1. Juniper ESCR Tesco Day 2

2. Overview Day #1 Maintenance and monitoring Routing protocols Lab Day #2 Introduction to Juniper devices Junos CLI System and interface configuration Lab DAY #4 QoS FHRP Lab DAY #3 Routing policy Firewall filters Lab

3. Interfaces  show interface  terse > show interfaces ge-1/1/3.11 terse Interface Admin Link Proto Local Remote ge-1/1/3.11 up up inet 1.1.1.1./30 inet6 fe80::8271:1f00:b7f:58d1/64 mpls multiservice  extensive

5. Interfaces  monitor interface  monitor traffic  clear interface statistics

6. Ping  With rapid option – ping rapid > ping 139.4.13.146 rapid PING 139.4.13.146 (139.4.13.146): 56 data bytes !!!!! --- 139.4.13.146 ping statistics --- 5 packets transmitted, 5 packets received, 0% packet loss round-trip min/avg/max/stddev = 17.258/17.372/17.506/0.089 ms  count, size, source, bypass-routing  Without rapid option (Similar to Cisco verbose ping) > ping 139.4.13.146 PING 139.4.13.146 (139.4.13.146): 56 data bytes 64 bytes from 139.4.13.146: icmp_seq=0 ttl=255 time=18.067 ms 64 bytes from 139.4.13.146: icmp_seq=1 ttl=255 time=27.100 ms 64 bytes from 139.4.13.146: icmp_seq=2 ttl=255 time=17.440 ms

7. Chassis  show chassis hardware  show chassis alarms  show chassis environment  show version  show system uptime

8. OSPF  Link-state IGP with fast convergence and support for large networks  OSPF adjacency phases:  Down – Init – 2way - ExStart – Exchange – Loading – Full  OSFP elects DR and BDR routers on broadcast medium like Ethernet

9. OSFP area types  Backbone  Stub area  NSSA  Totally Stubby area

10. LSA Packet Types  Type 1  Type 2  Type 3 and 4  Type 5  Type 7

11. routing-options { router-id 5.5.5.5; } [edit protocols ospf] area 0.0.0.0 { interface em0.0 { interface-type p2p; } interface em1.0; interface em2.0; interface lo0.0 { passive; }

12. OSPF troubleshooting  show ospf neighbor  show ospf interface  show ospf route  show ospf database

13. BGP  BGP is exterior routing protocol used to connected different autonomous systems.  iBGP and eBGP  BGP configuration requires  neighbour IP address  AS number of the neighbour  local AS number.

14. BGP route selection  Local preference  AS Path  Origin  MED  eBGP over iBGP  Best exit from AS  For eBGP prefer the current active route  RID, cluster lenght, peer ID

15. [ edit protocols bgp] group ibgp { type internal; neighbor 192.168.12.2; neighbor 192.168.13.3; } group ebgp { neighbor 192.168.14.4 { peer-as 2; } [edit routing-options] router-id 5.5.5.5; autonomous-system 1;

16. BGP troubleshooting  show bgp summary  show bgp neighbor  show route advertising-protocol bgp  show route receive-protocol bgp