LTE link failover is not triggered.

• In some cases, the user would like to have LTE as the primary internet link, and the configuration might also look correct, but still the LTE might not take the 1st priority

config authority router ssr_multi_wan service-route internet-route next-hop node0 wan3 node-name  node0

config authority router ssr_multi_wan service-route internet-route next-hop node0 wan3 interface  LTE

config authority router ssr_multi_wan service-route internet-route next-hop node0 wan3 gateway-ip 10.10.3.1

config authority router ssr_multi_wan service-route internet-route next-hop node0 wan3 vector   ISP1_vec

config authority router ssr_multi_wan service-route internet-route next-hop node0 wan1 node-name  node0

config authority router ssr_multi_wan service-route internet-route next-hop node0 wan1 interface  wan1

config authority router ssr_multi_wan service-route internet-route next-hop node0 wan1 gateway-ip 10.219.86.1

config authority router ssr_multi_wan service-route internet-route next-hop node0 wan1 vector   ISP2_vec

config authority router ssr_multi_wan service-route internet-route next-hop node0 wan2 node-name  node0

config authority router ssr_multi_wan service-route internet-route next-hop node0 wan2 interface  wan2

config authority router ssr_multi_wan service-route internet-route next-hop node0 wan2 gateway-ip 10.219.87.1

config authority router ssr_multi_wan service-route internet-route next-hop node0 wan2 vector   ISP3_vec

config authority router ssr_multi_wan service-route internet-route reachability-detection enabled        true

config authority router ssr_multi_wan service-route internet-route reachability-detection probe probe icmp-probe-profile icmp-probe

config authority router ssr_multi_wan icmp-probe-profile icmp-probe name          icmp-probe

config authority router ssr_multi_wan icmp-probe-profile icmp-probe probe-interval     10

config authority router ssr_multi_wan icmp-probe-profile icmp-probe number-of-attempts   4

config authority router ssr_multi_wan icmp-probe-profile icmp-probe probe-duration     1

config authority router ssr_multi_wan icmp-probe-profile icmp-probe probe-address     8.8.8.8

config authority router ssr_multi_wan icmp-probe-profile icmp-probe probe-failure-trigger any

config authority router ssr_multi_wan icmp-probe-profile icmp-probe sla-metrics max-loss 10

config authority router ssr_multi_wan icmp-probe-profile icmp-probe sla-metrics latency max  250

config authority router ssr_multi_wan icmp-probe-profile icmp-probe sla-metrics latency mean 100. (Increase this value based on LTE ping latency)

• This could be due to the SLA metrics latency mean configured in the ICMP-probe-profile.
• Try to ping the internet IP with the LTE interface and check if the latency is high. If the latency exceeds that of the configuration, please modify the configuration accordingly.

Example:

[email protected]_multi_wan# ping egress-interface lte 8.8.8.8

PING 8.8.8.8 56 bytes of data.

Ping from 8.8.8.8 (8.8.8.8): icmp_seq=0 ttl=110 time=150.763ms

Ping from 8.8.8.8 (8.8.8.8): icmp_seq=1 ttl=110 time=150.333ms

Ping from 8.8.8.8 (8.8.8.8): icmp_seq=2 ttl=110 time=150.356ms

Ping from 8.8.8.8 (8.8.8.8): icmp_seq=3 ttl=110 time=150.571ms

--- 8.8.8.8 ping statistics ---

4 packets transmitted, 4 packets received, 0.0% packet loss