Step 2: Configure Routing Protocol Tracing for a Specific Routing Protocol

Action

To configure routing protocol tracing for a specific routing protocol, follow these steps:

1. In configuration mode, go to the following hierarchy level:

[edit]

user@host# edit protocol protocol-name traceoptions

2. Configure the file, file size, number, and flags:

[edit protocols protocol name traceoptions]

user@host# set file filename size size files number

[edit protocols protocol name traceoptions]

user@host# set flag flag

For example:

[edit protocols ospf traceoptions]

user@host# set file ospflog size 10240 files 10

[edit protocols ospf traceoptions]

user@host# set flag general 

3. Verify the configuration:

user@host# show

For example:

[edit protocols ospf traceoptions]

user@host# show 

file ospflog size 10k files 10;

flag general;

4. Commit the configuration:

user@host# commit

5. View the contents of the file containing the detailed messages:

user@host# run show log filename

For example:

[edit protocols ospf traceoptions]

user@pro4-a# run show log ospflog 

Sep 17 14:23:10 trace_on: Tracing to "/var/log/ospflog" started

Sep 17 14:23:10 rt_flash_update_callback: flash OSPF (inet.0) start

Sep 17 14:23:10 OSPF:  multicast address 224.0.0.5/32, route ignored

Sep 17 14:23:10 rt_flash_update_callback: flash OSPF (inet.0) done

Sep 17 14:23:10 CHANGE   10.255.245.46/32   gw 10.10.208.67  OSPF     
pref 10/0 metric 1/0 fe-0/0/0.0 <Delete Int>

Sep 17 14:23:10 CHANGE   10.255.245.46/32   gw 10.10.208.67  OSPF     
pref 10/0 metric 1/0 fe-0/0/0.0 <Active Int>

Sep 17 14:23:10 ADD      10.255.245.46/32   gw 10.10.208.67  OSPF     
pref 10/0 metric 1/0 fe-0/0/0.0 <Active Int>

Sep 17 14:23:10 CHANGE   10.255.245.48/32   gw 10.10.208.69  OSPF     
pref 10/0 metric 1/0 fe-0/0/0.0 <Delete Int>

Sep 17 14:23:10 CHANGE   10.255.245.48/32   gw 10.10.208.69  OSPF     
pref 10/0 metric 1/0 fe-0/0/0.0 <Active Int>

Sep 17 14:23:10 ADD      10.255.245.48/32   gw 10.10.208.69  OSPF     
pref 10/0 metric 1/0 fe-0/0/0.0 <Active Int>

Sep 17 14:23:10 rt_close: 4/4 routes proto OSPF

[...Output truncated...]

What It Means

Table 54 lists standard tracing options that are available globally or that can be applied to specific protocols. You can also configure tracing for a specific BGP peer or peer group. For more information, see the JUNOS System Basics Configuration Guide.

Table 54: Standard Trace Options for Routing Protocols

Tracing Flag	Description
all	All operations
general	Normal operations and routing table changes
normal	Normal operations
policy	Policy operations and actions
route	Routing table changes
state	State transitions
task	Interface transactions and processing
timer	Timer usage