Zuul not routing to service - spring-cloud

Question

Zuul not routing to student-service which is registered in Eureka Server.
using Greenwich.SR1
bootstrap.yml
server:
port: 17005
# Eureka server details and its refresh time
eureka:
instance:
leaseRenewalIntervalInSeconds: 1
leaseExpirationDurationInSeconds: 2
client:
registry-fetch-interval-seconds: 30
serviceUrl:
defaultZone: http://localhost:8761/eureka/
healthcheck:
enabled: true
lease:
duration: 5
instance:
lease-expiration-duration-in-seconds: 5
lease-renewal-interval-in-seconds: 30
# Current service name to be used by the eureka server
spring:
application:
name: app-gateway
# Microservices routing configuration
zuul:
routes:
students:
path: /students/**
serviceId: student-service
host:
socket-timeout-millis: 30000
hystrix:
command:
default:
execution:
isolation:
thread:
timeoutInMilliseconds: 30000
I've added PreFilter to log the request from UI. Whenever the request from UI hits the Zuul - I observe the below in logs but no proceeding after - Not getting routed to the student-service.
Request Method : GET Request URL : http://localhost:17005/students/School2
2019-04-26 21:45:54.314 INFO 18196 --- [o-17005-exec-10] c.netflix.config.ChainedDynamicProperty : Flipping property: student-service.ribbon.ActiveConnectionsLimit to use NEXT property: niws.loadbalancer.availabilityFilteringRule.activeConnectionsLimit = 2147483647
2019-04-26 21:45:54.387 INFO 18196 --- [o-17005-exec-10] c.n.u.concurrent.ShutdownEnabledTimer : Shutdown hook installed for: NFLoadBalancer-PingTimer-student-service
2019-04-26 21:45:54.387 INFO 18196 --- [o-17005-exec-10] c.netflix.loadbalancer.BaseLoadBalancer : Client: student-service instantiated a LoadBalancer: DynamicServerListLoadBalancer:{NFLoadBalancer:name=student-service,current list of Servers=[],Load balancer stats=Zone stats: {},Server stats: []}ServerList:null
2019-04-26 21:45:54.682 INFO 18196 --- [o-17005-exec-10] c.n.l.DynamicServerListLoadBalancer : Using serverListUpdater PollingServerListUpdater
2019-04-26 21:45:54.720 INFO 18196 --- [o-17005-exec-10] c.netflix.config.ChainedDynamicProperty : Flipping property: student-service.ribbon.ActiveConnectionsLimit to use NEXT property: niws.loadbalancer.availabilityFilteringRule.activeConnectionsLimit = 2147483647
2019-04-26 21:45:54.723 INFO 18196 --- [o-17005-exec-10] c.n.l.DynamicServerListLoadBalancer : DynamicServerListLoadBalancer for client student-service initialized: DynamicServerListLoadBalancer:{NFLoadBalancer:name=student-service,current list of Servers=[192.168.56.1:56567],Load balancer stats=Zone stats: {defaultzone=[Zone:defaultzone; Instance count:1; Active connections count: 0; Circuit breaker tripped count: 0; Active connections per server: 0.0;]
},Server stats: [[Server:192.168.56.1:56567; Zone:defaultZone; Total Requests:0; Successive connection failure:0; Total blackout seconds:0; Last connection made:Thu Jan 01 05:30:00 IST 1970; First connection made: Thu Jan 01 05:30:00 IST 1970; Active Connections:0; total failure count in last (1000) msecs:0; average resp time:0.0; 90 percentile resp time:0.0; 95 percentile resp time:0.0; min resp time:0.0; max resp time:0.0; stddev resp time:0.0]
]}ServerList:org.springframework.cloud.netflix.ribbon.eureka.DomainExtractingServerList#42abe3b4
2019-04-26 21:45:55.742 INFO 18196 --- [erListUpdater-0] c.netflix.config.ChainedDynamicProperty : Flipping property: student-service.ribbon.ActiveConnectionsLimit to use NEXT property: niws.loadbalancer.availabilityFilteringRule.activeConnectionsLimit = 2147483647
There is no exception trace in the Microservices.
The response to UI:
type=Not Found, status=404
Please help on establishing this routing.