Dell Networking SONiC How to use IP address in a VRF in MCLAG Keepalive link (source-ip and peer-ip)
Summary: This article explains about how to use IP address in a VRF in MCLAG Keepalive link (source-ip and peer-ip) in Dell Networking SONiC.
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Instructions
Prerequisites We are using standard interface naming to demonstrate the Concepts. See the article Dell Networking S-Series: Basic Interface Configuration – SONIC 4.0 for more information regarding interface naming. |
MCLAG Peer link synchronizes the Peer state and is used to carry a heartbeat between two peers. We can use IP address assigned to the VLAN, interface, the Management interface for this purpose.
From Dell SONiC 4.2 version we can use IP address in non-default VRF.
NOTE:
| - Ensure that the Peer-IP is reachable for the source-ip when configuring as a Keepalive link. Use the ping command to verify connectivity. - For Default VRF, do not use command session-vrf. - We can use IP address assigned in Vlan or Layer 3 interface for Keepalive Link - While using Vlan as the Keepalive Link ensure to use mclag-separate-ip in the configuration. Refer When "mclag-separate-ip" Should be Used in Dell Networking Enterprise SONiC OS MF-CLI for more details. Sample configuration
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Configuration Syntax
| Configuration | Explanation |
|---|---|
admin@ DELLSONiC:~$ sonic-cli |
Log in to Dell MF-CLI |
DELLSONiC# configure |
Enter configuration mode. |
DELLSONiC(config)# mclag domain <Domain ID> |
Define the MCLAG domain ID. 1-4095 |
DELLSONiC(config-mclag-domain-1)# peer-ip <IP address> |
Configure Peer IP for keepalive |
DELLSONiC(config-mclag-domain-1)# source-ip <IP address> |
Configure Source IP for keepalive |
DELLSONiC(config-mclag-domain-1)# session-vrf <VRF-NAME> |
(Optional) For default VRF this configuration is not required. |
DELLSONiC(config-mclag-domain-1)# session-vrf mgmt |
(Optional) Use this command if we are using mgmt. VRF. |
Sample Configuration
Goal: Lets configure Keepalive link in an MCLAG Peer Switch 2. The Out Of Band Management port is configured in mgmt VRF with IP 192.168.1.2. The Peer IP is 192.168.1.1.
Consider the Management Port (Out of Band) is in vrf mgmt and we use this as our Keepalive link.
DELLSONiC# show ip vrf VRF-NAME INTERFACES ---------------------------------------------------------------- default mgmt Management0 |
Lets assign session-vrf as mgmt in mclag domain.
admin@DELLSONiC:~$ sonic-cli DELLSONiC# configure DELLSONiC(config)# mclag domain 1 DELLSONiC(config-mclag-domain-1)# source-ip 192.168.1.2 DELLSONiC(config-mclag-domain-1)# peer-ip 192.168.1.1 DELLSONiC(config-mclag-domain-1)# session-vrf mgmt DELLSONiC(config-mclag-domain-1)# exit DELLSONiC(config)# exit DELLSONiC# |
Lets do a ping test to ensure we have connectivity between source-ip 192.168.1.2 and peer-ip 192.168.1.1 in vrf mgmt.
DELLSONiC# ping vrf mgmt 192.168.1.1 -I 192.168.1.2 sudo: unable to resolve host DELLSONiC: Temporary failure in name resolution PING 192.168.1.1 (192.168.1.1) from 192.168.1.2 : 56(84) bytes of data. 64 bytes from 192.168.1.1: icmp_seq=1 ttl=64 time=4.73 ms 64 bytes from 192.168.1.1: icmp_seq=2 ttl=64 time=1.13 ms 64 bytes from 192.168.1.1: icmp_seq=3 ttl=64 time=0.846 ms 64 bytes from 192.168.1.1: icmp_seq=4 ttl=64 time=4.71 ms 64 bytes from 192.168.1.1: icmp_seq=5 ttl=64 time=4.75 ms 64 bytes from 192.168.1.1: icmp_seq=6 ttl=64 time=1.03 ms ^C --- 192.168.1.1 ping statistics --- 6 packets transmitted, 6 received, 0% packet loss, time 5023ms rtt min/avg/max/mdev = 0.846/2.867/4.746/1.865 ms |
Lets verify the session status. Use command show mclag brief below.
DELLSONiC# show mclag brief Domain ID : 1 Role : standby Session Status : up ======>We can see keepalive session is up Peer Link Status : up Source Address : 192.168.1.2 Peer Address : 192.168.1.1 Session Vrf : mgmt ======>The Keepalive session use mgmt vrf Peer Link : Eth1/1 Keepalive Interval : 1 secs Session Timeout : 30 secs Delay Restore : 300 secs System Mac : 0c:de:4c:81:00:0a Mclag System Mac : Number of MLAG Interfaces:1 ----------------------------------------------------------- MLAG Interface Local/Remote Status ----------------------------------------------------------- PortChannel1 up/up DELLSONiC# |
Affected Products
PowerSwitch E3200-ON Series, Dell EMC Networking N3200-ON, PowerSwitch S5212F-ON, PowerSwitch S5224F-ON, PowerSwitch S5232F-ON, PowerSwitch S5248F-ON, PowerSwitch S5296F-ON, PowerSwitch Z9100-ON, PowerSwitch Z9264F-ON, PowerSwitch Z9332F-ON
, PowerSwitch Z9432F-ON
...
Article Properties
Article Number: 000222932
Article Type: How To
Last Modified: 11 Mar 2024
Version: 2
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