[j-nsp] Loopbacks per VRF or in inet.0

[Bosco Sachanandani]

I want to use 1.1.1.1/32 for one BGP session with customer A and 2.2.2.2/32 for another BGP session with customer B. I have specified the 'local-address' for both customer BGP groups (1.1.1.1/32 for A and 2.2.2.2/32 for B).

I am able to ping the BGP peer IP addresses of both customers by specifying the source as the loopbacks. There are no firewalls dropping TCP sessions for BGP to come up. However, the above config does not work.

Customer B's BGP Session (source 2.2.2.2/32 to peer x.x.x.x) just sits there and does nothing. I am able to ping x.x.x.x.


I came accross this too today. Say:

    protocols {
        bgp {
            group customer {
                type external;
                peer-as 100;
                as-override;
                neighbor 10.49.0.1;
                neighbor 20.49.0.1;
            }
        }

BGP comes up between source 1.1.1.1/32 and destination 10.49.0.1. But does not do anything for 20.49.0.1. (I am able to ping 20.49.0.1) It just sits there. If I deactivate 10.49.0.1 then it comes up instantly.

I am using Junos 5.5R3.1 (with encryption) and trying to peer with a Cisco box at the other end.

Thanks for your time with this.

regards,
Bosco








-----Original Message-----
From: Cliff DeGuzman [mailto:cliff at juniper.net]
Sent: Tuesday, June 15, 2004 8:26 PM
To: Bosco Sachanandani; Paul Goyette; juniper-nsp at puck.nether.net
Subject: RE: [j-nsp] Loopbacks per VRF or in inet.0


Bosco,

Just curious, which part does not work?  What version of JUNOS?

Regards,
Cliff

+++++++++++++++++++++++++++++++++++++++
cliff at vpn12# show interfaces lo0 
unit 0 {
    family inet {
        address 127.0.0.1/32;
    }
}
unit 1 {
    family inet {
        address 1.1.1.1/32;
        address 2.2.2.2/32;
    }
}

[edit]
cliff at vpn12# show routing-instances 
vpna {
    instance-type vrf;
    interface t1-0/1/2.1;
    interface lo0.1;                       <<<<<<<<<<<
    vrf-target target:200:100;
    protocols {
        bgp {
            group customer {
                type external;
                peer-as 100;
                as-override;
                neighbor 10.49.0.1;
            }
        }
    }
}

[edit]
cliff at vpn12# run show route table vpna protocol direct 

vpna.inet.0: 4 destinations, 4 routes (4 active, 0 holddown, 0 hidden)
+ = Active Route, - = Last Active, * = Both

1.1.1.1/32         *[Direct/0] 00:03:18
                    > via lo0.1
2.2.2.2/32         *[Direct/0] 00:01:54
                    > via lo0.1

[edit]
cliff at vpn12# run ping 1.1.1.1 routing-instance vpna 
PING 1.1.1.1 (1.1.1.1): 56 data bytes
64 bytes from 1.1.1.1: icmp_seq=0 ttl=255 time=0.370 ms
64 bytes from 1.1.1.1: icmp_seq=1 ttl=255 time=0.243 ms
^C
--- 1.1.1.1 ping statistics ---
2 packets transmitted, 2 packets received, 0% packet loss
round-trip min/avg/max/stddev = 0.243/0.306/0.370/0.064 ms

[edit]
cliff at vpn12# run ping 2.2.2.2 routing-instance vpna    
PING 2.2.2.2 (2.2.2.2): 56 data bytes
64 bytes from 2.2.2.2: icmp_seq=0 ttl=255 time=0.375 ms
64 bytes from 2.2.2.2: icmp_seq=1 ttl=255 time=0.240 ms
^C
--- 2.2.2.2 ping statistics ---
2 packets transmitted, 2 packets received, 0% packet loss
round-trip min/avg/max/stddev = 0.240/0.307/0.375/0.067 ms

> -----Original Message-----
> From: juniper-nsp-bounces at puck.nether.net 
> [mailto:juniper-nsp-bounces at puck.nether.net] On Behalf Of 
> Bosco Sachanandani
> Sent: Tuesday, June 15, 2004 7:04 AM
> To: Paul Goyette; juniper-nsp at puck.nether.net
> Subject: RE: [j-nsp] Loopbacks per VRF or in inet.0
> 
> 
> 
> Tried that as well but it does not work.... thanks anyways
> 
> regards,
> Bosco
> 
> -----Original Message-----
> From: Paul Goyette [mailto:pgoyette at juniper.net]
> Sent: Tuesday, June 15, 2004 7:08 PM
> To: Bosco Sachanandani; juniper-nsp at puck.nether.net
> Subject: RE: [j-nsp] Loopbacks per VRF or in inet.0
> 
> 
> Why not simply put multiple addresses on a single loopback interface?
> 
> -----Original Message-----
> From: juniper-nsp-bounces at puck.nether.net
> [mailto:juniper-nsp-bounces at puck.nether.net]On Behalf Of 
> Bosco Sachanandani
> Sent: Tuesday, June 15, 2004 6:39 AM
> To: juniper-nsp at puck.nether.net
> Subject: [j-nsp] Loopbacks per VRF or in inet.0
> 
> 
> 
> hi all,
> 
> I just discovered that only one loopback interface can be 
> part of a single VRF or inet.0.
> 
> I was trying to add 2 loopbacks (unit 1 and unit 2) as part 
> of the same VRF but it fails. Anyone suggest why is it so ?
> 
> My requirement is that in one VRF I have 4 BGP peers (2 
> providers at 2 different POPs). I would like to use 1 
> loopback interface for one provider and another loopback 
> interface for the other.
> 
> This requirement is because one provider wants me to use the 
> BGP peering IP address from his IP range and hence would give 
> me the IP.
> 
> Thanks in advance.
> 
> Bosco
> 
> 
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