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Looking into EVPN and the route types (type 2 and 5) is my understanding correct. In terms of their placement into the relevant forward tables upon the device.

EVPN Route Type 2: MAC/IP Advertisement Placed into the mac forwarding table.

EVPN Route Type 5: IP Prefix Route Are placed into the RIB

With both route types also being placed into the VTEP tables. Is this understanding correct?

Thanks,

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Yes, your understanding is correct.

You need route type 2 messages to fill your ARP tables since there's no traditional broadcast domain anymore. You can find more details on type 2 messages in RFC7432.

Type 5 routes are used, as you assumed, to fill routing tables, as described in draft-ietf-bess-evpn-prefix-advertisement, which also explains some of the use cases for this route type.

There's a nice article on bgphelp.com about all the BGP EVPN route types.

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  • It does not contain tables. It contains IP/MAC combinations which can be used to fill forwarding tables.
    – Teun Vink
    Jan 29 '19 at 9:13
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I am quoting from the book ' MPLS in the SDN Era'.

When IRB is configured in an EVPN , there are two EVPN Type 2 routes:

• A good old MAC Advertisement route, which just the IRB’s MAC in the NLRI.
• A juicier MAC/IP Advertisement route (also Type 2), which contains both the IRB’s MAC and IPv4 address in the NLRI.

So from this perspective , the EVPN Type 2 routes contain IRB IPs as well IRB MAC Addresses (MAC + IP). This is in addition to simple MAC Addresses that are learned via MBGP.

In my openion , EVPN Type 5 routes are pure Layer 3 IP Addresses that are advertised just like L3VPN case.

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  • Thanks it was more confirmation about their placements within the necessary tables...
    – RickD
    Jan 23 '19 at 12:55

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