User's Manual

Brocade Network Advisor IP User Manual 547

53-1003056-01

Chapter

Telemetry

In this chapter

•Telemetry overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 547

•Policy-based routing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 547

•ACL Accounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 558

Telemetry overview

NOTE

Network telemetry is only supported on Ethernet router, Ethernet core router, or Ehternet Backbone

router products running 5.4 or later.

Network telemetry enables you to monitor, report, and analyze traffic information and data on your

network. The Management application provides three features that enable you to perform Network

telemetry:

• ACLs - Collection of permit and deny statements (rules) used to permit or deny incoming

frames from passing through an interface. To create an ACL, refer to “Layer 3 access control

list policy” on page 580.

• PBR - Collection of ACLs and route maps (rules) that enable you to redirect traffic. To create a

policy-based routing policy, refer to “Adding a new policy” on page 550.

• ACL accounting - Counters used to track the number of times an ACL is used to filter traffic. To

enable ACL accounting, refer to “Enabling or disabling ACL accounting” on page 558.

Policy-based routing

NOTE

Network telemetry is only supported on Ethernet router, Ethernet core router, or Ehternet Backbone

router products running 5.4 or later.

Normally, when a router receives a packet it forwards it based on the destination address in the

packet, PBR enables you to forward the packet based on other criteria such as, source or

destination network, source or destination address, source or destination port, and protocol.

PBR uses access control lists (Layer 3 ACLs) and route maps (PBR policies) to filter and route IP

packets to one or more specified ports.

• ACLs are used to classify the traffic.

• PBR policies are used to set routing attributes and next hop for the traffic. Next hop can be IP

(IPv4 or IPv6 formats), Flood VLAN, or Port/LAG.