SRX

Hi all first post here so be gentle 🙂

I'm new to JunOS and learning networking as I go along.

Hi all, please see diagram below:

I'm trying to get BGP and OSPF working between a Juniper SRX (packet mode) and the rest of our network. This is just a small part of what we have planned but I've broke it down into a small chunk.

Here's the Juniper's OSPF config:

# show routing-options router-id 
router-id 3.3.3.32;
# show protocols ospf
area 0.0.0.0 {
area 0.0.0.0 {
interface lo0.0;
interface ge-0/0/14.0;
}
}

And the Mikrotik's OSPF:

> routing ospf export
/routing ospf instance
set [ find default=yes ] router-id=3.3.3.34
/routing ospf interface
add interface=lo0
/routing ospf network
add area=backbone network=172.16.1.24/30
> interface bridge export 
/interface bridge
add admin-mac=01:00:00:00:01:00 auto-mac=no name=lo0

Here's the Juniper's OSPF status:

> show ospf database 
OSPF database, Area 0.0.0.0
Type ID Adv Rtr Seq Age Opt Cksum Len 
Router *3.3.3.32 3.3.3.32 0x8000000e 221 0x22 0xd715 48
Router 3.3.3.34 3.3.3.34 0x8000000b 410 0x2 0x69d1 36
Network *172.16.1.25 3.3.3.32 0x80000007 2007 0x22 0xc022 32
> show ospf neighbor 
Address Interface State ID Pri Dead
172.16.1.26 ge-0/0/14.0 Full 3.3.3.34 1 29

And the MTik's status:

> routing ospf neighbor pr
0 instance=default router-id=3.3.3.32 address=172.16.1.25 interface=ether1 priority=128 dr-address=172.16.1.25 backup-dr-address=172.16.1.26 state="Full" state-changes=6 
ls-retransmits=0 ls-requests=0 db-summaries=0 adjacency=4h38m42s
ip route pr 
Flags: X - disabled, A - active, D - dynamic, C - connect, S - static, r - rip, b - bgp, o - ospf, m - mme, B - blackhole, U - unreachable, P - prohibit 
# DST-ADDRESS PREF-SRC GATEWAY DISTANCE
0 ADo 3.3.3.32/32 172.16.1.25 110
1 ADC 3.3.3.34/32 3.3.3.34 lo0 0
2 ADC 172.16.1.24/30 172.16.1.26 ether1 0
3 DC 192.168.88.0/24 192.168.88.1 ether10 255

I'm not sure if this is quite correct. I can ping the SRX's loopback address from the Mikrotik but not the reverse. From the SRX I get:

> ping 3.3.3.34 
PING 3.3.3.34 (3.3.3.34): 56 data bytes
ping: sendto: No route to host

Seems like I'm missing something fundamental on the SRX. Can anyone help?

Many thanks for reading

NTB

Hello,

I am no expert on Mikrotik, but it looks like it does not advertise its lo0 prefix to SRX.

Please post the following SRX printout:

show ospf database extensive

I am guessing that following Mikrotik command could help:

/routing ospf network
add area=backbone network=3.3.3.34/32

HTH

Thx

Alex

That was it!  I got the answer from the Mikrotik forum as well.

Many thanks for your help

NTB

8o)