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This year (2018) is my year for Juniper. I got certification JNCIE-DC Juniper Networks Certified Internet Expert with number #128, It's mean 128 people got that certification in earth on 13th July 2018.
Second on December 2018, Juniper give me new badge 3A, due to pass JNCIA-Cloud. The JNCIA x 3 (or AAA) certification badge from Juniper Networks recognizes individuals who have developed a broad range of introductory skills across a number of networking technologies. Individuals have achieved the associate-level certifications for design (JNCDA), Junos OS (JNCIA-Junos) and Cloud (JNCIA-Cloud). A recipient of this badge is well-positioned to begin specialization in a variety of networking roles.
Previously I have posted simple example for Junos Op Script or Operation Script, Now I'm posting simple example for On-box Scripts about Junos Event Scripts Automation when detect interface down and execute health check command to get realtime evidence.
awa@JUNOS# show event-options
May 30 17:41:20
policy LINK_DOWN_LOG {
events snmp_trap_link_down;
then {
execute-commands {
commands {
"show interfaces extensive {$$.interface-name}";
}
output-filename show_interfaces_extensive;
destination LOCAL_VAR_TMP;
output-format text;
}
}
}
destinations {
LOCAL_VAR_TMP {
archive-sites {
/var/tmp;
}
}
}
{master:0}[edit]
awa@JUNOS#
How to test that event scripts ?
awa@JUNOS# run file list /var/tmp/ | grep show
May 30 17:42:23
{master:0}[edit]
awa@JUNOS# set interfaces xe-0/0/1 disable
May 30 17:42:33
{master:0}[edit]
awa@JUNOS# commit
May 30 17:42:43
configuration check succeeds
commit complete
{master:0}[edit]
awa@JUNOS# run file list /var/tmp/ | grep show
May 30 17:42:50
JUNOS_20180530_174245_show_interfaces_extensive
{master:0}[edit]
awa@JUNOS# run file show /var/tmp/JUNOS_20180530_174245_show_interfaces_extensive | no-more
May 30 17:43:06
root@JUNOS> show interfaces extensive "xe-0/0/1"
Physical interface: xe-0/0/1, Administratively down, Physical link is Up
Interface index: 650, SNMP ifIndex: 512, Generation: 141
Link-level type: Ethernet, MTU: 2000, LAN-PHY mode, Speed: 10Gbps, Duplex: Full-Duplex, BPDU Error: None, Loop Detect PDU Error: None, MAC-REWRITE Error: None, Loopback: Disabled, Source filtering: Disabled, Flow control: Disabled, Media type: Fiber
Device flags : Present Running
Interface flags: Down SNMP-Traps Internal: 0x4000
Link flags : None
CoS queues : 8 supported, 8 maximum usable queues
Hold-times : Up 0 ms, Down 0 ms
Current address: 02:05:86:71:2d:07, Hardware address: 02:05:86:71:2d:07
Last flapped : 2018-05-30 17:28:23 UTC (00:14:22 ago)
Statistics last cleared: Never
Traffic statistics:
Input bytes : 0 0 bps
Output bytes : 176652 0 bps
Input packets: 0 0 pps
Output packets: 0 0 pps
IPv6 transit statistics:
Input bytes : 0
Output bytes : 0
Input packets: 0
Output packets: 0
Input errors:
Errors: 0, Drops: 0, Framing errors: 0, Runts: 0, Policed discards: 0, L3 incompletes: 0, L2 channel errors: 0, L2 mismatch timeouts: 0, FIFO errors: 0, Resource errors: 0
Output errors:
Carrier transitions: 5, Errors: 0, Drops: 0, Collisions: 0, Aged packets: 0, FIFO errors: 0, HS link CRC errors: 0, MTU errors: 0, Resource errors: 0
Egress queues: 8 supported, 4 in use
Queue counters: Queued packets Transmitted packets Dropped packets
0 16045690984503098046 0 16045690984503098046
