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Inbound GRE configuration Guide #1114

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Chr1st0ph3rTurn3r merged 4 commits into from
Aug 13, 2026
Merged

Inbound GRE configuration Guide #1114

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Inbound GRE configuration Guide
MichaelBaj Aug 11, 2026
695626f
text edits for consistent voice, clarification.
Chr1st0ph3rTurn3r Aug 13, 2026
ba7fcd9
Merge branch 'master' into inbound-gre
MichaelBaj Aug 13, 2026
c723847
Merge branch 'master' into inbound-gre
Chr1st0ph3rTurn3r Aug 13, 2026
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4 changes: 4 additions & 0 deletions docs/config_gre_tunnel.md
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Expand Up @@ -9,6 +9,10 @@ Generic Routing Encapsulation (GRE) is a lightweight tunneling protocol that enc
This is not an SVR feature. GRE tunnels are not created to send packets between peered SSR routers. However, a packet coming from SVR can egress into a GRE tunnel, and vice versa.
:::

:::tip
A native GRE tunnel does not answer inbound ICMP health checks (keepalives) sent by a far-end peer. To make tunnels respond to these probes when peering with a cloud service such as Akamai, see [GRE Tunnel Health Checks And BGP Peering With Cloud Services](howto_gre_cloud_peering.md).
:::

## Sending Packets

When a GRE tunnel is configured, sessions are set up to and from the endpoints. With a GRE tunnel configured as a possible path for the service, the load balancer has the option of choosing the tunnel as the packet’s next hop.
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