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BGP VIP management: render an IPv6 ToR peer on dual-stack deployments #1945

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BGP VIP management: render an IPv6 ToR peer on dual-stack deployments #1945

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5 changes: 4 additions & 1 deletion config_example.sh
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Original file line number Diff line number Diff line change
Expand Up @@ -253,11 +253,14 @@ set -x
# BGPBasedVIPManagement gate (DevPreviewNoUpgrade). The local ASN defaults
# to BGP_CLUSTER_ASN, the peer ASN to BGP_TOR_ASN, and the peer address to
# the ToR address on the external subnet; override the peer address with
# BGP_VIP_PEER_ADDRESS if your topology differs.
# BGP_VIP_PEER_ADDRESS if your topology differs. On dual-stack deployments
# a second peer is rendered for the ToR's IPv6 address on the external v6
# subnet (override with BGP_VIP_PEER_ADDRESS_V6).
# Default is unset.
#
#export BGP_VIP_MANAGEMENT=true
#export BGP_VIP_PEER_ADDRESS=
#export BGP_VIP_PEER_ADDRESS_V6=
#
# FRR container image:
#export BGP_TOR_IMAGE=quay.io/frrouting/frr:9.1.0
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11 changes: 10 additions & 1 deletion ocp_install_env.sh
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Original file line number Diff line number Diff line change
Expand Up @@ -200,7 +200,7 @@ EOF

function bgp_vip_config() {
if [[ "${BGP_VIP_MANAGEMENT:-false}" == "true" ]]; then
local peer_address
local peer_address peer_address_v6
peer_address="${BGP_VIP_PEER_ADDRESS:-$(nth_ip "${EXTERNAL_SUBNET_V4}" 1)}"
cat <<EOF
bgpVIPConfig:
Expand All @@ -209,6 +209,15 @@ cat <<EOF
- peerAddress: ${peer_address}
peerASN: ${BGP_TOR_ASN:-64513}
EOF
# dual-stack: peer with the ToR over IPv6 as well, so the
# secondary-family VIPs have a same-family BGP session
if [[ -n "${EXTERNAL_SUBNET_V6:-}" ]]; then
peer_address_v6="${BGP_VIP_PEER_ADDRESS_V6:-$(nth_ip "${EXTERNAL_SUBNET_V6}" 1)}"
cat <<EOF
- peerAddress: ${peer_address_v6}
peerASN: ${BGP_TOR_ASN:-64513}
EOF
fi
fi
}

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