[Question} - How to add multiple loopback IP in one logical router

Hi all,

Can someone guide me how to add multiple loopback IP in one logical router in Olive. FYI i already try but failed. Refering to this URL Bring MPLS Network at Your Home Lab :: Juniper ...this person can add multiple loopback IP in one logical router. I'm use OLIVE - QEMU 10R. Thanks..

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ccie15672

You can apply as many IPs as you want to the same logical loopback interface..

Aldur

There's a few rules you'll want to keep in mind here. First, as previously noted, you can add as many IP addresses to the loopback interface as you want but only if this is under the same logical unit. Second you can only have 1 logical unit per loopback interface per routing instance. The later is what you saw in the link that you provided.

Below is a section of the config from the link that was provided. Notice that there are 2 unit's defined under the loopback interface and that unit 16 is placed inside the vpn1 routing instance. This leaves only unit 25 under the main routing instance inside the logical router.

            lo0 {
                unit 16 {
                    family inet {
                        address 192.168.1.100/32;
                    }
                }
                unit 25 {
                    family inet {
                        address 202.162.208.1/32;
                    }
                }
            }
        }
.....
        routing-instances {
            vpn1 {
                instance-type vrf;
                interface fxp0.10;
                interface lo0.16;  <-----------------------------
                route-distinguisher 2500:100;
                vrf-import vpn1-import;
                vrf-export vpn1-export;
                vrf-target target:2500:100;
                vrf-table-label;
                protocols {
                    bgp {
                        group to_ce3 {
                            type external;
                            peer-as 65000;
                            as-override;
                            neighbor 192.168.1.1;
                        }
                    }
                }
            }
        }

HTH

kronicklez

Aldur wrote: »
There's a few rules you'll want to keep in mind here. First, as previously noted, you can add as many IP addresses to the loopback interface as you want but only if this is under the same logical unit. Second you can only have 1 logical unit per loopback interface per routing instance. The later is what you saw in the link that you provided.

Below is a section of the config from the link that was provided. Notice that there are 2 unit's defined under the loopback interface and that unit 16 is placed inside the vpn1 routing instance. This leaves only unit 25 under the main routing instance inside the logical router.
            lo0 {
                unit 16 {
                    family inet {
                        address 192.168.1.100/32;
                    }
                }
                unit 25 {
                    family inet {
                        address 202.162.208.1/32;
                    }
                }
            }
        }
.....
        routing-instances {
            vpn1 {
                instance-type vrf;
                interface fxp0.10;
                interface lo0.16;  <-----------------------------
                route-distinguisher 2500:100;
                vrf-import vpn1-import;
                vrf-export vpn1-export;
                vrf-target target:2500:100;
                vrf-table-label;
                protocols {
                    bgp {
                        group to_ce3 {
                            type external;
                            peer-as 65000;
                            as-override;
                            neighbor 192.168.1.1;
                        }
                    }
                }
            }
        }
HTH

Hi Aldur,

Thanks for give a feedback. At last have someone give some feedback and explanation to me. Just one question Aldur. Do you test that config in olive or real equipment? Thanks again. Below is the error that i get after i commit.

[edit logical-systems London-PE]
root@Main-Router# commit
[edit logical-systems London-PE interfaces lo0]
'unit 400'
if_instance: Multiple loopback interfaces not permitted in master routing instance
error: configuration check-out failed

[edit logical-systems London-PE]
root@Main-Router#

kronicklez

Hi all,

Just to inform that my problem solved. Thanks for response.

kronicklez

Hi Aldur,

Need your expertise reagrding my config below. I cant ping between CE1 to CE2 even my config same with the URL that i mention before. Thanks.

root@Main-Router# run show route logical-system PE1

inet.0: 9 destinations, 9 routes (9 active, 0 holddown, 0 hidden)
+ = Active Route, - = Last Active, * = Both

