JEX V20 a
Junues Enterprise Switching
Enterprise Routing and Switching Track Link
Instructor Material Link Instructor Self Service Link
Juniper FREE Learning (Junos Genius) Link
White Board and Config files
Recover EX switch from Linecard back to master0 link
You Tube Videos
White Board Work JEX March 2013
Layer 2 Switching
What is Juniper ELS?
"Enhanced Layer 2 Software (ELS) provides a uniform CLI for configuring and monitoring Layer 2 features on QFX Series switches, EX Series switches, and other Juniper Networks devices, such as MX Series routers. With ELS, you configure Layer 2 features in the same way on all these Juniper Networks devices."
EVPN pdf Link
Understanding EVPN Link
EX Switches Access-layer (2300/3400/4300/4600) Link
XFP/SFP+ (SFP+ =10gig SFP = 1gig) link
XFP Vs SFP Vs SFP+ Link
EX8208 Data Centre Link
Junos Space Network Director Link
PFE's on EX Platforms Link
Configuring MAC Limiting Link
1. EX Series Ethernet Switches use Link Layer Discovery Protocol (LLDP) and Link Layer Discovery Protocol–Media Endpoint Discovery (LLDP-MED) to learn and distribute device information on network links.
2.ELS CLI handles default Vlans to standard JUNos CLI
Some switches running Junos OS that do not support the ELS configuration style are preconfigured with a VLAN named default that does not tag packets and operates only with untagged packets. On these switches, each interface already belongs to the VLAN named default and all traffic uses this VLAN until you configure more VLANs and assign traffic to those VLANs.
4. On a switch that runs Junos OS that does not support ELS, a trunk port does not recognize packets that do not include VLAN tags, which are also known an untagged packets. On a switch that runs Junos OS that supports ELS, a trunk port recognizes untagged control packets, but it does not recognize untagged data packets
3. For a simple network that has only a single VLAN, all packets include a default 802.1Q tag, which is the only VLAN membership that does not mark the packet as tagged.
4. Giving a default vlan a tag will mean it is tagged on the trunk, tried and tested in the lab.
Bridging & VLANs (including Native and Default) Link
Link Layer Discovery Protocol–Media Endpoint Discovery (LLDP-MED) Link
Using LLDP-MED to deliver Voice VLAN Link
Example: Configuring BA Classifiers Link
Bridging and VLAN's Link
Q-in-Q Tunneling Link
Configuring Q-in-Q Juniper Link
1 Default port priority = 128 port numbering starts at 513
2. Default Bridge Priority starts at 32768
3. to activate rstp use
"activate protocols rstp"
then assign to each port
[edit protocols rstp] set int ge-0/0/1
To force stp use "force version"
1. MacSec Static CAK Mode (Recommended for Switch-to-Switch Links) Link
DHCP (IP Helper) DHCP Relay Link
DHCP Option 82 Link Link 2 Link3
How MacSec works Link Link2
Device Security and Firewalling
1. Storm-control all | interfaces --- all interfaces or per interface
2. Can have other named storm profiles other than default
Firewall Filters implicit discard (silent) Link
1. Membership priority by default is 128,change to 255 (highest best) on both master and backup.
QSFP+ (Quad Small Form-factor Pluggable Hardware Link
Setting up an VCP on an EX
Understanding LAG with VCPs
Commit Synchronise config to all members Link
1. Highest numbered interface becomes Primary of Primary knob omitted in RTG configuration.
Redundant Trunk Groups RTG Configuration Link
Understanding LAG with VCPs
Appendix A EPRS
Understanding EPRS Link
Appendix B Multiple Spanning Tree Protocol
Understanding MSTP and CIST Link
Each region within MSTP runs it own IST (internal ST)
Joining the regions together we have a CIST (Common and IST)
one common across all regions.
Appendix C ELS and Non ELS Configuration examples