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Signed-off-by: Matej Feder <matej.feder@dnation.cloud>
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| # SONiC GNS3 testbed - unified FRR configuration | ||
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| This tutorial walks you through setting up and configuring a testbed environment in the GNS3 simulation platform. | ||
| The setup includes just two SONiC switches (SW1, SW2) with community images and two PCs connected to them. | ||
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| The guide also covers an unnumbered BGP L3 underlay configuration using unified FRR and BGP unnumbered. | ||
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| ## Prerequisites | ||
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| * GNS3 | ||
| * Select the installer for your favourite OS: https://www.gns3.com/software/download | ||
| * SONiC GNS3 appliance | ||
| * Follow instructions [here](../general.md#gns3-simulation-environment) | ||
| * The tutorial is intended to use SONiC community images. It was tested with community image SONiC master build 656617 | ||
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| ## SONiC GNS3 configuration | ||
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| * Drag and drop the SONiC switches and PCs, and wire them as shown in the architecture diagram | ||
| * Remove arbitrary config defaults | ||
| * The SONiC community image includes a default configuration that enables various ports and assigns arbitrary IP addresses | ||
| to them. Replace this configuration with another default setting that avoids arbitrary configurations. | ||
| For this purpose, we can use a predefined config template: | ||
| ```bash | ||
| sudo su - | ||
| sonic-cfggen -H --preset l3 -k Force10-S6000 > /etc/sonic/config_db.json | ||
| config reload -y | ||
| ``` | ||
| * Configure switches | ||
| * Find the FRR unified config files `configs/sw1_frr_unified.json`, `configs/sw1_frr_unified.json`, and apply them as follows: | ||
| ```bash | ||
| # copy <sonic-sw>_frr_unified.json file to the switch | ||
| sudo config load <sonic-sw>_frr_unified.json -y | ||
| docker restart bgp | ||
| # if you want to make the config persistent save it to the /etc/sonic.config_db.json | ||
| sudo config save -y | ||
| ``` | ||
| * Configure PC1 and PC2 | ||
| * Configure PC's IP address and proper gateway | ||
| ```text | ||
| PC1> ip 192.168.100.100/24 192.168.100.1 | ||
| PC2> ip 192.168.200.100/24 192.168.200.1 | ||
| ``` | ||
| ## Validate the testbed | ||
| * Validate the interfaces' setup | ||
| * Connect to, for example, the switch 1 console (the default credential for login is admin/YourPaSsWoRd) and verify | ||
| the IPv6 link local mode is enabled for Ethernet4 (due to BGP unnumbered, for details read e.g. [this](https://support.edge-core.com/hc/en-us/articles/900002377366--Enterprise-SONiC-BGP-Unnumbered)) | ||
| ```yaml | ||
| $ show ipv6 link-local-mode | grep Enabled | ||
| | Ethernet4 | Enabled | | ||
| ``` | ||
| * Validate whether you see UP/UP state of connected interfaces via e.g. `$ show int status` | ||
| * Explore interfaces configuration via `show runningconfiguration interfaces` or via `sudo cat /etc/sonic/config_db.json` | ||
| * Validate the BGP configuration | ||
| * Connect to, for example, the Spine switch and verify the routes propagated by the BGP protocol | ||
| ```bash | ||
| $ show ip route | ||
| Codes: K - kernel route, C - connected, S - static, R - RIP, | ||
| O - OSPF, I - IS-IS, B - BGP, E - EIGRP, N - NHRP, | ||
| T - Table, v - VNC, V - VNC-Direct, A - Babel, D - SHARP, | ||
| F - PBR, f - OpenFabric, | ||
| > - selected route, * - FIB route, q - queued route, r - rejected route | ||
| C>*10.0.0.1/32 is directly connected, Loopback0, 03:02:15 | ||
| B>*10.0.0.2/32 [20/0] via fe80::2047:61ff:feb2:b715, Ethernet4, 03:01:59 | ||
