This section explains the configuration of dedicated interfaces for ASM communication on a new SE and an existing SE.
Configuring Dedicated Interfaces for ASM Communication on a New Avi Load Balancer Service Engines
The dedicated sideband interfaces on SEs use the following YAML configuration parameters:
avi.asm-ip.SE
avi.asm-static-routes.SE
avi.asm-vnic-id.SE
For new SEs, these parameters can be provided in the day-zero YAML file.
YAML Parameter |
Description |
Format |
Example |
|---|---|---|---|
avi.asm-ip.SE |
This is the IP address of the dedicated sideband interface on the SE (this is NOT the self IP or virtual service IP of the ASM device). |
IP-address/subnet-mask |
avi.asm-ip.SE: 10.160.103.227/24 |
avi.asm-static-routes.SE |
These are comma-separated, static routes to reach the sideband ASM virtual service IP. Even /32 routes can be provided. The gateway will be the self IP of the ASM device. Note: If there is a single static route, provide the same and ensure the square brackets are matched. Also, if the ASM virtual service IPs are in the same subnet as the dedicated interfaces, provide the gateway as the default gateway for the subnet. |
[asm-vip-network1/mask1 via gateway1, asm-vip-network2/mask2 via gateway2] or [asm-vip-network1/mask1 via gateway1] |
avi.asm-static-routes.SE: [169.254.1.0/24 via 10.160.102.1, 169.254.2.0/24 via 10.160.102.2] |
avi.asm-vnic-id.SE |
ID of the dedicated ASM vNIC and is typically 3 on CSP (vNIC0 is management interface, vNIC1 is data-in interface, and vNIC2 is data-out interface) |
numeric vNIC ID |
avi.asm-vnic-id.SE: '3' |
Instructions
A sample SE YAML file for the day-zero configuration on the CSP will be as follows:
bash# cat avi_meta_data_dedicated_asm_SE.yml avi.mgmt-ip.SE: "10.128.2.18" avi.mgmt-mask.SE: "255.255.255.0" avi.default-gw.SE: "10.128.2.1" AVICNTRL: "10.10.22.50" AVICNTRL_AUTHTOKEN: “febab55d-995a-4523-8492-f798520d4515” avi.asm-vnic-id.SE: ‘3' avi.asm-static-routes.SE: [169.254.1.0/24 via 10.160.102.1, 169.254.2.0/24 via 10.160.102.2] avi.asm-ip.SE: 10.160.102.227/24
Once the SE is created with this day-zero configuration and appropriate virtual NIC interfaces are added to the SE service instance on CSP, verify that the dedicated vNIC configuration is applied successfully and the ASM virtual service IPs are reachable via this interface. In this case, the interface eth3 is dedicated sideband ASM interface and it is configured with IP 10.160.102.227/24.
bash# ssh admin@<SE-MGMT-IP>
bash# ifconfig eth3
eth3 Link encap:Ethernet HWaddr 02:6a:80:02:11:05
inet addr:10.160.102.227 Bcast:10.160.102.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:4454601 errors:0 dropped:1987 overruns:0 frame:0
TX packets:4510346 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:672683711 (672.6 MB) TX bytes:875329395 (875.3 MB)
bash# ip route
default via 10.128.2.1 dev eth0
10.128.2.0/24 dev eth0 proto kernel scope link src 10.128.2.27
10.160.102.0/24 dev eth4 proto kernel scope link src 10.160.102.227
169.254.1.0/24 via 10.160.102.1 dev eth3
169.254.2.0/24 via 10.160.102.2 dev eth3
bash# ping -I eth3 <ASM-VIP>
ping -I eth3 169.254.1.10
PING 169.254.1.10 (169.254.1.10) from 10.160.102.227 eth3: 56(84) bytes of data.
64 bytes from 169.254.1.10: icmp_seq=1 ttl=62 time=0.229 ms
Configuring Dedicated Interfaces for ASM Communication on an Existing Avi Load Balancer Service Engine
The dedicated sideband interfaces on SEs use the following configuration parameters:
avi.asm-ip.SE
avi.hsm-static-routes.SE
avi.asm-vnic-id.SE
For the existing SEs, these parameters can be populated in the /etc/ovf_config file.
All parameters in this file are comma-separated and the file format is slightly different from the YML file used for spinning up new SEs. However, the parameters and their respective formats are exactly the same as they are for new SEs.
