Re: ROUTE_MPATH and hashing
- Reply: Mark Kamichoff : "Re: ROUTE_MPATH and hashing"
- In reply to: Mark Kamichoff : "ROUTE_MPATH and hashing"
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Date: Mon, 20 Sep 2021 23:06:50 UTC
> On 17 Sep 2021, at 01:36, Mark Kamichoff <prox@prolixium.com> wrote: > > Hi - > Hi Mark, > Does anyone here know how to tweak the hashing algorithm (per flow/packet/x) > that's used for the new ROUTE_MPATH option that's in 13? > > I'm using FRR 7 and I see both routes in the FIB but only one is ever > chosen and takes traffic. Is it IPv6 forwarding or the packets are originated locally? In case of former, what is the receive interface? (e.g. is it tun as well)? > > (dax:20:23:EDT)% show ipv6 route 2620:6:2003:105::/64 > Routing entry for 2620:6:2003:105::/64 > Known via "bgp", distance 20, metric 0, best > Last update 08:24:34 ago > 2620:6:2000:104::35 (recursive), weight 1 > * 2620:6:2000:1ff::10c2, via tun9, weight 1 > * 2620:6:2000:1ff::1172, via tun12, weight 1 > > (dax:20:23:EDT)% netstat -rn|grep 2620:6:2003:105::/64 > 2620:6:2003:105::/64 2620:6:2000:1ff::1172 UG1 tun12 > 2620:6:2003:105::/64 2620:6:2000:1ff::10c2 UG1 tun9 > (dax:20:23:EDT)% route -n6 get 2620:6:2003:105:: > route to: 2620:6:2003:105:: > destination: 2620:6:2003:105:: > mask: ffff:ffff:ffff:ffff:: > gateway: 2620:6:2000:1ff::1172 > fib: 0 > interface: tun12 > flags: <UP,GATEWAY,DONE,PROTO1> > recvpipe sendpipe ssthresh rtt,msec mtu weight expire > 0 0 0 0 1455 0 0 > (dax:20:23:EDT)% > > I didn't see any sysctls exposed but maybe I'm not looking in the right > place. > > - Mark > > -- > Mark Kamichoff > prox@prolixium.com > https://www.prolixium.com/ >