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Border reboot: Difference between revisions
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Note: Throughout this guide <ipv4> and <ipv6> are to be replaced by the correct IP's. | Note: Throughout this guide <ipv4> and <ipv6> are to be replaced by the correct IP's. If you don't know, you can press the 'tab' key (twice) on your keyboard after typing 'neighbors' to get shown the options. | ||
== | == Pre-flight checks == | ||
These checks are to be done on the | These checks are to be done on the '''OTHER''' border (So the border that will stay online), to ensure that when the border that's being rebooted is down the cluster won't lose network connectivity. The commands are to be invoked in `vtysh`. | ||
* Confirm our IPv4 block is announced over BGP with `show ip bgp neighbors <ipv4> advertised-routes` | * Confirm our IPv4 block is announced over BGP with `show ip bgp neighbors <ipv4> advertised-routes` | ||
* Confirm our IPv6 block is announced over BGP with `show bgp neighbors <ipv6> advertised-routes` | * Confirm our IPv6 block is announced over BGP with `show bgp neighbors <ipv6> advertised-routes` | ||
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* Confirm that the border received the ROUTED & LAN IPv6 routes from the router with `show ipv6 route` | * Confirm that the border received the ROUTED & LAN IPv6 routes from the router with `show ipv6 route` | ||
Set a maintenance period | These checks are to be done on the host you want to reboot | ||
* Set a maintenance period on Zabbix. | |||
* Post in the Zulip in the relevant topic (incident's topic / 'SRE - General' stream) that the border is going to be rebooted. | |||
== Disabling routing through a border == | == Disabling routing through a border == | ||
* First, perform the pre-flight checks on the '''OTHER''' border. | |||
* Second, set a maintenance period on Zabbix for the border that's being rebooted. | |||
Third, on a border in `vtysh`, update the running configuration by invoking the following: | |||
* config | * config | ||
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* router ospf6 | * router ospf6 | ||
* no default-information originate | * no default-information originate | ||
* exit | |||
* exit | * exit | ||
* exit | * exit | ||