10.1.1.0/30 *[Direct/0] 03:30:26
> via fxp1.10
10.1.1.1/32 *[Local/0] 03:30:26
Local via fxp1.10
10.1.2.0/30 *[OSPF/10] 03:05:21, metric 2
> to 10.1.1.2 via fxp1.10
10.1.3.0/30 *[OSPF/10] 03:01:27, metric 3
> to 10.1.1.2 via fxp1.10
202.162.208.1/32 *[Direct/0] 03:09:19
> via lo0.15
202.162.208.7/32 *[OSPF/10] 02:17:25, metric 3
> to 10.1.1.2 via fxp1.10
202.162.208.252/32 *[OSPF/10] 03:01:27, metric 2
> to 10.1.1.2 via fxp1.10
202.162.208.254/32 *[OSPF/10] 03:05:21, metric 1
> to 10.1.1.2 via fxp1.10
224.0.0.5/32 *[OSPF/10] 03:09:19, metric 1
MultiRecv
---(more)---

inet.3: 1 destinations, 1 routes (1 active, 0 holddown, 0 hidden)
+ = Active Route, - = Last Active, * = Both

202.162.208.7/32 *[RSVP/7/1] 02:17:12, metric 3
> to 10.1.1.2 via fxp1.10, label-switched-path toPE2

vpn.inet.0: 7 destinations, 8 routes (7 active, 0 holddown, 0 hidden)
+ = Active Route, - = Last Active, * = Both

172.17.63.1/32 *[BGP/170] 02:10:04, localpref 100
AS path: 777 I
> to 192.168.1.2 via fxp1.100
172.17.68.1/32 *[BGP/170] 02:04:21, localpref 100, from 202.162.208.7
AS path: 911 I
> to 10.1.1.2 via fxp1.10, label-switched-path toPE2
192.168.1.0/30 *[Direct/0] 03:09:19
> via fxp1.100
[BGP/170] 02:10:04, localpref 100
AS path: 777 I
> to 192.168.1.2 via fxp1.100
192.168.1.1/32 *[Local/0] 03:09:19
Local via fxp1.100
---(more 26%)---

192.168.1.100/32 *[Direct/0] 03:09:19
> via lo0.105
192.168.2.0/30 *[BGP/170] 02:17:01, localpref 100, from 202.162.208.7
AS path: I
> to 10.1.1.2 via fxp1.10, label-switched-path toPE2
192.168.2.100/32 *[BGP/170] 02:17:01, localpref 100, from 202.162.208.7
AS path: I
> to 10.1.1.2 via fxp1.10, label-switched-path toPE2

vpnv6.inet.0: 7 destinations, 7 routes (7 active, 0 holddown, 0 hidden)
+ = Active Route, - = Last Active, * = Both

172.17.63.0/24 *[Static/5] 00:32:35
> to 192.168.1.2 via fxp1.110
172.17.68.77/32 *[BGP/170] 01:03:09, localpref 100, from 202.162.208.7
AS path: 1500 I
> to 10.1.1.2 via fxp1.10, label-switched-path toPE2
192.168.1.0/30 *[Direct/0] 01:02:00
> via fxp1.110
192.168.1.1/32 *[Local/0] 01:02:00
Local via fxp1.110
192.168.1.77/32 *[Direct/0] 01:03:09
> via lo0.115
---(more 40%)---

192.168.2.0/30 *[BGP/170] 01:03:09, localpref 100, from 202.162.208.7
AS path: I
> to 10.1.1.2 via fxp1.10, label-switched-path toPE2
192.168.2.77/32 *[BGP/170] 01:03:09, localpref 100, from 202.162.208.7
AS path: I
> to 10.1.1.2 via fxp1.10, label-switched-path toPE2

mpls.0: 5 destinations, 5 routes (5 active, 0 holddown, 0 hidden)
+ = Active Route, - = Last Active, * = Both

0 *[MPLS/0] 03:09:19, metric 1
Receive
1 *[MPLS/0] 03:09:19, metric 1
Receive
2 *[MPLS/0] 03:09:19, metric 1
Receive
16 *[VPN/0] 03:09:19
to table vpn.inet.0, Pop
18 *[VPN/0] 01:03:09
to table vpnv6.inet.0, Pop

bgp.l3vpn.0: 6 destinations, 6 routes (6 active, 0 holddown, 0 hidden)
+ = Active Route, - = Last Active, * = Both
---(more 53%)---

