- play_arrow Overview
- play_arrow Collecting Traffic Samples for Network Monitoring
- Traffic Sampling Configuration
- Minimum Traffic Sampling Configuration
- Configuring Traffic Sampling
- Disabling Traffic Sampling
- Collecting Traffic Sampling Output in a File
- Directing Traffic Sampling Output to a Server Running the cflowd Application
- Collecting Traffic Sampling Output in the Cisco Systems NetFlow Services Export Version 9 Format
- Example: Sampling a Single SONET/SDH Interface
- Example: Sampling All Traffic from a Single IP Address
- Example: Sampling All FTP Traffic
- Tracing Traffic-Sampling Operations
- play_arrow Configuring Forwarding Table Filters to Efficiently Route Traffic
- play_arrow Configuring Forwarding Options for Load Balancing Traffic
- Configuring Load Balancing for Ethernet Pseudowires
- Configuring Load-Balance Groups
- Understanding the Algorithm Used to Load Balance Traffic on MX Series Routers
- Understanding Per-Packet Load Balancing
- Configuring Per-Packet Load Balancing
- Configuring Per-Flow Load Balancing
- Understanding Load Balancing for BGP Traffic with Unequal Bandwidth Allocated to the Paths
- Understanding the Default BGP Routing Policy on Packet Transport Routers (PTX Series)
- ECMP Flow-Based Forwarding on ACX Series Routers
- Per-Flow and Per-Prefix Load Balancing Overview
- Configuring Per-Prefix Load Balancing
- Configuring Per-Flow Load Balancing Based on Hash Values
- Configuring Load Balancing Based on MAC Addresses
- Load Balancing VPLS Non-Unicast Traffic Across Member Links of an Aggregate Interface
- Example: Configuring Multicast Load Balancing over Aggregated Ethernet Links
- play_arrow Configuring Other Forwarding Options
- Configuring Routers, Switches, and Interfaces as DHCP and BOOTP Relay Agents
- Configuring DNS and TFTP Packet Forwarding
- Configuring Port-based LAN Broadcast Packet Forwarding
- Preventing DHCP Spoofing on MX Series 5G Universal Routing Platforms
- Understanding the Hyper Mode Feature on Enhanced MPCs for MX Series Routers and EX9200 Switches
- Configuring Hyper Mode on Enhanced MPCs to Speed Up Packet Processing
- Unsupported Features and CLI Commands When Hyper Mode Is Enabled
- play_arrow Configuration Statements and Operational Commands
Configuring Discard Accounting
On routing platforms containing a Monitoring Services PIC or an Adaptive Services PIC, you can configure accounting for traffic passing through the routing platform.
To configure discard accounting, include the accounting
group group-name statement at the [edit forwarding-options] hierarchy level:
[edit forwarding-options] accounting group-name { output { cflowd [ hostnames ] { aggregation { autonomous-system; destination-prefix; protocol-port; source-destination-prefix { caida-compliant; } source-prefix; } autonomous-system-type (origin | peer); port port-number; version format; } flow-active-timeout seconds; flow-inactive-timeout seconds; interface { engine-id number; engine-type number; source-address address; } } }
To configure the output flow aggregation, include the cflowd statement. For more information about flow aggregation, see Directing Traffic Sampling Output to a Server Running
the cflowd Application. To configure the interval before
exporting an active flow, include the flow-active-timeout statement. The default value for flow-active-timeout is 1800 seconds. To configure the interval before a flow is considered
inactive, include the flow-inactive-timeout statement.
The default value for flow-inactive-timeout is 60 seconds.
To configure the interface that sends out monitored information, include
the interface statement. Discard accounting is supported
for the Monitoring Services PIC only.
When you apply a firewall filter to a loopback interface, the filter might block responses from the Monitoring Services PIC. To allow responses from the Monitoring Services PIC to pass through for accounting purposes, configure a term in the firewall filter to include the Monitoring Services PIC IP address. For more detailed information about configuring firewall filters, see Guidelines for Configuring Firewall Filters and Guidelines for Applying Standard Firewall Filters.
You can use discard accounting for passive and active flow monitoring.
