How to configure Arista switches » History » Version 13
Nico Schottelius, 05/21/2020 05:02 PM
| 1 | 1 | Nico Schottelius | h1. How to configure Arista switches |
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| 3 | 3 | Nico Schottelius | {{toc}} |
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| 5 | h2. Saving your changes |
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| 7 | If you don't enter write at the end, everything is lost after reboot. |
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| 8 | |||
| 9 | <pre> |
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| 10 | write |
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| 11 | </pre> |
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| 12 | |||
| 13 | 1 | Nico Schottelius | h2. Entering conf mode |
| 14 | |||
| 15 | <pre> |
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| 16 | enable |
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| 17 | conf |
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| 18 | </pre> |
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| 19 | |||
| 20 | h2. Setting password |
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| 21 | |||
| 22 | <pre> |
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| 23 | username admin secret <passwordhere> |
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| 24 | </pre> |
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| 25 | |||
| 26 | h2. Setting name |
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| 27 | |||
| 28 | <pre> |
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| 29 | hostname <NAME> |
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| 30 | </pre> |
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| 31 | |||
| 32 | 13 | Nico Schottelius | By default set it to *switch-placeX*. While the placeX part is indeed redundant, it is necessary to be able to distinguish switch1.place5 and switch1.place6. |
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| 35 | 1 | Nico Schottelius | h2. Creating a VLAN |
| 36 | |||
| 37 | <pre> |
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| 38 | vlan <ID-OF-VLAN> |
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| 39 | name <NAME-OF-VLAN> |
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| 40 | </pre> |
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| 41 | |||
| 42 | 2 | Nico Schottelius | h2. Putting a port into a untagged vlan |
| 43 | 1 | Nico Schottelius | |
| 44 | 2 | Nico Schottelius | <pre> |
| 45 | interface EthernetXX |
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| 46 | switchport access vlan YY |
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| 47 | </pre> |
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| 48 | |||
| 49 | 1 | Nico Schottelius | h2. Creating a port channel (= LACP = bonding) |
| 50 | 2 | Nico Schottelius | |
| 51 | * go to the interface that you want to be in the port-channel |
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| 52 | * configure it |
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| 53 | |||
| 54 | <pre> |
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| 55 | interface EthernetXX |
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| 56 | channel-group XX mode active |
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| 57 | </pre> |
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| 58 | 4 | Nico Schottelius | |
| 59 | 10 | Nico Schottelius | h2. Creating a port channel over multiple switches using MLAG |
| 60 | |||
| 61 | <pre> |
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| 62 | interface EthernetXX |
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| 63 | channel-group XX mode active |
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| 64 | 12 | ll nu | interface port-channel XX |
| 65 | 10 | Nico Schottelius | mlag XX |
| 66 | 11 | ll nu | |
| 67 | 10 | Nico Schottelius | </pre> |
| 68 | |||
| 69 | And if you want to have tagged/trunk port: |
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| 70 | |||
| 71 | <pre> |
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| 72 | switchport mode trunk |
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| 73 | </pre> |
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| 74 | |||
| 75 | 4 | Nico Schottelius | h2. Upgrading a switch |
| 76 | |||
| 77 | * copy the image from usb to flash |
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| 78 | 1 | Nico Schottelius | * change the boot config |
| 79 | 5 | Nico Schottelius | * don't forget to write |
| 80 | 4 | Nico Schottelius | * reload |
| 81 | |||
| 82 | <pre> |
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| 83 | copy usb1:/EOS-4.14.4.swi flash:/EOS-4.14.4.swi |
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| 84 | configure terminal |
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| 85 | boot system flash:/EOS-4.14.4.swi |
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| 86 | show boot-config |
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| 87 | write |
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| 88 | reload |
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| 89 | </pre> |
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| 90 | 6 | Nico Schottelius | |
| 91 | h2. Configuring MLAG |
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| 92 | |||
| 93 | * Create a port channel for communication |
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| 94 | * Configure the mlag over it |
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| 95 | 7 | Nico Schottelius | * Assuming the switches are connected by ethernet 47 and ethernet 48 |
| 96 | * Assuming that the switches use vlan 13 |
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| 97 | * ZZ = ip suffix of the switch |
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| 98 | * WW = ip suffix of the other switch |
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| 99 | * mlagdomain = something local |
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| 100 | 6 | Nico Schottelius | |
| 101 | |||
| 102 | <pre> |
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| 103 | 7 | Nico Schottelius | interface ethernet 47 |
| 104 | channel-group 47 mode active |
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| 105 | |||
| 106 | interface ethernet 48 |
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| 107 | channel-group 47 mode active |
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| 108 | |||
| 109 | 9 | Nico Schottelius | interface Port-Channel47 |
| 110 | switchport mode trunk |
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| 111 | switchport trunk group mlag-aristas |
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| 112 | |||
| 113 | 7 | Nico Schottelius | vlan 13 |
| 114 | name mlag-aristas |
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| 115 | trunk group mlag-aristas |
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| 116 | |||
| 117 | interface Vlan13 |
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| 118 | no autostate |
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| 119 | ip address 10.3.4.ZZ/24 |
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| 120 | |||
| 121 | |||
| 122 | 1 | Nico Schottelius | mlag configuration |
| 123 | domain-id MLAGLOCALDOMAIN |
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| 124 | peer-address 10.3.4.WW |
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| 125 | 8 | Nico Schottelius | local-interface Vlan13 |
| 126 | 1 | Nico Schottelius | peer-link Port-Channel47 |
| 127 | 8 | Nico Schottelius | |
| 128 | 6 | Nico Schottelius | |
| 129 | </pre> |
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| 130 | |||
| 131 | h2. Configuring BGP |
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| 132 | |||
| 133 | * XX = ip suffix |
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| 134 | |||
| 135 | <pre> |
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| 136 | router bgp 209898 |
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| 137 | router-id 0.0.0.XX |
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| 138 | bgp default ipv6-unicast |
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| 139 | maximum-paths 4 |
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| 140 | bgp listen range 2a0a:e5c0:1:8::/64 peer-group ungleich remote-as 209898 |
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| 141 | neighbor ungleich peer-group |
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| 142 | neighbor ungleich maximum-routes 12000 |
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| 143 | 1 | Nico Schottelius | </pre> |