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| author | Anuradha Karuppiah <anuradhak@nvidia.com> | 2021-06-04 02:28:43 +0200 |
|---|---|---|
| committer | Donald Sharp <sharpd@nvidia.com> | 2022-03-18 12:37:06 +0100 |
| commit | 7b0db0e43fd470e2d386c36722069c0f8730f6c8 (patch) | |
| tree | 45d772eb740c08fd8e797832bf8a531801a19c10 /lib | |
| parent | bgpd: evpn mh changes to advertise EAD routes with user configured export-rt (diff) | |
| download | frr-7b0db0e43fd470e2d386c36722069c0f8730f6c8.tar.xz frr-7b0db0e43fd470e2d386c36722069c0f8730f6c8.zip | |
lib, bgpd: changes for EAD-per-ES fragmentation
The EAD-per-ES route carries ECs for all the ES-EVI RTs. As the number of VNIs
increase all RTs do not fit into a standard BGP UPDATE (4K) so the route needs
to be fragmented.
Each fragment is associated with a separate RD and frag-id -
1. Local ES-per-EAD -
ES route table - {ES-frag-ID, ESI, ET=0xffffffff, VTEP-IP}
global route table - {RD-=ES-frag-RD, ESI, ET=0xffffffff}
2. Remote ES-per-EAD -
VNI route table - {ESI, ET=0xffffffff, VTEP-IP}
global route table - {RD-=ES-frag-RD, ESI, ET=0xffffffff}
Note: The fragment ID is abandoned in the per-VNI routing table. At this
point that is acceptable as we dont expect more than one-ES-per-EAD fragment
to be imported into the per-VNI routing table. But that may need to be
re-worked at a later point.
CLI changes (sample with 4 VNIs per-fragment for experimental pruposes) -
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
root@torm-11:mgmt:~# vtysh -c "show bgp l2vpn evpn es 03:44:38:39:ff:ff:01:00:00:01"
ESI: 03:44:38:39:ff:ff:01:00:00:01
Type: LR
RD: 27.0.0.21:3
Originator-IP: 27.0.0.21
Local ES DF preference: 50000
VNI Count: 10
Remote VNI Count: 10
VRF Count: 3
MACIP EVI Path Count: 33
MACIP Global Path Count: 198
Inconsistent VNI VTEP Count: 0
Inconsistencies: -
Fragments: >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
27.0.0.21:3 EVIs: 4
27.0.0.21:13 EVIs: 4
27.0.0.21:22 EVIs: 2
VTEPs:
27.0.0.22 flags: EA df_alg: preference df_pref: 32767
27.0.0.23 flags: EA df_alg: preference df_pref: 32767
root@torm-11:mgmt:~# vtysh -c "show bgp l2vpn evpn es-evi vni 1002 detail"
VNI: 1002 ESI: 03:44:38:39:ff:ff:01:00:00:01
Type: LR
ES fragment RD: 27.0.0.21:13 >>>>>>>>>>>>>>>>>>>>>>>>>
Inconsistencies: -
VTEPs: 27.0.0.22(EV),27.0.0.23(EV)
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
PS: The number of EVIs per-fragment has been set to 128 and may need further
tuning.
Ticket: #2632967
Signed-off-by: Anuradha Karuppiah <anuradhak@nvidia.com>
Diffstat (limited to '')
| -rw-r--r-- | lib/prefix.c | 7 | ||||
| -rw-r--r-- | lib/prefix.h | 1 |
2 files changed, 5 insertions, 3 deletions
diff --git a/lib/prefix.c b/lib/prefix.c index 89c5be8f3..4db0c2478 100644 --- a/lib/prefix.c +++ b/lib/prefix.c @@ -915,12 +915,13 @@ static const char *prefixevpn_ead2str(const struct prefix_evpn *p, char *str, char buf1[INET6_ADDRSTRLEN]; family = IS_IPADDR_V4(&p->prefix.ead_addr.ip) ? AF_INET : AF_INET6; - snprintf(str, size, "[%d]:[%u]:[%s]:[%d]:[%s]", p->prefix.route_type, - p->prefix.ead_addr.eth_tag, + snprintf(str, size, "[%d]:[%u]:[%s]:[%d]:[%s]:[%u]", + p->prefix.route_type, p->prefix.ead_addr.eth_tag, esi_to_str(&p->prefix.ead_addr.esi, buf, sizeof(buf)), (family == AF_INET) ? IPV4_MAX_BITLEN : IPV6_MAX_BITLEN, inet_ntop(family, &p->prefix.ead_addr.ip.ipaddr_v4, buf1, - sizeof(buf1))); + sizeof(buf1)), + p->prefix.ead_addr.frag_id); return str; } diff --git a/lib/prefix.h b/lib/prefix.h index b3545a72b..816a1517e 100644 --- a/lib/prefix.h +++ b/lib/prefix.h @@ -95,6 +95,7 @@ struct evpn_ead_addr { esi_t esi; uint32_t eth_tag; struct ipaddr ip; + uint16_t frag_id; }; struct evpn_macip_addr { |