I'm trying to filter out the default router received by a neighbour. I know the root cause and I'll fix it ASAP but now I need to filter it out and I thought I'd use RPL to try something new since I'm configuring a new ASR 9001.
That's the 'prefix-set'/RPL section:
0.0.0.0/0 le 32
if destination in PS_DEFAULT then
if destination in PS_ALL-ROUTES then
And that's the relevant OSPF section:
router ospf <removed
log adjacency changes
route-policy RP_DENY-DEFAULT in
But the default is still there:
Tue Oct 23 18:00:02.909 Rome
Codes: C - connected, S - static, R - RIP, B - BGP, (>) - Diversion path
D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP
i - ISIS, L1 - IS-IS level-1, L2 - IS-IS level-2
ia - IS-IS inter area, su - IS-IS summary null, * - candidate default
U - per-user static route, o - ODR, L - local, G - DAGR, l - LISP
A - access/subscriber, a - Application route
M - mobile route, r - RPL, (!) - FRR Backup path
Gateway of last resort is x.x.x.x to network x.x.x.x
O*E1 0.0.0.0/0 [110/502] via x.x.x.x, 01:07:27, TenGigExxx
I'm running Cisco IOS XR Software, Version 6.2.3[Default]
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loadbalancing is one of the more complex items in hardware forwarding. of course we have talked about it many years on cisco live (id 2904) with ever incrementing more detail. and there is the support forum article on loadbalancing.
IntroductionArchitecture Building BlocksIOS-XR RoutersConfigurationPerformance VerificationOptimizationStrict timerSome more verificationThe CollectorInfluxDBDatabase statistics and HealthClosing comments
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