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When a BGP nexthop is registered for resolution, if it is learnt from an EBGP peer and other conditions warrant (non-multihop peer and connected check is not disabled), the registration includes a flag that indicates that the nexthop must be resolved only if it is directly connected. In peculiar situations - e.g., third-party nexthop or policy configuration - the same nexthop could be learnt from an IBGP peer, and in general, nexthops learnt from IBGP peers can be resolved over any route. This scenario was causing a churn in the nexthop registration with the 'must-be-connected' flag being repeatedly toggled as routes are received from both peers. The registrations would in turn trigger significant processing. The fix is to treat 'must-be-connected' as an overriding condition. The repeated registration and related processing was also causing heavy memory usage by BGP - for memory buffers used to hold registration information. This fix will ensure that is no longer the case. Signed-off-by: Vivek Venkatraman <vivek@cumulusnetworks.com> Reviewed-by: Donald Sharp <sharpd@cumulusnetworks.com> Ticket: CM-8005, CM-8013 Reviewed By: CCR-3772 Testing Done: Manual, bgpsmoke (on 2.5-br) |
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| babeld | ||
| bgpd | ||
| cumulus/etc | ||
| debian | ||
| doc | ||
| fpm | ||
| init | ||
| isisd | ||
| lib | ||
| m4 | ||
| ospf6d | ||
| ospfclient | ||
| ospfd | ||
| pkgsrc | ||
| ports | ||
| redhat | ||
| ripd | ||
| ripngd | ||
| solaris | ||
| tests | ||
| tools | ||
| vtysh | ||
| watchquagga | ||
| zebra | ||
| .gitignore | ||
| AUTHORS | ||
| bootstrap.sh | ||
| buildtest.sh | ||
| ChangeLog | ||
| configure.ac | ||
| COPYING | ||
| COPYING.LIB | ||
| HACKING.pending | ||
| HACKING.tex | ||
| INSTALL.quagga.txt | ||
| Makefile.am | ||
| NEWS | ||
| README | ||
| README.NetBSD | ||
| REPORTING-BUGS | ||
| SERVICES | ||
| stamp-h.in | ||
| TODO | ||
| update-autotools | ||
Quagga is free software that manages various IPv4 and IPv6 routing protocols. Currently Quagga supports BGP4, BGP4+, OSPFv2, OSPFv3, RIPv1, RIPv2, and RIPng as well as very early support for IS-IS. See the file INSTALL.quagga.txt for building and installation instructions. See the file REPORTING-BUGS to report bugs. Quagga is free software. See the file COPYING for copying conditions.