Zywall 310 not advertising default route by BGP
Afternoon again.
Zywall 310 (Firmware Version:V4.71(AAAB.0) / 2022-02-22 20:44:02)
Ive now got this router up and working, running BGP all routers are communicating ok. this is all LAN side, the 310 is providing internet access to IPs inside advertised via BGP
Below screen shot see im advertising 8.8.8.8/32 & 0.0.0.0/0
The other routers get >
xxxS.inet.0: 13 destinations, 26 routes (12 active, 0 holddown, 2 hidden)
Prefix Nexthop MED Lclpref AS path
* 8.8.8.8/32 172.x.x.x 0 65002 I
* 157.x.x.x/29 172.x.x.x 0 65002 ?
172.x.x.x/29 172.x.x.x 0 65002 ?
* 192.168.2.0/24 172.x.x.x 0 65002 ?
* 192.168.3.0/24 172.x.x.x 0 65002 ?
* 192.168.25.192/26 172.x.x.x 0 65002 ?
* 192.168.100.0/24 172.x.x.x 0 65002 ?
Prefix Nexthop MED Lclpref AS path
* 8.8.8.8/32 172.x.x.x 0 65002 I
* 157.x.x.x/29 172.x.x.x 0 65002 ?
172.x.x.x/29 172.x.x.x 0 65002 ?
* 192.168.2.0/24 172.x.x.x 0 65002 ?
* 192.168.3.0/24 172.x.x.x 0 65002 ?
* 192.168.25.192/26 172.x.x.x 0 65002 ?
* 192.168.100.0/24 172.x.x.x 0 65002 ?
So in my testing from inside hte network we can only ping 8.8.8.8 but nothing else
Then if i do this
we see this on the BGP partners >>
xxxS.inet.0: 13 destinations, 26 routes (12 active, 0 holddown, 2 hidden)
Prefix Nexthop MED Lclpref AS path
* 0.0.0.0/1 172.x.x.x 0 65002 I
* 157.x.x.x/29 172.x.x.x 0 65002 ?
172.x.x.x/29 172.x.x.x 0 65002 ?
* 192.168.2.0/24 172.x.x.x 0 65002 ?
* 192.168.3.0/24 172.x.x.x 0 65002 ?
* 192.168.25.192/26 172.x.x.x 0 65002 ?
* 192.168.100.0/24 172.x.x.x 0 65002 ?
Prefix Nexthop MED Lclpref AS path
* 0.0.0.0/1 172.x.x.x 0 65002 I
* 157.x.x.x/29 172.x.x.x 0 65002 ?
172.x.x.x/29 172.x.x.x 0 65002 ?
* 192.168.2.0/24 172.x.x.x 0 65002 ?
* 192.168.3.0/24 172.x.x.x 0 65002 ?
* 192.168.25.192/26 172.x.x.x 0 65002 ?
* 192.168.100.0/24 172.x.x.x 0 65002 ?
And all works fine.
Obviously all though working this isnt the textbook default route.
Any ideas why routers are not recieving 0.0.0.0/0
I can do pcaps if reqd
Thanks in advance
0
All Replies
-
The BGP design of ZyWALL is to not announce the default route (0.0.0.0/0)
It need to enable by CLI command:
Router(config)# router bgp
Router(config-router)# neighbor w.x.y.z default-originate
Router(config-router)# exit
Router(config)# write
0
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