Cisco Notification Service 思科主動通知服務

如果想要知道 Cisco 相關的:軟體更新、安全性公告、Bug,以往都需要口語相傳,不然就要時常逛 cisco.com,所以往往會有時間的落差。Cisco 針對這樣的需求推出了主動通知服務 Cisco Notification Service,可以利用 E-mail 或 RSS 的方式主動通知用戶關心的訊息,讓用戶可以迅速決定如何進行下一步。

如何使用 Cisco Notification Service 呢?

一、進入 Cisco Notification Service:

1. 可使用 Cisco Notification Service 連結,直接進入。

2. 或是先到 www.cisco.com,再依照下面圖示進入。

螢幕快照_2013-04-24_下午12.33.49

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Cisco IOS 小技巧

1. 在每個 show 指令輸出結果前加上 CPU utilization 和時間

C2821(config)#line vty 0 4
C2821(config-line)#exec prompt timestamp
C2821(config-line)#end
C2821#show cdp
Load for five secs: 1%/0%; one minute: 3%; five minutes: 3%
Time source is NTP, 15:42:24.997 CST Tue Jan 18 2011

Global CDP information:
Sending CDP packets every 60 seconds
Sending a holdtime value of 180 seconds
Sending CDPv2 advertisements is  enabled
C2821#

2. 將逃脫字元由 Ctrl-Shift-6-6-x 改成其他組合
如果覺得原來的 Ctrl-Shift-6-6-x 太麻煩,可以改掉(下面的例子改成 Ctrl-C):
 

C2821#show terminal
Line 515, Location: "", Type: "XTERM-COLOR"
Length: 24 lines, Width: 80 columns
Baud rate (TX/RX) is 9600/9600
Status: PSI Enabled, Ready, Active, No Exit Banner, Automore On
Capabilities: none
Modem state: Ready
Group codes:    0
Special Chars: Escape  Hold  Stop  Start  Disconnect  Activation
               ^^x     none    -     -       none
Timeouts:      Idle EXEC    Idle Session   Modem Answer  Session   Dispatch
00:10:00        never                        none     not set
Idle Session Disconnect Warning
never
Login-sequence User Response
00:00:30
Autoselect Initial Wait
not set
Modem type is unknown.
Session limit is not set.
Time since activation: 00:25:37
Editing is enabled.
History is enabled, history size is 20.
DNS resolution in show commands is enabled
Full user help is disabled
Allowed input transports are telnet ssh.
Allowed output transports are lat pad telnet rlogin lapb-ta mop v120 ssh.
Preferred transport is lat.
No output characters are padded
No special data dispatching characters
 
 
C2821#conf t
Enter configuration commands, one per line.  End with CNTL/Z.
C2821(config)#line vty 0 4
C2821(config-line)#escape-character 3
C2821(config-line)#end
 
 
C2821#show terminal
Line 515, Location: "", Type: "XTERM-COLOR"
Length: 24 lines, Width: 80 columns
Baud rate (TX/RX) is 9600/9600
Status: PSI Enabled, Ready, Active, No Exit Banner, Automore On
Capabilities: none
Modem state: Ready
Group codes:    0
Special Chars: Escape  Hold  Stop  Start  Disconnect  Activation
^Cx none   -     -       none
Timeouts:      Idle EXEC    Idle Session   Modem Answer  Session   Dispatch
00:10:00        never                        none     not set
Idle Session Disconnect Warning
never
Login-sequence User Response
00:00:30
Autoselect Initial Wait
not set
Modem type is unknown.
Session limit is not set.
Time since activation: 00:25:49
Editing is enabled.
History is enabled, history size is 20.
DNS resolution in show commands is enabled
Full user help is disabled
Allowed input transports are telnet ssh.
Allowed output transports are lat pad telnet rlogin lapb-ta mop v120 ssh.
Preferred transport is lat.
No output characters are padded
No special data dispatching characters
C2821#

 
 
"3" 是 Ctrl-C 的 ASCII 碼,其他組合的 ASCII 碼可以在這裡查詢。至於 "^Cx" 後面的 "x" 可以忽略,實際操作的時候按下 Ctrl-C 即可。

GNS3 for Mac 安裝

如果要在 Mac 上安裝 GNS 3 ,可以先到 http://www.gns3.net/download 上下載 Mac 的 dmg 檔案。

安裝之後,除了要指令 Cisco IOS 的檔案位置之外,還需要指令 dynamips 的路徑。不過,dynamips在哪裡呢?

