Internal Function for Backup Configuration

This is function to backup configuration without any tools, just prepare FTP server as destination configuration. System archive will be copy current configuration every time you do command commit sync for redundancy RE or commit for single RE. You can use serveral protocol for copy config from Junos to Server: ftp, http, scp.


archive-sites {
file:///;
ftp://username@host:url-path password password;
http://username@host:url-path password password;
scp://username@host:url-path password password;
}


example:
set system archival configuration archive-sites "ftp://user:password@1.2.3.4/config/node"


For advanced archieve you can use free third software 'rancid' http://www.shrubbery.net/rancid/

Graceful-restart in Juniper

I share simple explanation about graceful-restart in Juniper router:

set routing-instances R-INSTANCE-A routing-options graceful-restart

Explanation is graceful-restart enable by default at the moment create routing protocols, to disable graceful-restart using:

set routing-instances R-INSTANCE-A routing-options graceful-restart disable

If we load configuration from file, didn't configure line-by-line, so it's possible one routing-instance routing-options graceful-restart command appear and another routing-instance routing-options graceful-restart not appear, so for the same configuration, better we delete the command config not graceful-restart disable.

We can verify with command graceful-restart is enable or disable

On Juniper with OSPF dynamic-routing-protocol enable, so we can verify with 'show ospf overview'

...

Restart: Enabled

Restart duration: …sec

Restart grace period: …sec

Helper mode: Enabled

...

Graceful-restart function is for maintance routing protocols neighbor for example OSPF, if we have 3 router G1 --- G2 --- G3, all running OSPF, at the moment on G2 RE (routing engine) master failed and switch to RE backup, OSPF neighbor status in G1 dan G3 will down, but because G2 enable graceful-restart enable, G1 still send traffic to G2 until graceful-restart timer in G2 expire while wait RE backup will be handle as master, so traffic is not interrupt until RE backup be master. Different case if graceful-restart disable G1 will discard traffic even G2 have redundancy RE, so better graceful-restart is enable.

If we enable graceful-restart in single RE, it's be useless configuration. Every routing-protocols have different charateristic of graceful but overall function is same.

For reference of OSPF graceful: RFC3623

Next time I will test on lab: Cisco and Juniper.

CCIE to be continue

Hi ccie reader or reader, long time I'm not update blog. I'm very busy to make my life is interesting and not bored. Many experience, new experience and even fresh experience I got. Alhamdulillah.

I'll update about me. I leave from comfort zone, what is mean? I resign from ISP company and work as contractor. I work without guarantee of time, I do project, if project is finish or client don't need me then contract finish. Uncomfortable but I enjoy. I work with client have project out of cisco. I never touch and telnet cisco. Am I hate with cisco? no. I will take experience from another vendor to built ability cisco. I can get comparasion and other perspective of cisco.

How about ccie journey? journey to be continue, it's part of journey. Ccie is the final? no, ccie is beginning to get a lot of experience, ccie is gate to enter IP gate. if someone say I'm network engineer don't believe it before he mention ccie number.