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Verifying a CoS Configuration
To verify a CoS configuration on a Services Router, perform the tasks relevant to your CoS configuration from the following:
- Verifying Multicast Session Announcements
- Verifying a Virtual Channel Configuration
- Verifying a Virtual Channel Group Configuration
- Verifying an Adaptive Shaper Configuration
- Displaying CoS Tunnel Configurations
- Verifying a CoS GRE Tunnel Queuing Configuration
- Verifying a CoS IP-IP Tunnel Configuration
Verifying Multicast Session Announcements
Purpose
Verify that the Services Router is listening to the appropriate groups for multicast Session Announcement Protocol (SAP) session announcements.
Action
From the CLI, enter the show sap listen command.
Sample Output
user@host> show sap listenGroup Address Port 224.2.127.254 9875
Meaning
The output shows a list of the group addresses and ports that SAP and SDP listen on. Verify the following information:
- Each group address configured, especially the default 224.2.127.254, is listed.
- Each port configured, especially the default 9875, is listed.
Related Topics
For a complete description of the show sap listen command and output, see the Junos Routing Protocols and Policies Command Reference.
Verifying a Virtual Channel Configuration
Purpose
Verify the virtual channel configuration on a logical interface. Verify the class-of-service (CoS) configuration associated with an interface on a Services Router.
Action
From the CLI, enter the show class-of-service virtual-channel command.
Sample Output
user@host> show class-of-service virtual-channelVirtual channel: vc-1 Index: 1
Meaning
Verify that the name of the configured virtual channel is displayed in the output.
Related Topics
For a complete description of the show class-of-service virtual-channel command and output, see the Junos System Basics and Services Command Reference.
Verifying a Virtual Channel Group Configuration
Purpose
Verify the virtual channel group configuration on a logical interface. Verify the class-of-service (CoS) configuration associated with an interface on a Services Router.
Action
From the CLI, enter the show class-of-service virtual-channel-group command.
Sample Output
user@host> show class-of-service virtual-channel-groupVirtual channel group: vc-group, Index: 16321 Virtual channel: vc-1 Scheduler map: sc-map
Meaning
Verify that the name of the configured virtual channel group is displayed in the output.
Related Topics
For a complete description of the show class-of-service virtual-channel-group command and output, see the Junos System Basics and Services Command Reference.
Verifying an Adaptive Shaper Configuration
Purpose
Verify the adaptive shaper trigger point and its associated transmit rate. Verify the class-of-service (CoS) configuration associated with an interface on a Services Router.
Action
From the CLI, enter the show class-of-service adaptive-shaper and show class-of-service interface t1-0/0/2 commands.
Sample Output
user@host> show class-of-service adaptive-shaperAdaptive shaper: fr-shaper, Index: 35320
Trigger type Shaping rate
BECN 64000 bpsuser@host> show class-of-service interface
t1-0/0/2Physical interface: t1-0/0/2, Index: 137
Queues supported: 8, Queues in use: 4
Scheduler map: <default>, Index: 2
Logical interface: t1-0/0/2.0, Index: 69
Object Name Type Index
Adaptive-shaper fr-shaper 35320
Classifier ipprec-compatibility ip 11Meaning
Verify the following information:
- The trigger type and shaping rate are consistent with the configured adaptive shaper.
- The adaptive shaper applied to the logical interface is displayed under Name.
Related Topics
For a complete description of the show class-of-service adaptive-shaper and show class-of-service interface commands and output, see the Junos System Basics and Services Command Reference.
Displaying CoS Tunnel Configurations
Purpose
Verify the configuration of the CoS tunnel queuing on a Services Router. You can analyze the flow of traffic by displaying the entire configuration. The following output is specific to CoS queuing configuration.
Action
From the CLI on Router A and B, enter the following show commands.
Router B
Router A
Verifying a CoS GRE Tunnel Queuing Configuration
Purpose
Verify that the Services Router is configured properly for tunnel configuration.
