How to import route and NOT withdraw existing route ?
Hi all, Now I need a feature, I have to import neighbor as vlink route into bgpd. So I use static route like this:
vtysh ip route 1.1.1.1/32 Vlan100 redistribute static route-map XXX
But I encounter a problem:
before I add static route, there are B route like this: B 2.2.2.100/32 [20/0] via 100.0.28.231, Ethernet52, src 1.1.1.230, 3d03h18m after I add static route, there are two route like this: S>* 2.2.2.100/32 [1/0] is directly connected, Vlan100 B 2.2.2.100/32 [20/0] via 100.0.28.231, Ethernet52, src 1.1.1.230, 3d03h18m after I redistribute, there are only one route like this: S>* 2.2.2.100/32 [1/0] is directly connected, Vlan100
But what I need is to keep two route. Because if there is only one route, I have to relearn B route after I delete static route, which will cause package loss in long time(like 20 second). For some producer like huawei, thay have 'import route' command, which will combine redistributed route and learned route, like this: https://support.huawei.com/enterprise/en/doc/EDOC1000178171/cc777bfe/configu... So will FRR support this feature ? How to import route and NOT withdraw existing route ? ---- Simon Jones
Maybe this is caused by 'no ip route' command? So is there some command like 'no ip route XXX type=static' :~# vtysh -c 'show ip bgp 177.0.1.102/32' BGP routing table entry for 177.0.1.102/32 Paths: (3 available, best #3, table Default-IP-Routing-Table) Advertised to non peer-group peers: 100.0.28.231 100.0.30.232 235 229 100.0.30.232 from 100.0.30.232 (1.1.1.252) Origin incomplete, localpref 100, valid, external Last update: Tue Mar 24 09:08:57 2020 235 229 100.0.28.231 from 100.0.28.231 (100.0.28.231) Origin incomplete, localpref 100, valid, external Last update: Tue Mar 24 09:08:55 2020 Local 0.0.0.0 from 0.0.0.0 (1.1.1.230) Origin incomplete, metric 1, localpref 100, weight 32768, valid, sourced, best Community: 0:100 Last update: Tue Mar 24 08:45:32 2020 :~# vtysh -c 'show ip route 177.0.1.102/32' Routing entry for 177.0.1.102/32 Known via "static", distance 1, metric 0, best * directly connected, Vlan100 :~# vtysh -c 'configure terminal' -c 'no ip route 177.0.1.102/32 Vlan100' :~# vtysh -c 'show ip route 177.0.1.102/32' % Network not in table :~# vtysh -c 'show ip bgp 177.0.1.102/32' % Network not in table :~# vtysh -c 'show ip bgp 177.0.1.102/32' BGP routing table entry for 177.0.1.102/32 Paths: (2 available, best #2, table Default-IP-Routing-Table) Advertised to non peer-group peers: 100.0.30.232 235 229 100.0.30.232 from 100.0.30.232 (1.1.1.252) Origin incomplete, localpref 100, valid, external, multipath Last update: Tue Mar 24 09:25:54 2020 235 229 100.0.28.231 from 100.0.28.231 (100.0.28.231) Origin incomplete, localpref 100, valid, external, multipath, best Last update: Tue Mar 24 09:25:50 2020 ---- Simon Jones Simon Jones <batmanustc@gmail.com> 于2020年3月24日周二 上午10:56写道：
Hi all,
Now I need a feature, I have to import neighbor as vlink route into bgpd.
So I use static route like this:
vtysh ip route 1.1.1.1/32 Vlan100 redistribute static route-map XXX
But I encounter a problem:
before I add static route, there are B route like this: B 2.2.2.100/32 [20/0] via 100.0.28.231, Ethernet52, src 1.1.1.230, 3d03h18m after I add static route, there are two route like this: S>* 2.2.2.100/32 [1/0] is directly connected, Vlan100 B 2.2.2.100/32 [20/0] via 100.0.28.231, Ethernet52, src 1.1.1.230, 3d03h18m after I redistribute, there are only one route like this: S>* 2.2.2.100/32 [1/0] is directly connected, Vlan100
But what I need is to keep two route. Because if there is only one route, I have to relearn B route after I delete static route, which will cause package loss in long time(like 20 second).
For some producer like huawei, thay have 'import route' command, which will combine redistributed route and learned route, like this:
https://support.huawei.com/enterprise/en/doc/EDOC1000178171/cc777bfe/configu...
So will FRR support this feature ? How to import route and NOT withdraw existing route ?
---- Simon Jones
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Simon Jones