Cisco Config Viewer

コンフィグ内のテキストを選択することでコマンドをGoogle検索。 IPアドレスをグローバル、プライベート、サブネットマスク毎に色分けし、主要コマンドにも配色。アクセスリスト毎に区切り線を表示。
Cisco Config Viewer

IPアドレスを選択すればアドレス範囲を計算します。
ビット部分をクリックすることでIPアドレスおよびサブネットの変更や確認が可能。
IP Address Calculator

ACLのWild mask (Don't care bit)の計算も出来ます。
Wild Mask (Don't care bit) Calculator for Cisco access-list

コンフィグ内のInterface, Routing, Access-listへジャンプ。
Cisco Config Viewer

# これはサンプルコンフィグです。

Building configuration...

Current configuration : 2718 bytes
!
! No configuration change since last restart
!
version 12.4
service tcp-keepalives-in
service tcp-keepalives-out
service timestamps debug datetime msec localtime show-timezone
service timestamps log datetime msec localtime show-timezone
service password-encryption
service sequence-numbers
no service password-encryption
!
hostname CISCO_SAMPLE
!
boot-start-marker
boot-end-marker
!
logging buffered 16384 debugging
logging console warnings
enable password 7 03055F1D030135
!
aaa new-model
!
!
aaa authentication login default local
aaa authentication login CONSOLE none
aaa authorization exec default none
!
aaa session-id common
clock timezone JST 9
ip cef
!
ip dhcp pool CISCO
 domain-name cisco
 dns-server 123.123.123.123
 netbios-name-server 123.123.123.123
 netbios-node-type b-node
 default-router 123.123.123.123
 lease infinite
!
ip name-server 192.168.4.100
ip name-server 192.168.4.158
!
!
no ip domain lookup
ip auth-proxy max-nodata-conns 3
ip admission max-nodata-conns 3
!
!
!
username admin password 7 070E255A4B070D
username test password 7 09584B1A0D
username cisco password 7 04490A0C0A32441C
archive
 path flash:/LOGS/$h.cfg
 write-memory
 time-period 1440
!
!
ip telnet source-interface Loopback0
ip ssh source-interface Loopback0
!
!
!
!
interface Loopback0
 ip address 10.2.80.101 255.255.255.255
 ip nat inside
 ip virtual-reassembly
!
interface Serial0/0
 description "SAMPLE"
 bandwidth 512
 ip address 192.168.0.1 255.255.255.0
!
interface Serial0/1
 description "SAMPLE"
 bandwidth 512
 ip address 172.16.10.1 255.255.0.0
!
interface FastEthernet0/0
 description "SAMPLE"
 ip address 10.2.64.17 255.255.255.248
 ip nat inside
 ip virtual-reassembly
 speed 100
 full-duplex
!
interface FastEthernet0/1
 description "SAMPLE"
 ip address 192.2.100.82 255.255.255.248
 ip access-group INTERNET in
 ip nat outside
 ip virtual-reassembly
 speed 100
 full-duplex
 no cdp enable
!
interface Vlan1
 description "SAMPLE"
 ip address 192.168.0.253 255.255.255.0
 ip access-group 100 in
 ip nat inside
 ip virtual-reassembly
 ip route-cache flow
 ip tcp adjust-mss 1412
!
router ospf 1
 log-adjacency-changes
 network 10.0.0.0 0.255.255.255 area 0
 default-information originate
!
router bgp 65002
 no synchronization
 bgp log-neighbor-changes
 neighbor 192.2.100.81 remote-as 65500
 no auto-summary
!
ip forward-protocol nd
ip route 0.0.0.0 0.0.0.0 123.123.123.123
ip route 203.12.12.12 0.0.0.0 123.123.123.123
ip route 192.168.0.0 255.255.255.0 192.168.1.1
ip route 172.16.0.0 255.255.0.0 192.168.1.1
ip route 10.0.0.0 255.0.0.0 192.168.1.1
!
!
ip http server
no ip http secure-server
ip nat pool ISP1 192.2.100.83 192.2.100.83 prefix-length 29
ip nat inside source list INTERNAL-NETWORKS pool ISP1 overload
!
ip access-list standard INTERNAL-NETWORKS
 permit 10.12.0.0 0.0.255.255
!
ip access-list extended INTERNET
 deny   ip 10.0.0.0 0.255.255.255 any
 deny   ip 172.16.0.0 0.15.255.255 any
 deny   ip 192.168.0.0 0.0.255.255 any
 permit ip 60.1.1.0 0.0.0.255 any
 permit ip 192.2.100.0 0.0.0.7 any
 permit icmp 192.2.100.80 0.0.0.7 any
!
access-list 1 permit 192.168.1.0 0.0.0.255
access-list 100 deny   ip 192.168.0.0 0.0.25.255 192.168.0.0 0.0.255.255
access-list 100 permit ip 192.168.0.0 0.0.255.255 any
access-list 101 remark LAN
access-list 101 permit ip host 192.168.200.1 192.168.0.0 0.0.0.255
access-list 101 permit ip host 192.168.200.2 192.168.0.0 0.0.0.255
access-list 101 permit ip host 192.168.200.3 192.168.0.0 0.0.0.255
access-list 101 permit ip host 192.168.200.4 192.168.0.0 0.0.0.255
access-list 101 permit ip host 192.168.200.5 192.168.0.0 0.0.0.255
access-list 101 permit ip host 192.168.200.6 192.168.0.0 0.0.0.255
access-list 101 permit ip host 192.168.200.7 192.168.0.0 0.0.0.255
access-list 101 permit ip host 192.168.200.8 192.168.0.0 0.0.0.255
access-list 101 permit ip host 192.168.200.9 192.168.0.0 0.0.0.255
access-list 101 permit ip host 192.168.200.10 192.168.0.0 0.0.0.255
access-list 101 permit ip 192.168.0.0 0.0.255.255 192.168.0.0 0.0.0.255
access-list 101 permit ip 192.168.0.0 0.0.255.255 160.233.0.0 0.0.255.255
access-list 101 permit ip 192.168.1.0 0.0.0.255 any
access-list 101 permit ip host 192.168.1.50 any
access-list 101 permit icmp any any
access-list 101 deny   tcp any any eq smtp
access-list 101 deny   tcp any any eq www
access-list 101 deny   tcp any any eq 443
access-list 101 permit ip any any
access-list 101 permit ip any host 65.99.229.8
access-list 101 permit ip any host 27.54.86.225
access-list 150 permit ip 192.168.0.0 0.0.255.255 192.168.0.0 0.0.255.255
access-list 150 deny   tcp any any eq 3306
access-list 150 permit ip any any

!
!
control-plane
!
!
banner motd ^C

==================================
      Cisco Config Viewer
      Sample Configuration
==================================

^C
!
line con 0
 exec-timeout 120 0
 logging synchronous
 login authentication CONSOLE
line aux 0
line vty 0 4
 logging synchronous
 transport input telnet ssh
line vty 5 15
 logging synchronous
 transport input telnet ssh
!
scheduler allocate 20000 1000
ntp clock-period 17179847
ntp update-calendar
ntp server 192.2.100.1
ntp server 192.2.200.1
end

#sample

上記ボックス内にコンフィグを入力するかコンフィグファイルを参照してください。