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FINAL/final.md

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+Final Lab
+=========
+
+Network Topology
+----------------
+
+![Network topology](figures/topology.png)
+
+Requirements
+------------
+
+1.  A document with addressing table (device, interface, IP address/prefix
+    length) should be provided.
+2.  PPP should be used at R2-R3 and R3-R4 links. Secure PPP authentication
+    method should be configured.
+3.  R3 (ISP) should have routes to directly connected networks only (i.e. ISP
+    knows nothing about customer's private networks).
+4.  Branch #1 and Branch #2 networks should be connected via site-to-site VPN.
+5.  S2 is a L3 switch. S2 should be configured with static routes only (it does
+    not participate in OSPF protocol).
+6.  R1, R4, R5, R6 should receive information about routes to VLAN A and VLAN B
+    via OSPF protocol.
+7.  OSPF passive interfaces should be properly configured.
+8.  PC1, PC2, PC4, PC5, PC6 should receive network configuration via DHCP. R2 is
+    a DHCP server for VLAN A and VLAN B. R4 is a DHCP server for VLAN C and
+    VLAN D.
+9.  R5 and R6 should implement HSRP.
+10. S5 and S6 should be connected with LACP based link aggregation.
+11. Server and all PCs from Branch #1 and Branch #2 networks should be able to
+    access the Internet (PC3).
+12. Server should be accessible from the Internet (PC3).
+
+PPP Links on EVE
+----------------
+
+EVE software doesn't support serial links and therefore PPP. PPPoE should be
+used instead.
+
+An example of PPPoE server configuration for the Branch #1 link:
+
+```
+interface Virtual-Template 1
+    ip address <IP address> <subnet mask>
+    exit
+
+bba-group pppoe BRANCH1_GROUP
+    virtual-template 1
+    exit
+
+interface GigabitEthernet 0/2
+    pppoe enable group BRANCH1_GROUP
+    no shutdown
+    exit
+```
+
+An example of PPPoE client configuration:
+
+```
+interface Dialer1
+    ip address <IP address> <subnet mask>
+    encapsulation ppp
+    dialer pool 1
+    exit
+
+interface GigabitEthernet0/0
+    pppoe enable
+    pppoe-client dial-pool-number 1
+    no shutdown
+    exit
+```
+
+Enabling Layer 3 Features on a Switch
+-------------------------------------
+
+L3 features are already enabled on EVE switches (Cisco vIOS L2 nodes).
+
+On Catalist 2960 series switches L3 features have to be enabled with the
+following commands:
+
+```
+Switch(config)# sdm prefer lanbase-routing
+Switch(config)# exit
+Switch# copy running-config startup-config
+Switch# reload
+```
+
+Refer to [Lab "L3 switch + DHCP"][L3 Switch Lab] for details on L3 switch
+configuration.
+
+[L3 Switch Lab]: http://ibks.spbstu.ru:8443/StudyProc/CiscoLabs/ccna-routing-and-switching/2-routing-switching-essentials/8-dhcp/dhcp/Lab%20L3%20Switch%20+%20DHCP.pdf
+
+Known Packet Tracer Issues
+--------------------------
+
+*   Tunnel interface turns down (`line protocol is down`) with the following error:
+
+    ```
+    %TUN-5-RECURDOWN: 0 temporarily disabled due to recursive routing
+    ```
+
+    when `default-information originate` OSFP setting is used. This happens due
+    to incorrect handling of administrative distance of 0.0.0.0/0 route that is
+    received via OSPF.
+
+    As a workaround, use static default routes instead of
+    `default-information originate` OSFP setting.
+
+*   PC4, PC5, PC6 may fail to receive configuration via DHCP.
+
+    As a workaround, temporarily remove the link between S5 and R5 (or S6 and R6)
+    util DHCP exchange is completed.