3 16045690984503098046 0 16045690984503098046
4 16045690984503098046 0 16045690984503098046
7 16045690984503098046 0 16045690984503098046
Queue number: Mapped forwarding classes
0 best-effort
3 fcoe
4 no-loss
7 network-control
Active alarms : None
Active defects : None
MAC statistics: Receive Transmit
Total octets 0 176652
Total packets 0 0
Unicast packets 0 0
Broadcast packets 0 4206
Multicast packets 0 0
CRC/Align errors 0 0
FIFO errors 0 0
MAC control frames 0 0
MAC pause frames 0 0
Oversized frames 0
Jabber frames 0
Fragment frames 0
VLAN tagged frames 0
Code violations 0
MAC Priority Flow Control Statistics:
Priority : 0 0 0
Priority : 1 0 0
Priority : 2 0 0
Priority : 3 0 0
Priority : 4 0 0
Priority : 5 0 0
Priority : 6 0 0
Priority : 7 0 0
Filter statistics:
Input packet count 0
Input packet rejects 0
Input DA rejects 0
Input SA rejects 0
Output packet count 0
Output packet pad count 0
Output packet error count 0
CAM destination filters: 2, CAM source filters: 0
Packet Forwarding Engine configuration:
Destination slot: 0 (0x00)
CoS information:
Direction : Output
CoS transmit queue Bandwidth Buffer Priority Limit
% bps % usec
0 best-effort 15 1500000000 15 0 low none
3 fcoe 35 3500000000 35 0 low none
4 no-loss 35 3500000000 35 0 low none
7 network-control 15 1500000000 15 0 low none
Interface transmit statistics: Disabled
Logical interface xe-0/0/1.0 (Index 565) (SNMP ifIndex 519) (HW Token 4094) (Generation 174)
Flags: Device-Down SNMP-Traps 0x4004000 Encapsulation: ENET2
Traffic statistics:
Input bytes : 0
Output bytes : 3738
Input packets: 0
Output packets: 89
Local statistics:
Input bytes : 0
Output bytes : 3738
Input packets: 0
Output packets: 89
Transit statistics:
Input bytes : 0 0 bps
Output bytes : 0 0 bps
Input packets: 0 0 pps
Output packets: 0 0 pps
Protocol inet, MTU: 1986, Generation: 199, Route table: 0
Flags: Sendbcast-pkt-to-re
Addresses, Flags: Dest-route-down Is-Preferred Is-Primary
Destination: 192.168.111/24, Local: 192.168.111.1, Broadcast: 192.168.111.255, Generation: 169
{master:0}[edit]
awa@JUNOS#
This is example and demo uses Junos on-box script for hello world. Basically on-box script divide into 3: operational script (op script), commit script and event script. On this posting I will show you the very simple about op script.
# Running Op Script from operational mode
awa@JUNOS> show configuration system scripts
op {
file hello.slax;
file show.slax;
}
{master:0}
awa@JUNOS> file list /var/db/scripts/op
/var/db/scripts/op:
hello.slax
show.slax*
{master:0}
awa@JUNOS> file show /var/db/scripts/op/hello.slax
version 1.0;
ns junos = "http://xml.juniper.net/junos/*/junos";
ns xnm = "http://xml.juniper.net/xnm/1.1/xnm";
ns jcs = "http://xml.juniper.net/junos/commit-scripts/1.0";
import "../import/junos.xsl";
match / {
{
}
}
{master:0}
awa@JUNOS> op hello
Hello World
{master:0}
awa@JUNOS>
# Running Op Script from start shell
*not all op script can running from start shell
awa@JUNOS> start shell
% cd /var/db/scripts/op
% ls -l
total 16
-rw-r--r— 1 awa wheel 275 Jan 9 17:02 hello.slax
-rwxrws--- 1 awa wheel 442 Jan 8 16:29 show.slax
% cat hello.slax
version 1.0;
ns junos = "http://xml.juniper.net/junos/*/junos";
ns xnm = "http://xml.juniper.net/xnm/1.1/xnm";
ns jcs = "http://xml.juniper.net/junos/commit-scripts/1.0";
import "../import/junos.xsl";
match / {
{
}
}
% cli op hello
Hello World
%
