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--- documentation:examples:ecmp [2020/09/23 14:49] – [Testing Load balancing] olivier
+++ documentation:examples:ecmp [2020/09/23 14:56] – [FRR Multipath setup] olivier
@@ Line 236: / Line 236: @@
 ===== FRR Multipath setup =====
+Replacing static routes by FRR (OSPF) compiled with MULTIPATH option.
+==== R1 (ECMP router) ====
+In place of static routes, FRR is enabled:
+<code>
+sysrc frr_vtysh_boot="YES" \
+  frr_enable="YES" \
+  frr_daemons="zebra ospfd ospf6d" \
+  watchfrr_flags=" -d -r /usr/sbin/servicebBfrrbBrestartbB%s -s /usr/sbin/servicebBfrrbBstartbB%s -k /usr/sbin/servicebBfrrbBstopbB%s -b bB -t 30 zebra ospfd ospf6d" \
+  watchfrr_enable="YES"
+cat > /usr/local/etc/frr/frr.conf <EOF
+frr version 7.4
+frr defaults traditional
+hostname router1
+!
+router ospf
+ ospf router-id 1.1.1.1
+ passive-interface igb0
+ network 10.0.31.0/24 area 0
+ network 10.0.112.0/24 area 0
+ network 10.0.212.0/24 area 0
+!
+line vty
+!
+EOF
+service frr start
+service watchfrr start
+</code>
+==== R2 (ECMP router) ====
+In place of static routes, FRR is enabled:
+<code>
+sysrc frr_vtysh_boot="YES" \
+  frr_enable="YES" \
+  frr_daemons="zebra ospfd ospf6d" \
+  watchfrr_flags=" -d -r /usr/sbin/servicebBfrrbBrestartbB%s -s /usr/sbin/servicebBfrrbBstartbB%s -k /usr/sbin/servicebBfrrbBstopbB%s -b bB -t 30 zebra ospfd ospf6d" \
+  watchfrr_enable="YES"
+cat > /usr/local/etc/frr/frr.conf <EOF
+frr version 7.4
+frr defaults traditional
+hostname router2
+!
+router ospf
+ ospf router-id 2.2.2.2
+ passive-interface igb0
+ network 10.0.24.0/24 area 0
+ network 10.0.112.0/24 area 0
+ network 10.0.212.0/24 area 0
+!
+line vty
+!
+EOF
+service frr start
+service watchfrr start
+</code>
+==== Checking routes installed ====
+On R1:
+<code>
+[root@router1]~# vtysh
+Hello, this is FRRouting (version 7.4).
+Copyright 1996-2005 Kunihiro Ishiguro, et al.
+homelab1# sh ip route 10.0.24.0/24
+Routing entry for 10.0.24.0/24
+  Known via "ospf", distance 110, metric 20, best
+  Last update 00:06:39 ago
+  * 10.0.112.2, via igb1, weight 1
+  * 10.0.212.2, via igb2, weight 1
+router1# exit
+[root@router1]~# netstat -rn4 | grep 10.0.24.0/24
+.0.24.0/24       10.0.212.2         UG1        igb2
+.0.24.0/24       10.0.112.2         UG1        igb1
+</code>
 === Testing Load balancing ===