YAML Parameter |
Description |
Format |
Example |
|---|---|---|---|
avi.asm-ip.SE |
IP address of the dedicated ASM vNIC on the SE (this is NOT the IP address of the ASM) |
IP-address/subnet-mask |
avi.asm-ip.SE: 10.160.103.227/24 |
avi.hsm-static-routes.SE |
These are comma-separated, static routes to reach the sideband ASM virtual service IPs. Even /32 routes can be provided. The gateway will be the self IP of the ASM device. Note: If there is a single static route, provide the same and ensure the square brackets are matched. Also, if the ASM virtual service IPs are in the same subnet as the dedicated interfaces, provide the gateway as the default gateway for the subnet. |
[asm-vip-network1/mask1 via gateway1, asm-vip-network2/mask2 via gateway2] or [asm-vip-network1/mask1 via gateway1] |
avi.asm-static-routes.SE: [169.254.1.0/24 via 10.160.102.1, 169.254.2.0/24 via 10.160.102.2] |
avi.asm-vnic-id.SE |
ID of the dedicated ASM vNIC and is typically 3 on CSP (vNIC0 is management interface, vNIC1 is data-in interface, and vNIC2 is data-out interface) |
numeric vNIC ID |
avi.asm-vnic-id.SE: '3' |
Instructions for Configuring CSP
To add a dedicated ASM vNIC on an existing SE CSP service, perform the following steps:
In the sample configuration below, vNIC3, which is the fourth NIC on the CSP service, is used.
Navigate to to power off the SE service on Cisco CSP.
To add a new vNIC to the SE with desired parameters, navigate to . Provide VLAN ID, VLAN type, VLAN tagged, Network Name, Model, etc., and click on Submit button.
To power on the SE service on CSP, navigate to .
Instructions for Configuring Avi Load Balancer Service Engine
SSH to the SE IP and perform the following steps:
ssh admin@<SE-MGMT-IP> bash# bash# sudo su bash# /opt/avi/scripts/stop_se.sh bash# mv /var/run/avi/ovf_properties.saved /home/admin
Do not copy this file; move it instead. Edit it to provide the three comma-separated ASM-dedicated NIC related parameters.
The sample file is as follows:
bash# cat /home/admin/ovf_properties.saved AVICNTRL: 10.128.2.18, AVICNTRL_AUTHTOKEN: 1403771c- fc59-4d76-89b2-b3c35682b342, avi.default-gw.SE: 10.128.2.1, avi.asm-ip.SE: 10.160.102.227/24, avi.asm-static-routes.SE: [169.254.1.0/24 via 10.160.102.1, 169.254.2.0/24 via 10.160.102.2], avi.asm-vnic-id.SE: '3', avi.mgmt-ip.SE: 10.128.2.27, ovf_source: CSP, uuid: FCE9B12D-A1B0-4EF3-B922-BDC2A5F8AA11} bash# cp /home/admin/ovf_properties.saved /etc/ovf_config bash# /opt/avi/scripts/start_se.sh
Verify that the dedicated vNIC information is applied correctly and the ASM virtual service IPs are reachable via this interface. In this case, the interface eth3 is the dedicated ASM interface and it is configured with IP 10.160.102.227/24.
bash# ssh admin@<SE-MGMT-IP>
bash# ifconfig eth3
eth3 Link encap:Ethernet HWaddr 02:6a:80:02:11:05
inet addr:10.160.102.227 Bcast:10.160.102.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:4454601 errors:0 dropped:1987 overruns:0 frame:0
TX packets:4510346 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:672683711 (672.6 MB) TX bytes:875329395 (875.3 MB)
bash# ip route
default via 10.128.2.1 dev eth0
10.128.2.0/24 dev eth0 proto kernel scope link src 10.128.2.27
10.160.102.0/24 dev eth4 proto kernel scope link src 10.160.102.227
169.254.1.0/24 via 10.160.102.1 dev eth3
169.254.2.0/24 via 10.160.102.2 dev eth3
bash# ping -I eth3 <ASM-VIP>
ping -I eth3 169.254.1.10
PING 169.254.1.10 (169.254.1.10) from 10.160.102.227 eth3: 56(84) bytes of data.
64 bytes from 169.254.1.10: icmp_seq=1 ttl=62 time=0.229 ms