2500:100:172.17.68.1/32
*[BGP/170] 02:04:21, localpref 100, from 202.162.208.7
AS path: 911 I
> to 10.1.1.2 via fxp1.10, label-switched-path toPE2
2500:100:192.168.2.0/30
*[BGP/170] 02:17:01, localpref 100, from 202.162.208.7
AS path: I
> to 10.1.1.2 via fxp1.10, label-switched-path toPE2
2500:100:192.168.2.100/32
*[BGP/170] 02:17:01, localpref 100, from 202.162.208.7
AS path: I
> to 10.1.1.2 via fxp1.10, label-switched-path toPE2
2500:666:172.17.68.77/32
*[BGP/170] 01:16:06, localpref 100, from 202.162.208.7
AS path: 1500 I
> to 10.1.1.2 via fxp1.10, label-switched-path toPE2
2500:666:192.168.2.0/30
*[BGP/170] 01:16:06, localpref 100, from 202.162.208.7
AS path: I
> to 10.1.1.2 via fxp1.10, label-switched-path toPE2
2500:666:192.168.2.77/32
*[BGP/170] 01:16:06, localpref 100, from 202.162.208.7
---(more 68%)---

AS path: I
> to 10.1.1.2 via fxp1.10, label-switched-path toPE2

inet6.3: 1 destinations, 1 routes (1 active, 0 holddown, 0 hidden)
+ = Active Route, - = Last Active, * = Both

::ffff:202.162.208.7/128
*[RSVP/7/1] 02:17:12, metric 3
> to 10.1.1.2 via fxp1.10, label-switched-path toPE2

vpn.inet6.0: 10 destinations, 10 routes (10 active, 0 holddown, 0 hidden)
+ = Active Route, - = Last Active, * = Both

2001:5c0:1::/126 *[Static/5] 03:09:19
> to 2001:d30:1::3 via fxp1.100
2001:5c0:7::/126 *[BGP/170] 02:17:01, localpref 100, from 202.162.208.7
AS path: I
> to 10.1.1.2 via fxp1.10, label-switched-path toPE2
2001:d30:1::/126 *[Direct/0] 03:09:19
> via fxp1.100
2001:d30:1::1/128 *[Local/0] 03:09:19
Local via fxp1.100
2001:d30:1::100/128*[Direct/0] 03:09:19
---(more 81%)---

> via lo0.105
2001:d30:7::/126 *[BGP/170] 02:17:01, localpref 100, from 202.162.208.7
AS path: I
> to 10.1.1.2 via fxp1.10, label-switched-path toPE2
2001:d30:7::700/128*[BGP/170] 02:17:01, localpref 100, from 202.162.208.7
AS path: I
> to 10.1.1.2 via fxp1.10, label-switched-path toPE2
fe80::/64 *[Direct/0] 03:09:19
> via fxp1.100
fe80::5254:0:6412:3457/128
*[Local/0] 03:09:19
Local via fxp1.100
fe80::5254:ff:fe12:3456/128
*[Direct/0] 03:09:19
> via lo0.105

bgp.l3vpn-inet6.0: 3 destinations, 3 routes (3 active, 0 holddown, 0 hidden)
+ = Active Route, - = Last Active, * = Both

2500:100:2001:5c0:7::/126
*[BGP/170] 02:17:01, localpref 100, from 202.162.208.7
AS path: I
> to 10.1.1.2 via fxp1.10, label-switched-path toPE2
---(more 95%)---

2500:100:2001:d30:7::/126
*[BGP/170] 02:17:01, localpref 100, from 202.162.208.7
AS path: I
> to 10.1.1.2 via fxp1.10, label-switched-path toPE2
2500:100:2001:d30:7::700/128
*[BGP/170] 02:17:01, localpref 100, from 202.162.208.7
AS path: I
> to 10.1.1.2 via fxp1.10, label-switched-path toPE2

[edit]
root@Main-Router# exit