Action
From the CLI, enter the show interfaces queue gr-0/0/0.0 command.
 | Note: If you enter gr-0/0/0 only, queue information for all tunnels is displayed. If you enter gr-0/0/0 unit logical_unit_number queue information for the specific tunnel is displayed. |
Sample Output
user@host> show interfaces queue gr-0/0/0.0Logical interface gr-0/0/0.0 (Index 68) (SNMP ifIndex 112)
Forwarding classes: 8 supported, 4 in use
Egress queues: 8 supported, 4 in use Burst size: 0
Queue: 0, Forwarding classes: VOICE
Queued:
Packets : 7117734 7998 pps
Bytes : 512476848 4606848 bps
Transmitted:
Packets : 4548146 3459 pps
Bytes : 327466512 1992912 bps
Tail-dropped packets : 0 0 pps
RED-dropped packets : 2569421 4537 pps
Low : 0 0 pps
Medium-low : 0 0 pps
Medium-high : 0 0 pps
High : 2569421 4537 pps
RED-dropped bytes : 184998312 2613640 bps
Low : 0 0 bps
Medium-low : 0 0 bps
Medium-high : 0 0 bps
High : 184998312 2613640 bps
Queue: 1, Forwarding classes: GOLD
Queued:
Packets : 117600 0 pps
Bytes : 8467200 0 bps
Transmitted:
Packets : 102435 0 pps
Bytes : 7375320 0 bps
Tail-dropped packets : 0 0 pps
RED-dropped packets : 15165 0 pps
Low : 0 0 pps
Medium-low : 0 0 pps
Medium-high : 0 0 pps
High : 15165 0 pps
RED-dropped bytes : 1091880 0 bps
Low : 0 0 bps
Medium-low : 0 0 bps
Medium-high : 0 0 bps
High : 1091880 0 bps
Queue: 2, Forwarding classes: SILVER
Queued:
Packets : 0 0 pps
Bytes : 0 0 bps
Transmitted:
Packets : 0 0 pps
Bytes : 0 0 bps
Tail-dropped packets : 0 0 pps
RED-dropped packets : 0 0 pps
Low : 0 0 pps
Medium-low : 0 0 pps
Medium-high : 0 0 pps
High : 0 0 pps
RED-dropped bytes : 0 0 bps
Low : 0 0 bps
Medium-low : 0 0 bps
Medium-high : 0 0 bps
High : 0 0 bps
Queue: 3, Forwarding classes: BRONZE
Queued:
Packets : 0 0 pps
Bytes : 0 0 bps
Transmitted:
Packets : 0 0 pps
Bytes : 0 0 bps
Tail-dropped packets : 0 0 pps
RED-dropped packets : 0 0 pps
Low : 0 0 pps
Medium-low : 0 0 pps
Medium-high : 0 0 pps
High : 0 0 pps
RED-dropped bytes : 0 0 bps
Low : 0 0 bps
Medium-low : 0 0 bps
Medium-high : 0 0 bps
High : 0 0 bps
Meaning
The output lists the egress queues and the corresponding forwarding classes. Assuming that traffic is correctly classified using appropriate classifiers on the ingress port, verify the traffic flow in various queues.
Related Topics
For a complete description of the show interfaces queue command and output, see the Junos Interfaces Command Reference.
Verifying a CoS IP-IP Tunnel Configuration
Purpose
Verify that the Services Router is configured properly for tunnel configuration.
Action
From the CLI, enter the show interfaces queue ip-0/0/0.0 command.
| Note: If you enter ip-0/0/0 only, queue information for all tunnels is displayed. If you enter ip-0/0/0 unit logical_unit_number queue information for the specific tunnel is displayed. |
Sample Output
user@host> show interfaces queue ip-0/0/0.0Logical interface ip-0/0/0.0 (Index 70) (SNMP ifIndex 56 Forwarding classes: 8 supported, 4 in use Egress queues: 8 supported, 4 in use Burst size: 0 Queue: 0, Forwarding classes: q0 Queued: Packets: 38802710 22687 pps Bytes: 10942364220 51183344 bps
Meaning
The output lists the egress queues and the corresponding forwarding classes. Assuming that traffic is correctly classified using appropriate classifiers on the ingress port, verify the traffic flow in various queues.
Related Topics
For a complete description of the show interfaces queue command and output, see the Junos Interfaces Command Reference.
