[j-nsp] virtual router on mx

Antonio Sanchez-Monge amonge at juniper.net
Wed Sep 11 05:25:00 EDT 2013


Hi Piotr,

What ping options are you using? You also need to specify the
routing-instance option. The interface option only changes the source
address, see chapter two of this PDF:

http://www.juniper.net/us/en/community/junos/training-certification/day-one
/networking-technologies-series/a-packet-walkthrough/

Thanks!

Antonio Sánchez-Monge
Juniper Networks

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On 9/10/13 9:13 PM, "Piotr" <piotr.1234 at interia.pl> wrote:

>Hello,
>
>On my mx240 ( 11.4R5.5) i try to make virtual router with additional bgp
>session to my isp. Main bgp session in main routing table goes via
>ae0.74, extra session in vr blackhole should go via ae0.77. Problem is
>that there is no communication with peer in this virtual router. When i
>ping remote site from interface in vr blackhole i see this packets on
>interface in main router.. I don't know why junos  transmit packets via
>main routing table ?
>
>Appreciate the help
>many thanks
>Peter
>
>
>below config and some output
>
>
>p2p addresses:
>me: 10.10.7.154/30
>remote: 10.10.7.153/30
>
>
># show interfaces ae0.74
>description main_interface;
>vlan-id 74;
>family inet {
>     address 10.10.7.130/30;
>}
>
>
>#show interfaces ae0.77
>description vr-blackholing;
>vlan-id 77;
>family inet {
>         address 10.10.7.154/30;
>}
>
>
>
># show routing-instances blackhole
>instance-type virtual-router;
>interface ae0.77;
>routing-options {
>     static {
>         route 10.10.0.243/32 next-hop 10.10.7.153;
>     }
>     autonomous-system 138;
>}
>protocols {
>     bgp {
>             group blackhole {
>             type external;
>             multihop;
>             local-address 10.10.7.154;
>             import blackhole-in;
>             export blackhole-out;
>             peer-as 123;
>             neighbor 10.10.0.243;
>         }
>     }
>}
>
>
># run show route 10.10.7.153
>inet.0: 466059 destinations, 1693894 routes (466053 active, 6 holddown,
>2 hidden)
>
>
>10.10.0.0/16     *[BGP/170] 1w5d 12:40:05, MED 0, localpref 1141, from
>10.10.0.243
>                       AS path: 123 I
>                     > to 10.10.7.129 via ae0.74
>
>
>blackhole.inet.0: 4 destinations, 4 routes (4 active, 0 holddown, 0
>hidden)
>+ = Active Route, - = Last Active, * = Both
>
>10.10.7.152/30   *[Direct/0] 00:47:23
>                     > via ae0.77
>
>
>
>
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>





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