Configuring High Availability on Juniper Virtual Chassis

hi this is James and rhaegar here at Juniper Networks education services are you familiar with our learning paths we offer 14 different paths covering the Junos OS and specific juniper technologies each path shows the courses we offer and the relevant certifications in the order we suggest to maximize your learning just visit dubbed of WN apart net slash learning paths to get started when you click on a track you'll see all the courses in that track and the Associated certifications you can click each course or certification to view more details if you follow a learning path you'll get the most from your training with Juniper Networks now let's get to your learning pipe hi my name is Bhavik Otsuki I am technical consultant and juniper instructor in Poland today I would like to show you how to configure and verify I tried features in virtual Schatzi like gr us and ns are juniper VLC is a network virtualization technology which supports up to 10 switches within one stack all switches are managed by a single virtual management interface and virtual console there are several benefits using VC in the network one of the most important is the fact that between devices participating in VC there is no spanning tree devices communicates each other using juniper proprietary protocol called VCC P will tarnish a seed control protocol to create dripper VC we need only to connect devices using virtual support which are enabled by default or of course we can use uplink ports in some X models like 4500 we can use also access ports to create such connection in the factory configuration there are no a tree features unable to cross VC that means Beca protein can detects failure of primary routing engine after five minutes this time could be shortened up to two seconds by and I'm being graceful rutting and the switchover feature this feature also has impact on local switching within VC during routing engine switch over without GREs new master routing engine restarts all PA fees across every switch participating in VC GREs enables chassis demo and current sync demo on backup routing engine which synchronizes its tight with master out in kangan getting information about all hardware components present in our vc you can simply turn on and verify GREs using the set chassis random dancing graceful switch over to verify mention feature use shout systems which over command please note that it must be executed from backup routing engine we can see here that GREs on the backup routing engine is turn and fully synchronized with master routing engine and other features which should be enabled in VCR non stop routing and non stop bridging NSR enables our PD on the backup routing engine our PD is a routing protocol daemon which is responsible for routing Indu knows LP d on the backup routing kangan synchronizes its state with our PD on master routing engine after routing engine switch over all routing information is preserved on backup routing engine including links tag databases routing tables forwarding tables and agile census non stop routing supports multiple protein protocols such rig BGP OSPF is a SP and MPLS c9 protocols like ADP and our SOP please note that non stop routing uses GREs infrastructure which means that GREs must be an A we need to execute only two commands to enable NSR as you can see there is a set system coming synchronize which means that every commit command will be execute as a comet synchronize in our infrastructure and the second one is set routing options non-stop routing to verify NSA and we need to execute show task replication command from master routing engine here we can see replication status for OSPF routing protocol does the breeding is very similar to non-stop routing but works for layer 2 protocol such as spanning tree protocol lldp led p.m. ad and LACP on backup routing engine starts layer to control protocol daemon which controls layer two protocols in journals OS it uses the same prerequisites like non-stop router configuration on most of bridging is as simple as GREs or non-stop routing but there is no CLI command which shows not the bridging state let's check now how VC behave during switch over with and without a tray features buts my lab 3 8 switches works between vc x Beto is a standalone switch between VC and Beatles standalone switch there is OSPF where virtual chassis advertises 1/7 2.16 dot 0 dot 0 / 22 24 subnet during Lita's will try to verify irritability of these prefix from hb2 perspective ok let's verify now in our love environment how to describe features work in physical environment we have and situation see where tree as we just currently are present in as you can see we have master backup and one switch which works as a line card and on another xB to switch we can see that the OSPF neighbor flip is established with virtuosity and we are receiving and this prefix these two prefixes from wear SPF from which russia see let's verify if we can reach because drought yes it's walking let's now verify how guilt Russians it behaves without any high availability features so let's generate some ICMP packets and let's try to switch over master and back up bro we have to must accept this one and now our flag is back up switch now operating as a master and here you can observe that we are losing some ICMP pockets it may take a while after a line card switches connect to the new master routing and so we can observe some Network outage in our environment head back to our VC yeah as I said the old backup routing engine currently is a master role as a next step let's enable and verify how high of a liability features warden our we see we have to enable commit synchronize which is mandatory when using north of bridging feature as a next step we have to enable race routing every switch over and nonce the proud let's go meet our configuration we may stop a simpie here right counting is committed let's now verify if our HIV features are working properly to verify it we have to log into the bike aprotic engine which currently is assignment number ID 0 3 yeah so we are in a backup routing engine to verify grace walking can you switch over we have to execute the shelves system switchover command we can see that the feature is currently on and the configuration and kernel database is fully synchronized it's in already day we can also verify and do not the problem after enables non-stop routing on the back approach you can during the our PD process should start so let's check it routing process is called RVD here yeah we can observe it slogan we can of course verify routing table we have a copy information from master routing can read the same story with forwarding table it's also copied from master Alton Kenji we are using in our topology OSPF show so we can also check if I always give microchip information is a synchronized here so let's back to the master we can also verify if not the problem avoids properly from master routing engine and we have to use command show task replication so as you can see everything OSPF information is synchronized so let's verify if these features really wall let's generate another ICMP echo request and let's try to generate a switch over on switch over event on our virtual chassis okay now we have a new master album can Jane it's a member ID zero again and as you can see here we see that there is no packet loss yeah so as we can observe this high above our availability factions gives the ability to preserve critical information which is required to avoid network outages when a failure occurs thank you for watching this video and see you next time visit the Juniper education Services website to learn more about courses view our full range of classroom online and e-learning courses learning paths industry segments and technology specific training paths Juniper Networks certification program the ultimate demonstration of your competence and the training community from forums to social media join the 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Channel: JuniperNetworks

Views: 14,455

Rating: 4.6999998 out of 5

Keywords: junos, high availability, nonstop routing, nonstop bridging, ex series

Id: 7jSzgalUXeI

Length: 14min 18sec (858 seconds)

Published: Tue Mar 10 2015