| C>*10.1.0.1/32 is directly connected, Loopback0, 03:02:15 | ||
| C>*192.168.100.0/24 is directly connected, Ethernet8, 03:02:15 | ||
| B>*192.168.200.0/24 [20/0] via fe80::2047:61ff:feb2:b715, Ethernet4, 03:01:59 | ||
| ``` | ||
| * Explore BGP configuration via `show runningconfiguration bgp` | ||
| * Open console of the PC1 or PC2 and try to `ping` the whole infrastructure | ||
| * SONiC switches should be reachable e.g. via its Loopback IPs and PC1 via 192.168.100.100 and PC2 via IP 192.168.200.100 |
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| { | ||
| "DEVICE_METADATA": { | ||
| "localhost": { | ||
| "docker_routing_config_mode": "unified", | ||
| "frr_mgmt_framework_config": "true", | ||
| "hostname": "sw1", | ||
| "mac": "0c:2e:02:80:00:01" | ||
| } | ||
| }, | ||
| "INTERFACE": { | ||
| "Ethernet4": { | ||
| "ipv6_use_link_local_only": "enable" | ||
| }, | ||
| "Ethernet8": {}, | ||
| "Ethernet8|192.168.100.1/24": {} | ||
| }, | ||
| "LOOPBACK_INTERFACE": { | ||
| "Loopback0": {}, | ||
| "Loopback0|10.0.0.1/32": {}, | ||
| "Loopback0|fd0c:cc24:75a0:1::1/128": {} | ||
| }, | ||
| "BGP_GLOBALS": { | ||
| "default": { | ||
| "local_asn": "65001", | ||
| "log_nbr_state_changes": "true", | ||
| "router_id": "10.0.0.1" | ||
| } | ||
| }, | ||
| "BGP_PEER_GROUP": { | ||
| "default|core": { | ||
| "peer_group_name": "core", | ||
| "admin_status": "true", | ||
| "asn": "external", | ||
| "peer_type": "external" | ||
| } | ||
| }, | ||
| "BGP_NEIGHBOR": { | ||
| "default|Ethernet4": { | ||
| "peer_group_name": "core" | ||
| } | ||
| }, | ||
| "BGP_NEIGHBOR_AF": { | ||
| "default|core|ipv4_unicast": { | ||
| "admin_status": "true", | ||
| "route_map_in": [ | ||
| "ALLOW" | ||
| ], | ||
| "route_map_out": [ | ||
| "ALLOW" | ||
| ] | ||
| }, | ||
| "default|core|ipv6_unicast": { | ||
| "admin_status": "true", | ||
| "route_map_in": [ | ||
| "ALLOW" | ||
| ], | ||
| "route_map_out": [ | ||
| "ALLOW" | ||
| ] | ||
| } | ||
| }, | ||
| "ROUTE_MAP": { | ||
| "ALLOW|1": { | ||
| "route_operation": "permit" | ||
| } | ||
| }, | ||
| "ROUTE_REDISTRIBUTE": { | ||
| "default|connected|bgp|ipv4": {} | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
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| { | ||
| "DEVICE_METADATA": { | ||
| "localhost": { | ||
| "docker_routing_config_mode": "unified", | ||
| "frr_mgmt_framework_config": "true", | ||
| "hostname": "sw2", | ||
| "mac": "0c:2e:02:80:00:02" | ||
| } | ||
| }, | ||
| "INTERFACE": { | ||
| "Ethernet4": { | ||
| "ipv6_use_link_local_only": "enable" | ||
| }, | ||
| "Ethernet8": {}, | ||
| "Ethernet8|192.168.200.1/24": {} | ||
| }, | ||
| "LOOPBACK_INTERFACE": { | ||
| "Loopback0": {}, | ||
| "Loopback0|10.0.0.2/32": {}, | ||
| "Loopback0|fd0c:cc24:75a0:1::2/128": {} | ||
| }, | ||
| "BGP_GLOBALS": { | ||
| "default": { | ||
| "local_asn": "65002", | ||
| "log_nbr_state_changes": "true", | ||
| "router_id": "10.0.0.2" | ||
| } | ||
| }, | ||
| "BGP_PEER_GROUP": { | ||
| "default|core": { | ||
| "peer_group_name": "core", | ||
| "admin_status": "true", | ||
| "asn": "external", | ||
| "peer_type": "external" | ||
| } | ||
| }, | ||
| "BGP_NEIGHBOR": { | ||
| "default|Ethernet4": { | ||
| "peer_group_name": "core" | ||
| } | ||
| }, | ||
| "BGP_NEIGHBOR_AF": { | ||
| "default|core|ipv4_unicast": { | ||
| "admin_status": "true", | ||
| "route_map_in": [ | ||
| "ALLOW" | ||
| ], | ||
| "route_map_out": [ | ||
| "ALLOW" | ||
| ] | ||
| }, | ||
| "default|core|ipv6_unicast": { | ||
| "admin_status": "true", | ||
| "route_map_in": [ | ||
| "ALLOW" | ||
| ], | ||
| "route_map_out": [ | ||
| "ALLOW" | ||
| ] | ||
| } | ||
| }, | ||
| "ROUTE_MAP": { | ||
| "ALLOW|1": { | ||
| "route_operation": "permit" | ||
| } | ||
| }, | ||
| "ROUTE_REDISTRIBUTE": { | ||
| "default|connected|bgp|ipv4": {} | ||
| } | ||
| } |
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