Explain the following configuration of Huawei S2700 series network line by line and also why it is done in the context of whole configuration:
sysname SEC-PWR-01
#
vlan batch 2 to 300 1000
#
authentication-profile name default_authen_profile
authentication-profile name dot1x_authen_profile
authentication-profile name mac_authen_profile
authentication-profile name portal_authen_profile
authentication-profile name dot1xmac_authen_profile
authentication-profile name multi_authen_profile
#
clock timezone Asia/Kathmandu add 05:45:00
#
radius-server template default
#
free-rule-template name default_free_rule
#
portal-access-profile name portal_access_profile
#
vlan 1000
 description VLAN-For-Camera-from-P612E-LAN
#
aaa
 authentication-scheme default
 authentication-scheme radius
  authentication-mode radius
 authorization-scheme default
 accounting-scheme default
 local-aaa-user password policy administrator
  password history record number 0
  password expire 0
 domain default
  authentication-scheme radius
  radius-server default
 domain default_admin
  authentication-scheme default
 local-user admin password irreversible-cipher $1a$jQIv2i}1e2$7r&p#ff^l9<"$t'yG<                                                                                        IYVqf#!zGp63\l8,/h)%$%$
 local-user admin privilege level 15
 local-user admin ftp-directory flash:/
 local-user admin service-type ssh http
#
ntp-service server disable
ntp-service ipv6 server disable
ntp-service unicast-server 192.168.13.101
#
interface Vlanif1
#
interface Vlanif20
 ip address 10.0.1.6 255.255.255.0
#
interface Vlanif1000
 ip address 192.168.25.101 255.255.255.0
#
interface Ethernet0/0/1
 port link-type access
 port default vlan 16
#
interface Ethernet0/0/2
 port link-type access
 port default vlan 16
#
interface Ethernet0/0/3
 port link-type access
 port default vlan 16
#
interface Ethernet0/0/4
 port link-type access
 port default vlan 16
#
interface Ethernet0/0/5
 port link-type access
 port default vlan 16
#
interface Ethernet0/0/6
 port link-type access
 port default vlan 16
#
interface Ethernet0/0/7
 port link-type access
 port default vlan 16
#
interface Ethernet0/0/8
 port link-type access
 port default vlan 16
#
interface Ethernet0/0/9
 port link-type access
 port default vlan 16
#
interface Ethernet0/0/10
 port link-type access
 port default vlan 16
#
interface Ethernet0/0/11
 port link-type access
 port default vlan 16
#
interface Ethernet0/0/12
 port link-type access
 port default vlan 16
#
interface Ethernet0/0/13
 port link-type access
 port default vlan 16
#
interface Ethernet0/0/14
 port link-type access
 port default vlan 16
#
interface Ethernet0/0/15
 port link-type access
 port default vlan 16
#
interface Ethernet0/0/16
 port link-type access
 port default vlan 16
#
interface GigabitEthernet0/0/1
 port link-type access
 port default vlan 16
#
interface GigabitEthernet0/0/2
 port link-type access
 port default vlan 16
#
interface GigabitEthernet0/0/3
 port link-type access
 port default vlan 16
#
interface GigabitEthernet0/0/4
 port link-type access
 port default vlan 16
#
interface GigabitEthernet0/0/5
 port link-type access
 port default vlan 16
#
interface GigabitEthernet0/0/6
 port link-type access
 port default vlan 16
#
interface GigabitEthernet0/0/7
 port link-type access
 port default vlan 16
#
interface GigabitEthernet0/0/8
 port link-type access
 port default vlan 1000
#
interface GigabitEthernet0/0/9
 port link-type access
 port default vlan 16
#
interface GigabitEthernet0/0/10
 port link-type access
 port default vlan 16
#
interface GigabitEthernet0/0/11
 port link-type access
 port default vlan 16
#
interface GigabitEthernet0/0/12
#
interface NULL0
#
ip route-static 192.168.8.0 255.255.255.0 10.0.1.2
ip route-static 192.168.13.0 255.255.255.0 10.0.1.1
#
snmp-agent
snmp-agent local-engineid 800007DB0344674762D4FB
snmp-agent community write cipher %^%#`:Q5Y$HTDLG(+%ZSBgR8W|NNN#y`L*AeB3HjM=sGwn                                                                                        K6$;XZa19"\~A[_4=4&0ta*6l8o<sJnP5%j~d+%^%# mib-view View_ALL
snmp-agent community read cipher %^%#l{\*,G,>12FgHd6*L=}TR#}`~#RpX!u({O21J_mW,@(                                                                                        ~+oRI(RSU%;Oi7N.84t8a!Bl.w=Mc2%Uf6\B)%^%# mib-view View_ALL
snmp-agent sys-info version all
snmp-agent target-host trap address udp-domain 192.168.8.100 params securityname                                                                                         cipher %^%#)&)w<+0(>!,"gU3wH)L(WsPAYP\t|"~y:M,;@D7X%^%# v2c private-netmanager                                                                                         ext-vb
snmp-agent mib-view included View_ALL iso
snmp-agent trap source Vlanif20
snmp-agent extend error-code enable
snmp-agent trap enable
#
stelnet ipv4 server enable
stelnet ipv6 server enable
#
user-interface con 0
 authentication-mode none
user-interface vty 0 4
 authentication-mode aaa
user-interface vty 16 20
#
port-group 1
 group-member Ethernet0/0/1
 group-member Ethernet0/0/2
 group-member Ethernet0/0/3
 group-member Ethernet0/0/4
 group-member Ethernet0/0/5
 group-member Ethernet0/0/6
 group-member Ethernet0/0/7
 group-member Ethernet0/0/8
 group-member Ethernet0/0/9
 group-member Ethernet0/0/10
 group-member Ethernet0/0/11
 group-member Ethernet0/0/12
 group-member Ethernet0/0/13
 group-member Ethernet0/0/14
 group-member Ethernet0/0/15
 group-member Ethernet0/0/16
#
port-group 2
 group-member GigabitEthernet0/0/1
 group-member GigabitEthernet0/0/2
 group-member GigabitEthernet0/0/3
 group-member GigabitEthernet0/0/4
 group-member GigabitEthernet0/0/5
 group-member GigabitEthernet0/0/6
 group-member GigabitEthernet0/0/7
 group-member GigabitEthernet0/0/8
 group-member GigabitEthernet0/0/9
 group-member GigabitEthernet0/0/10
 group-member GigabitEthernet0/0/11
#
dot1x-access-profile name dot1x_access_profile
#
mac-access-profile name mac_access_profile
#
return