07-31-2020 08:39 AM
We have two leaf and spines and 3 controllers in our setup, currently we have configured static routes on L3-out and Leaf switches are connected with two L3 devices, one is with WAN Router and once is with Firewall. However we are using only one L3-out to route to point either side and both side hosts are able to connect.
Now we are planning to implement EIGRP in our ACI setup and will remove static. So do we need to configure two L3 out for EIGRP and attach onto two L3 devices connected interfaces or we can attach the same L3 out on both interfaces. Have attached diagram for reference.
Appreciate your advise on this
Thank You
07-31-2020 11:13 AM
Hi,
ACI Fabric L3Out
Limitations and guidelines
● EIGRP (IPv4) has been supported since APIC Release 1.1(1).
● EIGRP (IPv6) has been supported since APIC Release 1.2(2).
● Only one EIGRP L3Out can be deployed on a border leaf per VRF. This is because one EIGRP L3Out represents one EIGRP AS.
07-31-2020 11:25 AM
As per Cisco, Only one EIGRP L3 out per leaf switch - irrespective of number of L3 devices.
The L3Out object defines the protocol and some protocol parameters that will be used by all nodes and interfaces configured under the L3Out.
For OSPF L3Outs, the OSPF area is defined at the L3Out level. If an OSPF L3Out will connect to multiple external devices on the same border leaf, one L3Out should be configured.
Similarly, the EIGRP AS is configured at the L3Out level. If connecting to multiple EIGRP devices in the same AS from the same leaf, one L3Out should be used.
A different L3Out must be used when connecting to OSPF neighbors in different areas or when connecting to EIGRP neighbors in different AS.
For BGP L3Outs the peer-connectivity profile is configured under the node (for peering to loopback addresses) or under the physical interface (for direct connection peering). Multiple BGP peers can be defined under the same L3Out.
08-04-2020 10:58 AM
@NAGA1 Appreciate your quick response. it was very helpful.
Will ACI negotiate as two neighborship with adjacent devices as we have two leaf switches or adjacent device will see only one neighbor.
Thank You.!!
08-01-2020 11:54 PM
08-04-2020 11:01 AM
@tuanquangnguyen Yes, will use ACI as transit device.
Thank You.!!
08-07-2020 01:24 AM
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