1
22.1 Legacy Series / Re: Multipath with FRR + OSPF + ECMP
« on: May 26, 2022, 08:01:56 pm »And you do have multiple streams from multiple source IP addresses?
yes, about 100 computers connected on each router
Show Posts
This section allows you to view all posts made by this member. Note that you can only see posts made in areas you currently have access to.
Pages: [1]
yes, about 100 computers connected on each router
2
22.1 Legacy Series / Re: Multipath with FRR + OSPF + ECMP
« on: May 25, 2022, 10:02:28 pm »
No, my traffic is not balanced between tunnels, only one is being used.
3
22.1 Legacy Series / Re: Multipath with FRR + OSPF + ECMP
« on: May 25, 2022, 09:40:52 pm »Routing table please
making some tests, I found that is some cache of the GW used to access the hosts based on source:
root@rt-wan:/ # traceroute 10.70.70.1
traceroute to 10.70.70.1 (10.70.70.1), 64 hops max, 40 byte packets
1 172.16.102.2 (172.16.102.2) 19.743 ms 21.152 ms 19.547 ms
root@rt-wan:/ # traceroute 10.70.70.4
traceroute to 10.70.70.4 (10.70.70.4), 64 hops max, 40 byte packets
1 172.16.101.2 (172.16.101.2) 27.260 ms 31.595 ms 32.289 ms
root@rt-wan:/ # traceroute 10.70.70.4
traceroute to 10.70.70.4 (10.70.70.4), 64 hops max, 40 byte packets
1 172.16.101.2 (172.16.101.2) 21.710 ms 21.000 ms 26.908 ms
root@rt-wan:/ # traceroute 10.70.70.1
traceroute to 10.70.70.1 (10.70.70.1), 64 hops max, 40 byte packets
1 172.16.102.2 (172.16.102.2) 21.986 ms 20.134 ms 21.027 ms
removed some unnecessary data:
# netstat -r4
Routing tables
Internet:
Destination Gateway Flags Netif Expire
default 10.x.x.x UGS em0
rt-wan link#1 UHS lo0
10.20.0.161 link#1 UH lo0
10.20.0.162 link#1 UH lo0
10.70.0.0/16 172.16.102.2 UG1 gre1
10.70.0.0/16 172.16.101.2 UG1 gre0
10.70.0.151 10.20.0.50 UGHS em0
10.70.0.152 10.20.0.90 UGHS em0
localhost link#4 UH lo0
172.16.101.1 link#7 UHS lo0
172.16.101.2 link#7 UH gre0
172.16.102.1 link#8 UHS lo0
172.16.102.2 link#8 UH gre1
4
22.1 Legacy Series / Re: Multipath with FRR + OSPF + ECMP
« on: May 25, 2022, 07:03:46 pm »
checked the conf and they are enabled:
# sysctl net.route
net.route.netisr_maxqlen: 256
net.route.ipv6_nexthop: 1
net.route.multipath: 1
net.route.hash_outbound: 1
I am monitoring the traffic for a few hours, and it is not alternanting the ECMP route
# sysctl net.route
net.route.netisr_maxqlen: 256
net.route.ipv6_nexthop: 1
net.route.multipath: 1
net.route.hash_outbound: 1
I am monitoring the traffic for a few hours, and it is not alternanting the ECMP route
5
22.1 Legacy Series / Multipath with FRR + OSPF + ECMP
« on: May 25, 2022, 03:14:08 pm »
Hello,
I am creating a network between two offices, with two separate links, and using two opnsense connected via GRE tunnel: I created a route for each link, using the corresponding gateway, and distributed the routes with FRR+OSPF. This part is working fine, I can see both routes with "netstat -r". The problem is that the system chooses one of the routes as preferred and does not balance between them by ECMP.
I only managed to balance it through a rule in the firewall, but this invalidates the use of OSPF, and I did not intend to use opnsense as a firewall on this network, only as a router, since all types of traffic are authorized in this network.
Is there a setting I'm missing?
I am creating a network between two offices, with two separate links, and using two opnsense connected via GRE tunnel: I created a route for each link, using the corresponding gateway, and distributed the routes with FRR+OSPF. This part is working fine, I can see both routes with "netstat -r". The problem is that the system chooses one of the routes as preferred and does not balance between them by ECMP.
I only managed to balance it through a rule in the firewall, but this invalidates the use of OSPF, and I did not intend to use opnsense as a firewall on this network, only as a router, since all types of traffic are authorized in this network.
Is there a setting I'm missing?
Pages: [1]