bgpd: use AS4B format for BGP loc-rib messages. #18936
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ci:rerun |
eqvinox
reviewed
Jun 3, 2025
| @@ -3542,6 +3542,9 @@ static struct bgp *bgp_create(as_t *as, const char *name, | |||
| if (cmd_domainname_get()) | |||
| bgp->peer_self->domainname = | |||
| XSTRDUP(MTYPE_BGP_PEER_HOST, cmd_domainname_get()); | |||
| SET_FLAG(bgp->peer_self->cap, PEER_CAP_AS4_RCV); | |||
| SET_FLAG(bgp->peer_self->cap, PEER_CAP_AS4_ADV); | |||
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Looks correct, but could you add a comment above saying that this is for BMP Loc-RIB? It's very non-obvious otherwise.
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added the comment.thanks for the suggestion.
eqvinox
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Jun 3, 2025
An incoming BGP prefix encapsulated in LOC-RIB BMP message, encodes AS-Paths information in AS2B. This is not what the RFC9069, ch.5.4.1: > Loc-RIB Route Monitoring messages MUST use a 4-byte ASN encoding as > indicated in the Peer Up sent OPEN message (Section 5.2) capability. Set the appropriate flags in the peer_self structure, to encode AS information for loc-rib in AS4B format. Signed-off-by: Philippe Guibert <philippe.guibert@6wind.com>
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@Mergifyio backport stable/10.3 stable/10.2 stable/10.1 |
✅ Backports have been created
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This was referenced Jun 4, 2025
donaldsharp
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bgpd: use AS4B format for BGP loc-rib messages. (backport #18936)
donaldsharp
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bgpd: use AS4B format for BGP loc-rib messages. (backport #18936)
donaldsharp
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bgpd: use AS4B format for BGP loc-rib messages. (backport #18936)
ton31337
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Aug 2, 2025
* bgpd: correct no form commands (backport FRRouting#18911) * bgpd: fix to show exist/non-exist-map in 'show run' properly FRRouting#18853 * redhat: make FRR RPM build to work on RedHat 10 (backport FRRouting#18920) * build: check for libunwind.h, not unwind.h (backport FRRouting#18912) * bgpd: use AS4B format for BGP loc-rib messages. (backport FRRouting#18936) * bgpd: fix for the validity and the presence of prefixes in the BGP VPN table. (backport FRRouting#17370) * bgpd: Force adj-rib-out updates if MRAI is kicked in (backport FRRouting#18959) * zebra: Provide SID value when sending SRv6 SID release notify message (backport FRRouting#18971) * bgpd: Fix crash when fetching statistics for bgp instance (backport FRRouting#19003) * nhrpd: fix crash when accessing invalid memory zone (backport FRRouting#18994) * zebra: Initialize RB tree for router tables (backport FRRouting#19049) * zebra: fix null pointer dereference in zebra_evpn_sync_neigh_del (backport FRRouting#19054) * zebra: fix stale NHG in kernel (backport FRRouting#18899) * bgpd: Fix incorrect stripping of transitive extended communities (backport FRRouting#19065) * lib: Fix no on-match goto NUM command (backport FRRouting#19108) * bgpd: Fix extended community check for IP non-transitive type (backport FRRouting#19097) * bgpd: Fix DEREF_OF_NULL.EX.COND in bgp_updgrp_packet (backport FRRouting#19126) * lib: revert addition of vtysh_flush() call in vty_out() (backport FRRouting#19109) * bgpd: Extract link bandwidth value from extcommunity before using for WCMP (backport FRRouting#19165) * Use ipv4 class E addresses (240.0.0.0/4) as connected routes by default (backport FRRouting#18095) * bfdd: Set bfd.LocalDiag when transitioning to AdminDown (backport FRRouting#18592) * zebra: clean up a json object leak (backport FRRouting#19192) * bgpd: Do not try to reuse freed route-maps (backport FRRouting#19191) * lib: fix routemap crash (backport FRRouting#19127) * bgpd: initialize local variable (backport FRRouting#19233) * ospfd: Use after free cleanup of lsa (backport FRRouting#19224) * vtysh: copy config from file should actually apply (backport FRRouting#19242) * bgpd : Fix compilation error in bgpd module: Update TP_ARGS for bgp (backport FRRouting#19266) * bgpd: Ensure addpath does not withdraw selected route in some situations (backport FRRouting#19210) * lib, zebra: mark singleton nexthops inactive/active on link state changes for wecmp (backport FRRouting#18947) * eigrp: validate hello packets and tlvs better (backport FRRouting#19251) * bgpd: [GR] fixed selectionDeferralTimer to display select_defer_time val FRRouting#19283 Signed-off-by: Donatas Abraitis <donatas@opensourcerouting.org>
ton31337
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Aug 2, 2025
* bgpd: correct no form commands (backport FRRouting#18911) * build: check for libunwind.h, not unwind.h (backport FRRouting#18912) * redhat: make FRR RPM build to work on RedHat 10 (backport FRRouting#18920) * bgpd: use AS4B format for BGP loc-rib messages. (backport FRRouting#18936) * bgpd: Force adj-rib-out updates if MRAI is kicked in (backport FRRouting#18959) * zebra: Provide SID value when sending SRv6 SID release notify message (backport FRRouting#18971) * nhrpd: fix crash when accessing invalid memory zone (backport FRRouting#18994) * lib: Fix no on-match goto NUM command (backport FRRouting#19108) * bgpd: Fix DEREF_OF_NULL.EX.COND in bgp_updgrp_packet (backport FRRouting#19126) * bgpd: Extract link bandwidth value from extcommunity before using for WCMP (backport FRRouting#19165) * bfdd: Set bfd.LocalDiag when transitioning to AdminDown (backport FRRouting#18592) * bgpd: Do not try to reuse freed route-maps (backport FRRouting#19191) * lib: fix routemap crash (backport FRRouting#19127) * lib, zebra: mark singleton nexthops inactive/active on link state changes for wecmp (backport FRRouting#18947) * bgpd: [GR] fixed selectionDeferralTimer to display select_defer_time val FRRouting#19284 Signed-off-by: Donatas Abraitis <donatas@opensourcerouting.org>
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An incoming BGP prefix encapsulated in LOC-RIB BMP message, encodes AS-Paths information in AS2B. This is not what the RFC9069, ch.5.4.1:
Set the appropriate flags in the peer_self structure, to encode AS information for loc-rib in AS4B format.