
In Unix-based systems like Linux, backslashes " \\ " are used as line continuation characters. They indicate that the command continues on the next line, allowing a long command to be split across multiple lines for better readability.  For example:

```
vManage1:~$ openssl req -x509 -new -nodes -key ROOT-CA.key -sha256 -days 3652 \
-subj "https://cdn.networklessons.com/C=NL/ST=NL/O=nwl-lab- \ sdwan/CN=vmanage1.lab.nwl.ai" \
-out ROOT-CA.pem
```
should actually be input like this:

```
openssl req -x509 -new -nodes -key ROOT-CA.key -sha256 -days 3652  -subj "https://cdn.networklessons.com/C=NL/ST=NL/O=nwl-lab-sdwan/CN=vmanage1.lab.nwl.ai" -out ROOT-CA.pem
```

Links:

https://forum.networklessons.com/t/cisco-sd-wan-controllers-installation/14869/62?u=lagapidis

Linux - Line continuation character `backslash`

IPv6 EUI-64 host address configuration method

IPv6 Neighbor Discovery Protocol Extensions

IPv6 RA Guard

IPv6 computing a global unicast address

IPv6 first hop security features on CML

IPv6 global unicast address

IPv6 link-local address

IPv6 minimum and maximum prefix lengths

IPv6 mobility features

IPv6 simplicity and complexity of various prefix values

IPv6 stateless DHCP active clients equals zero

IPv6 transition technologies

IPv6

IS-IS - DIS and Pseudonode

IS-IS - Maximum composite metrics

IS-IS - attached bit

IS-IS - route filtering

IS-IS - up-down bit

IS-IS multitopology support

IS-IS

ISDN

ISIS circuit-type command

ISP Peering

ISPs, tiers, transiting, and the Internet

Importance of self-study for CCIE or CCDE

Interface - configuring a range of interfaces

Interface - no carrier counter

Interface - show interfaces counters explained

Interface - unknown protocol drops

Interface speed and bandwidth

Interior Gateway Protocol (IGP)

Internet Exchange Point (IXP)

Internet Service Provider (ISP)

Intrusion prevention system (IPS)

Kron task scheduler

L2TPv3 over IPSec

L2TPv3

LACP

LAG - Multi-Chassis LAG

LFA - Topology Independent LFA

LFA, remote LFA, and how they work together in OSPF

LISP - map request and reply process

LISP - what is it

LISP and overlapping address spaces

LISP debug traffic between two EIDs

LISP host mobility use cases

LISP where EID-to-RLOC mappings originate

LISP

Loop-Free Alternate (LFA) Fast Reroute (FRR)

Loop-Free Alternate (LFA) and remote LFA

Loops in layers 2 and 3

MAC - changing the MAC address on a switchport

MAC Access List EtherType

MAC Access List

MAC Address Table - Static assignment use cases

MAC address flapping

MAC address of all zeros

MAC address table - Switches maintain one table per VLAN

MAC address table - multiple entries of the same MAC address

MAC address table - multiple static entries

MAC address table - show command on Nexus device

MAC address table - static entry

MAC address table populated using source address field

MAC address table static multicast entry

MAC address table

MAC address

MPLS - BGP customer prefixes do not appear in the LFIB

MPLS - Connecting IPv6 sites over an IPv4 backbone

MPLS - Disabling IPv4 address family in BGP for VPNv4

MPLS - Ethernet over MPLS (EoMPLS)

MPLS - L3VPN BGP EIGRP redistribution

MPLS - L3VPN BGP OSPF Redistribution

MPLS - LDP source interface

MPLS - Layer 2 VPNs

MPLS - Multi-VRF CE

MPLS - OSPF redistributed routes appear as O IA

MPLS - Segment Routing over MPLS

MPLS - Transport Profile

MPLS - Using RSVP for Traffic Engineering

MPLS - Using the BGP Allow-AS in feature

MPLS - VPN label

MPLS - VPN redistributing default route from CE into BGP

MPLS - VPNv4 Labels are assigned per route

MPLS - Virtual Private Network (VPN)

MPLS - label distribution using MP-BGP

MPLS - label

MPLS - multiarea OSPF in the core

MPLS - network redundancy

MPLS - what is fate sharing

MPLS - what is seamless MPLS

MPLS 6PE uses two labels in the data plane

MPLS Bytes Label Switched in the LFIB

MPLS Customer Edge Router

MPLS L3VPN Inter-AS Options

MPLS LDP Label Filtering

MPLS LDP Session Protection

MPLS LDP Targeted Hellos

MPLS LSR ID