--> BIG-IP System contains two types of routing tables:
1) Linux Routing Table:
--> Which is used for forwarding the management traffic through the management interface.
--> The routes which are stored in the Linux routing table are called as Management routes.
2) TMM Routing Table:
--> Which is used for forwarding the application traffic as well management traffic through the TMM interfaces.
--> The routes which are used to forward the traffic through TMM interfaces are called as TMM Routes.
--> TMM routes can be present in Linux Routing Table as well TMM Routing Table also.
--> Now we understood that there are two routing tables present in BIG IP System but the question comes which routing table the F5 gonna choose when forwarding or receiving the traffic.
--> Basically BIG IP routing table is a combination of Management or Linux Routing Table and TMM Routing Table.
--> The routes in TMM routing table are configured with the metric value less than the routes in the management routing table.
--> If there is the same route present in both TMM routing table as well Management Routing table then the route in TMM Routing table is chosen due to low metrics.
--> We need to understand one thing here, Whatever the traffic comes via F5 Self IP address gonna use TMM routing table and the traffic comes from the management interface gonna use Management routing table.
--> BIG IP System uses the management routes unless there are no routes present in the TMM routing table.
--> It is recommended to add the static route in management routing table only if your destination networks
Note:
NTP, SNMP, Syslog, Sflow, remote authentication will always use the management default route unless a TMM interface has layer 2 connectivity to the IPs of those services, or you have a more specific route defined in TMM.
Commands on F5 LTM:
i) To check the Routing Table:tmsh show /net route
ii) To check the configured static routes:tmsh list /net route
iii) To check the management route : list /sys management-route
iv) To Check the Management Interface IP address:list /sys management-ip
Reference: F5.com
Md.Kareemoddin,
CCIE #54759
1) Linux Routing Table:
--> Which is used for forwarding the management traffic through the management interface.
--> The routes which are stored in the Linux routing table are called as Management routes.
2) TMM Routing Table:
--> Which is used for forwarding the application traffic as well management traffic through the TMM interfaces.
--> The routes which are used to forward the traffic through TMM interfaces are called as TMM Routes.
--> TMM routes can be present in Linux Routing Table as well TMM Routing Table also.
--> Now we understood that there are two routing tables present in BIG IP System but the question comes which routing table the F5 gonna choose when forwarding or receiving the traffic.
--> Basically BIG IP routing table is a combination of Management or Linux Routing Table and TMM Routing Table.
--> The routes in TMM routing table are configured with the metric value less than the routes in the management routing table.
--> If there is the same route present in both TMM routing table as well Management Routing table then the route in TMM Routing table is chosen due to low metrics.
--> We need to understand one thing here, Whatever the traffic comes via F5 Self IP address gonna use TMM routing table and the traffic comes from the management interface gonna use Management routing table.
--> BIG IP System uses the management routes unless there are no routes present in the TMM routing table.
--> It is recommended to add the static route in management routing table only if your destination networks
Note:
NTP, SNMP, Syslog, Sflow, remote authentication will always use the management default route unless a TMM interface has layer 2 connectivity to the IPs of those services, or you have a more specific route defined in TMM.
Commands on F5 LTM:
i) To check the Routing Table:tmsh show /net route
ii) To check the configured static routes:tmsh list /net route
iii) To check the management route : list /sys management-route
iv) To Check the Management Interface IP address:list /sys management-ip
Reference: F5.com
Md.Kareemoddin,
CCIE #54759
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