Tag: cloud networking

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Scaling Up/Scaling Down HPE Gateways

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High Performance Encryption (HPE) is an Aviatrix technology that enables 10 Gbps and higher IPsec performance between two single Aviatrix Gateway instances or between a single Aviatrix Gateway instance and on-prem Aviatrix appliance. You can change Gateway Size if needed to change gateway throughput. The gateway will restart with a different instance size. IP addresses per network interface The following tables list the maximum number of network interfaces per instance type, and the maximum number of private IPv4 addresses and IPv6 addresses per network interface: Constraints Initial Scenario Scale Up I’m going to scale to a c5n.9xlarge: Tunnels are created … Continue reading Scaling Up/Scaling Down HPE Gateways

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Scaling Out Secure Dedicated Ingress on GCP

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Proposed Architecture The architecture presented below satisfies GCP customers requirements to use third party compute instance based appliances in their flows. The design considers HTTP(S) load balancers due its advanced capabilities. Constraints GCP Load Balancers Decision Chart Update DNS How to Scale Scenario 1 How to Scale Scenario 2 How to Scale Scenario 3 How to Scale Scenario 4 The HC as before is the same as we are checking the health of the compute instances: References https://research.google/pubs/pub44824/ https://cloud.google.com/load-balancing/docs/load-balancing-overview https://cloud.google.com/load-balancing/docs/backend-service Continue reading Scaling Out Secure Dedicated Ingress on GCP

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Aviatrix: Minimum Alerts Recommended

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Mem Available (<= 20%) CPU Idle (<= 20%) HDisk Free (<= 20%) Gateway Status Connection Status BGP Peering Status PPS Limit Exceeded Rate (rate_pps_limit_exceeded) (>= 75) Bandwidth Egress Limit Exceeded Rate (rate_bandwidth_egress_limit_exceeded) (>= 40) Bandwidth Ingress Limit Exceeded Rate (rate_bandwidth_ingress_limit_exceeded) (>= 40) Errored Packets Transmitted Rate (rate_tx_errs) (>= 40) Errored Packets Received Rate (rate_rx_errs) (>= 40) Rate of Packets Dropped While Receiving (rate_rx_drop) (>= 40) Rate of Packets Dropped While Transmitting (rate_tx_drop) (>= 40) Conntrack Limit Exceeded Rate (rate_conntrack_limit_exceeded) (>= 40) Underlay Connection Status Tunnel Count References https://read.docs.aviatrix.com/HowTos/Monitoring_Your_Network.html https://docs.aviatrix.com/copilot/latest/monitoring-troubleshooting/user-alerts-network.html Continue reading Aviatrix: Minimum Alerts Recommended

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Checking Bandwidth Consumption with Athena

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VPC flow logs capture information about the IP traffic going to and from network interfaces in a VPC. Athena is an interactive query service that makes it easy to analyze data directly in S3 using standard SQL. Topology Create a (S3) Bucket Enable (VPC) Flow Logs Apache Parquet is a columnar data format that stores and queries data more efficiently and cost-effectively than a text format. Queries on data stored in Parquet format are 10 to 100 times faster and cheaper than data stored in text format. Flow logs delivered in Parquet format with Gzip compression use about 20 percent … Continue reading Checking Bandwidth Consumption with Athena

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Dedicated Ingress VPC Health Checks

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Topology (VPC003) Workload Configuration Instance Group: Health check: Network Load Balancer: (VPC001) Ingress VPC SNAT/DNAT using single NAT: Another option is to use customized NAT: Instance Group: Health Check: External Global HTTP(S) Load Balancer: Testing Packet capture from the proxy instance: Troubleshooting Health check failures: “End-to-End” Health Check In this scenario, the external load balancer health check probes the the internal load balancer: New HC on port 80 (service port): References https://cloud.google.com/load-balancing/docs/health-check-concepts Continue reading Dedicated Ingress VPC Health Checks

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Migrating from GCP… to GCP

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Current and Future Architecture Current state: Desired state: vpc001 is composed of the following subnets: vpc001 routing table (filtering routes of interest): On-prem (AS 36180) routing table: Staging On-prem route table after staging is complete (avx gateway is not attached): Attaching the gateway: And advertise the vpc001 subnets with a better metric (please note that RFC 6598 prefixes are not advertised from AVX by default): To avoid traffic switching over to AVX asymmetrically during the staging we have a few options: Switching traffic over (East-West) vpc001 destination routes to vpc002: When Cloud Routers learn a prefix that exactly matches the … Continue reading Migrating from GCP… to GCP

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GCP Routing Without Subtitles

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Topology 1 Metric 100 comes from: Topology 2 Topology 3 CSR: Subnetworks 10.11.64-66 are on us-east1. Adding a new subnet to vpc001 but located in us-central1: 100.64.0.0/24 is advertised from central gateway. Topology 4 Default Config: Import/Export: Topology 5 CSR1000v RIB: Using the same AS vpc001 and vpc002 does not exchange routes. If we change vpc002 CR to a different AS (64515): Topology 6 Topology 7 Topology 8 References https://cloud.google.com/vpc/docs/using-routes#gcloud https://cloud.google.com/network-connectivity/docs/router/support/troubleshooting https://developer.hashicorp.com/terraform/tutorials/kubernetes/gke?in=terraform%2Fkubernetes&utm_offer=ARTICLE_PAGE https://cloud.google.com/vpc/docs/routes Continue reading GCP Routing Without Subtitles

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Using GitHub Actions to deploy Aviatrix

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Automating Terraform with CI/CD enforces configuration best practices, promotes collaboration and automates the Terraform workflow. GitHub Actions Prime Actions An action is a custom application for the GitHub Actions platform that performs a repeated task. GitHub Actions is composed by: Workflow Workflows are defined by a YAML in a repository and will run when triggered by an event or manually. A workflow contains one or more jobs which can run in sequential order or in parallel. Jobs A job is a set of steps in a workflow that execute on the same runner. Each step is either a shell script … Continue reading Using GitHub Actions to deploy Aviatrix

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Aviatrix Notification using WebHooks

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Aviatrix CoPilot CoPilot leverages the intelligence, advanced network, and security services delivered by Aviatrix’s multi-cloud network platform to provide enterprise cloud network operations teams both familiar day-two operational features such as packet capture, trace route and ping and new operational capabilities specifically built for multi-cloud network environments. The following previous blog post provides more details: The following previous posts go into details on how to deploy Aviatrix: Avitrix CoPilot Notifications is where alerts can be configured so that you can be notified about changes in your Aviatrix transit network. The alerts can be based on common telemetry data monitored in … Continue reading Aviatrix Notification using WebHooks

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Site-2-Cloud connectivity with FortiGate and Aviatrix

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The diagram below shows the environment I’m going to test: Active-Standby This option supports connecting AVX transit gateways to on-prem with only one active tunnel and the other one as backup. The use case is a deployment scenario where on-prem device such as firewall does not support asymmetric routing on two tunnels. Aviatrix configuration: The active/standby configuration will produce the following configuration: FortiGate config To align the FortiGate configuration to the AVX gateways, we need to use BGP Weight attribute to prefer a route received from the AVX primary transit gateway GRE tunnel over the AVX transit gateway ha GRE … Continue reading Site-2-Cloud connectivity with FortiGate and Aviatrix