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EBGP Utilities

The ebgp.utils plugin (contributed by Stefano Sasso) implements several EBGP nerd knobs, including: allowas_in, as_override, default_originate and MD5 password:

  • bgp.allowas_in is an interface (node-to-link attachment) attribute that takes an integer value between 1 and 10. A true value sets it to 1.

  • bgp.as_override is an interface (node-to-link attachment) boolean attribute.

  • bgp.default_originate is an interface (node-to-link attachment) attribute (True/False/always).

  • bgp.password is a link-level string attribute.

The plugin includes Jinja2 templates for Cisco IOS, Arista EOS and VyOS.

Operating system allowas_in as_override password default_originate
Arista EOS ✅ ✅ ✅ ✅
Cisco IOS ✅ ✅ ✅ ✅
Juniper vMX ❌ ✅ ✅ ❌
Juniper vSRX 3.0 ❌ ✅ ✅ ❌
Mikrotik RouterOS 7 ✅ ✅ ✅ ✅
VyOS ✅ ✅ ✅ ✅

NOTES:

  • VyOS always originates a defaults when default_originate is set. Arista EOS originates a default only if present in the routing table, unless always is specified.

Test Topology

---
defaults:
  device: eos

module: [ bgp, vrf ]
plugin: [ ebgp.utils ]

vrfs:
  red:
  blue:

nodes:
  y1:
    bgp.as: 65001
  y2:
    bgp.as: 65002

links:
- y1:
    bgp.default_originate: True
  y2:
  bgp.password: TestPassword
- y1:
    vrf: red
  y2:
    vrf: red
    bgp.allowas_in: True
    bgp.default_originate: always
- y1:
    vrf: blue
  y2:
    vrf: blue
    bgp.as_override: True