I was asked early this week what the difference between configuring a routing policy matching on "traffic-engineering" and configuring one matching on "family traffic-engineering" is. I found this to be a very good question, so I decided to write a...
Tag: MPLS
CISCO SPCOR, JNCIP, SERVICE PROVIDER
Effect of Route Summarization and LDP updates
While studying for SPCORE I learned about this behavior: And I tested this in Junos using routing instances and lt interfaces: ylara@R1# show | display set relative set R1 instance-type virtual-router set R1 interface lt-0/0/0.1 set R1 interface lo0.1 set...
JNCIP, JNCIS, SERVICE PROVIDER
MPLS=>RSVP=>CSPF
I was asked about the difference between RSVP and CSPF, and I thought: “hmm, that would probably be like comparing a car’s engine with the car’s GPS”. You definitively need the engine to go anywhere, but if you are like...
JNCIE, JNCIP, SERVICE PROVIDER
JUNOS RIB-GROUPS (2/2)
Glad you came back for more rib-groups fun! We are now going to take a look at some applications of rib-groups that you might find interesting and applicable to your real networks. Warning: Brace for some extra topics! CASE 1...
JNCIE, JNCIP, SERVICE PROVIDER
RSVP reservation styles.
To create a dynamic LSP (Label Switched Path) using RSVP (Resource Reservation Protocols) in JunOS, you define a name that uniquely identifies the LSP and, at minimum, you specify the address of the egress router. EXAMPLE: set label-switched-path R1=>R4 to...
JNCIE, JNCIP, SERVICE PROVIDER
MPLS vs. VXLAN encapsulation
At a high level: MPLS was designed to speed up processing of packets. Forwarding is based on the label in the MPLS header. In Juniper, the label information is kept in the mpls.0 table. Labels are advertised using either RSVP...
JNCIE, JNCIP, SERVICE PROVIDER
LDP vs. RSVP
RSVP - Resource Reservation Protocol LDP - Label Distribution Protocol Standard?RFC3209RFC 5036What configuration steps are required?You need to enable RSVP and MPLS on the interfaces, create the LSP(s) under protocols MPLS, and depending on LSP configuration an IGP might also...
SERVICE PROVIDER
The first Post – Link Protection Vs. Fast Reroute.
Humm, this is going to be my first post, and I am trying to figure out where to start. Mostly because I want to just do something quick, and go live!!! I am excited! This is long overdue! So, here...
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