.100.23.1
        route 192.168.2.1/32 next-hop 10.100.33.1
    }
}

Thanks for any help.  If I can  provide any more info, please let me know.

Steve

Looks like you are missing accept action in policy balance-load , try this command. 

set policy-options policy-statement balance-load then accept

Regards, 
Nitish

Hi, 

I recently achieved JNCIA-JUNOS, studying for JNCIS-ENT.

I am using vLABs to play with things and quickly ran into something I do not understand.  Attached is a photo of the topology I am messing with.  The blueprint is BGP-multi AS - but I am immediately removing BGP and OSPF protocols.   I set up static routes so I can ping the loopback of vMX2 from vMX3.  I set up IPs on ge-0/0/5

so that I can play with equal cost multipath routing.  I can initially ping the loopback on vMX2, but once I export the policy for load balancing ping stops working.  Would someone please help me see what I am missing ?

Here is my ping before exporting the policy.

jcluser@vMX3> ping 192.168.2.1 rapid count 5 
PING 192.168.2.1 (192.168.2.1): 56 data bytes
!!!!!
--- 192.168.2.1 ping statistics ---
5 packets transmitted, 5 packets received, 0% packet loss
round-trip min/avg/max/stddev = 1.002/1.274/1.461/0.151 ms

Here is the policy:

jcluser@vMX3> show policy balance-load 
Policy balance-load:
    Term unnamed:
        then load-balance per-packet

jcluser@vMX3# set export balance-load 

[edit routing-options forwarding-table]
jcluser@vMX3# commit and-quit 
commit complete
Exiting configuration mode

ping failure after applying

jcluser@vMX3> ping 192.168.2.1 rapid count 5 
PING 192.168.2.1 (192.168.2.1): 56 data bytes
.....
--- 192.168.2.1 ping statistics ---
5 packets transmitted, 0 packets received, 100% packet loss

here are the changes I  load merge on the hosts to set up my environment (after deleting bpg/ospf)

vMX2 ---

interfaces {

    ge-0/0/5 {
        unit 0 {
            family inet {
                address 10.100.33.1/24;
            }
        }
    }

    lo0 {
        unit 0 {
            family inet {
                address 10.100.100.2/32;
                address 192.168.2.1/32;
            }
        }
    }
}
routing-options {
    static {
        defaults {
            preference 20
        }
        route 192.168.1.1/32 next-hop [ 10.100.23.2 10.100.33.2 ];
        route 0.0.0.0/0 preference 5
    }
}

vMX3---
interfaces {
    ge-0/0/5 {
        unit 0 {
            family inet {
                address 10.100.33.2/24;
            }
        }
    }
    lo0 {
        unit 0 {
            family inet {
                address 192.168.1.1/32
            }
        }
    }
}
routing-options {
    static {
        defaults {
        preference 20
        }
        route 0.0.0.0/0 preference 5
        route 192.168.2.1/32 next-hop 10.100.23.1
        route 192.168.2.1/32 next-hop 10.100.33.1
    }
}

Thanks for any help.  If I can  provide any more info, please let me know.

Steve