When a dynamic route is declared through RIP, there is no equal-cost route and only one next hop

[hothotstreet]

environment：Openwrt frr:version 7.2-dev

The topology diagram is as follows：

Both sides learn routes through RIP, but R2 has only one next hop Configuration is as follows：

R1： router rip network wan network lan0 network br-lan1

R2: router rip network wan network lan0

R2's route: Ti-C2281# show ip rip status Routing Protocol is "rip" Sending updates every 30 seconds with +/-50%, next due in 7 seconds Timeout after 180 seconds, garbage collect after 120 seconds Outgoing update filter list for all interface is not set Incoming update filter list for all interface is not set Default redistribution metric is 1 Redistributing: Default version control: send version 2, receive any version Interface Send Recv Key-chain lan0 2 1 2
wan 2 1 2
Routing for Networks: wan lan0 Routing Information Sources: Gateway BadPackets BadRoutes Distance Last Update 10.0.0.1 0 0 120 00:00:23 10.1.0.1 0 0 120 00:00:23 Distance: (default is 120) Ti-C2281# Ti-C2281# show ip route Codes: K - kernel route, C - connected, S - static, R - RIP, O - OSPF, I - IS-IS, B - BGP, E - EIGRP, N - NHRP, T - Table, v - VNC, V - VNC-Direct, A - Babel, D - SHARP, F - PBR, f - OpenFabric, > - selected route, * - FIB route, q - queued route, r - rejected route

C>* 10.0.0.0/24 is directly connected, lan0, 00:31:41 C>* 10.1.0.0/24 is directly connected, wan, 00:48:16 R>* 172.16.1.0/24 [120/2] via 10.0.0.1, lan0, 00:30:03

[donaldsharp]

show ip rip as well as show ver please

[hothotstreet]

Ti-C2281# show version FRRouting 7.2-dev (Ti-C2281). Copyright 1996-2005 Kunihiro Ishiguro, et al. configured with: '--host=aarch64-openwrt-linux' '--build=x86_64-pc-linux-gnu' 'HOST_CFLAGS=-O2 -I/root/nmxx-openwrt-1806601/staging_dir/host/include -I/root/nmxx-openwrt-1806601/staging_dir/hostpkg/include -I/root/nmxx-openwrt-1806601/staging_dir/target-aarch64_cortex-a53_musl/host/include' 'HOST_LDFLAGS=-L/root/nmxx-openwrt-1806601/staging_dir/host/lib -L/root/nmxx-openwrt-1806601/staging_dir/hostpkg/lib -L/root/nmxx-openwrt-1806601/staging_dir/target-aarch64_cortex-a53_musl/host/lib' 'BUILD_CPPFLAGS=' 'BUILD_CFLAGS=-Os -pipe -mcpu=cortex-a53 -fno-caller-saves -fno-plt -fhonour-copts -Wno-error=unused-but-set-variable -Wno-error=unused-result -iremap/root/nmxx-openwrt-1806601/build_dir/target-aarch64_cortex-a53_musl/frr-ce746edebb88320af871d6e4bc42a8022f7c1da5:frr-ce746edebb88320af871d6e4bc42a8022f7c1da5 -Wformat -Werror=format-security -fstack-protector -D_FORTIFY_SOURCE=1 -Wl,-z,now -Wl,-z,relro' 'BUILD_LDFLAGS=-L/root/nmxx-openwrt-1806601/staging_dir/target-aarch64_cortex-a53_musl/usr/lib -L/root/nmxx-openwrt-1806601/staging_dir/target-aarch64_cortex-a53_musl/lib -L/root/nmxx-openwrt-1806601/staging_dir/toolchain-aarch64_cortex-a53_gcc-7.3.0_musl/usr/lib -L/root/nmxx-openwrt-1806601/staging_dir/toolchain-aarch64_cortex-a53_gcc-7.3.0_musl/lib -znow -zrelro' '--prefix=/usr' '--enable-shared' '--disable-static' '--enable-user=network' '--enable-group=network' '--enable-multipath=16' '--disable-capabilities' '--disable-ospfclient' '--disable-doc' '--with-vtysh-pager=cat' '--localstatedir=/var/run/frr' '--sysconfdir=/etc/frr/' '--disable-babeld' '--disable-bfdd' '--enable-bgpd' '--disable-eigrpd' '--disable-fabricd' '--enable-isisd' '--disable-ldpd' '--disable-nhrpd' '--enable-ospfd' '--disable-ospf6d' '--disable-pbrd' '--disable-pimd' '--enable-staticd' '--enable-ripd' '--disable-ripngd' '--disable-vrrpd' '--enable-vtysh' '--enable-zebra' 'build_alias=x86_64-pc-linux-gnu' 'host_alias=aarch64-openwrt-linux' 'PKG_CONFIG=/root/nmxx-openwrt-1806601/staging_dir/host/bin/pkg-config' 'PKG_CONFIG_PATH=/root/nmxx-openwrt-1806601/staging_dir/target-aarch64_cortex-a53_musl/usr/lib/pkgconfig:/root/nmxx-openwrt-1806601/staging_dir/target-aarch64_cortex-a53_musl/usr/share/pkgconfig' 'PKG_CONFIG_LIBDIR=/root/nmxx-openwrt-1806601/staging_dir/target-aarch64_cortex-a53_musl/usr/lib/pkgconfig:/root/nmxx-openwrt-1806601/staging_dir/target-aarch64_cortex-a53_musl/usr/share/pkgconfig' Ti-C2281# show ip rip Codes: R - RIP, C - connected, S - Static, O - OSPF, B - BGP Sub-codes: (n) - normal, (s) - static, (d) - default, (r) - redistribute, (i) - interface

 Network            Next Hop         Metric From            Tag Time

C(i) 10.0.0.0/24 0.0.0.0 1 self 0 C(i) 10.1.0.0/24 0.0.0.0 1 self 0 R(n) 172.16.1.0/24 10.1.0.1 2 10.1.0.1 0 02:47

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[github-actions[bot]]

This issue is stale because it has been open 180 days with no activity. Comment or remove the autoclose label in order to avoid having this issue closed.

[frrbot[bot]]

This issue will be automatically closed in the specified period unless there is further activity.