JNCIA-Junos 102 Notes

Draft Notes on my JNCIA-Junos journey however on the process  I just went studying rather than logging most of eveythings here.

JUNIPER DEVICE PORTFOLIO

M-Series Scale
- Enterprise Routers
- L3/L2 VPNS
- Service Providers

J-Series Scale
- Smaller organizations
- Virtual separation of control plane and data plane (cheaper)
- Hardware separation
- Robust selection compare to SRX series

MX-Series Scale
- 3D Devices - scalability
- Availability - highest level of uptime / redundancy
- Agility - Extreme flexible on functions

EX-Series
- Layer 3 Switch routing capabilities
- Layer 2 Switch

QFX-Series (Nexus Cisco Comparison)
- Data Center devices
- TOR / EOR
- Virtualization (comparable to VDC)

SRX-Series
- Service Gateway Devices
- Flexible / act as Switch, WIFI, FW, VOIP, Router


DEVICE ARCHITECTURE

- Operating systems is based in FreeBSD
- Multi software process
  1. RPD - routing process (routing protocl daemon)
  2. MGD - management daemon
  3.SNMPD - snmp daemon

Routing Engine (RE)
[ RT     FT             ]

[          FT             ]
Packet Forwarding Engine (PFE)

Control Plane - RE
Forwarding - PFE

CLI MODES


Configure and Edit are the same
root> configure
root#


root> edit
root#
 
Comparison
root> show system | display set
cisco> show run | include interface

TROUBLESHOOTING WITH JUNOS
Credits to my collegue who has given these commands which was very helpful during my study. And now I am sharing the information without his knowledge for others to learn.

Basic troubleshoot
show security flow session 
show log traffic_log | last 50
show log messages
show system processes summary
show system processes extensive
show chassis routing-engine
monitor start traffic_log | match 389

Remote VPN users
show security dynamic-vpn users
set access profile dyn-vpn-access-profile client user1 firewall-user password 1234

Check alarms and card status
show chassis fpc pic-status
show chassis cluster status
show system alarms

Routing and ping
traceroute routing-instance SNAP_HealthBridge source x.x.x.x y.y.y.y
ping routing-instance SNAP_HealthBridge source x.x.x.x y.y.y.y record-route count 1 wait 1
ping routing-instance SNAP_HealthBridge source x.x.x.x y.y.y.y count 10000 rapid