其實,路徑就藏在 GNS 3 裡面。不需要再下載 dynamips!在 GNS 3 的 Preference 裡面,點選左邊的 “Dynamips” 之後,在 “Executable path”裡面貼上如下圖的路徑即可!

Cisco 發佈 IOS 15.0


Cisco 於 10/2 發佈了 IOS 15.0。

昨日在幫客戶查 IPv6 相關資料的時候,進到 Configuration Guide 的選擇頁面的時候,發現,怎麼出現了 IOS 15 M&T 的東西。起初以為是網頁寫錯了。把 12.5 寫成 15,畢竟直接從 12.4 跳到 15,實在非常不可思議。

ios15

不過,點進去之後,發現,真的是直接升級到 15.0 了(正確的版本: 15.0(1)M)。

在 Release Note 裡面,Cisco 說明了這次把之前很多 release 裡的功能一次整合進來,總共整合了 2000 項的功能。

詳情請參考:Release NotesNew and Changed Information

新增的功能有下列:

802.1P CoS Bit Set for PPP and PPPoE Control Frames
AAA Authorization and Authentication Cache
AAA Per-User Scalability
AAA Support for Greater than 8 Login and Exec Auth
AppleTalk Support Discontinuation
ATM Conditional Debug Support
ATM OAM Loopback Mode Detection
ATM OAM Traffic Reduction
ATM PVC F5 OAM Recovery Traps
ATM PVC Trap Enhancements for Segment and End AIS/RDI Failures
ATM QoS MIB
ATM VP Average Traffic Rate
BFD—Static Route Support
BFD—VRF Support
BFD—WAN Interface Support (ATM, FR, POS, and Serial)
BGP Event Based VPN Import
BGP Per Neighbor Graceful Restart Configuration
BGP RT Changes Without PE-CE Neighbor Impact
Calling Station ID Attribute 31
Cisco Services for IPS on IOS
Cisco Unified Border Element Support for SRTP-RTP Internetworking
Configurable SIP Parameters via DHCP
CUBE Support for Configurable Pass-Through of SIP INVITE Parameters
CUBE Support for Generating Out-of-Dialog SIP OPTIONS Ping Messages to Monitor SIP Servers
DHCP Client Forcerenew Message
DHCP Client Option 121
Digitally Signed Cisco Software
DMVPN—Tunnel Health Monitoring and Recovery
DMVPN—Tunnel Health Monitoring and Recovery (Interface Line Control)
DMVPN—Tunnel Health Monitoring and Recovery (Syslog)
Embedded Event Manager (EEM) 3.1
Extended NAS-Port-Type and NAS-Port Support
Flexible NetFlow—Ingress VRF Support
Flexible Netflow—NBAR Application Recognition
FPM—Packaging, eTCDF and Full Packet Search Enhancements
G.722 Codec Support with SRST
GET VPN VRF-Aware GDOI on GM
H.323 Calling Without a Calling Number
IGMP Static Group Range Support
iLBC Codec on SCCP Analog FXS Gateway, Transcoding and Conferencing; G.722-64K for H.323 & SIP
IOS Firewall Support for TRP—Phase 2
IOS IPS with Lightweight Signatures
IP Multicast Load Splitting—Equal Cost Multipath (ECMP) Using S, G and Next-Hop
IPv6: Multicast Address Group Range Support
IS-IS—MPLS LDP Autoconfiguration
IS-IS—MPLS LDP Synchronization
IS-IS MIB
IS-IS Support for an IS-IS Instance per VRF for IP
Lawful Intercept (LI)
Licensing Support for IOS SSLVPNs
MLP LFI over ATM Configuration Scaling
MPLS VPN—BGP Local Convergence
MPLS VPN—Inter-AS Option AB
MTR Support for Multicast
Multi-Part SDP Support for NAT/FPG
Multicast Address Group Range Support
Multicast VRF (MVRF) awareness enables the MIB objects associated with these multicast MIBs to be queried and set for the individual MVRFs configured. In addition, MVRF awareness provides the capability to detect conditions for a trap inside of an MVRF and lookup the correct information for that MVRF; the traps would then be sent to the SNMP manager that is configured for that MVRF.
Multicast VPN Extranet Support
Multicast VPN Extranet VRF Select
NAS-Port ID Format C Enhancement:
NAT Static and Dynamic Route-Map Name-Sharing
NSSA-Only
Option to Disable Volume-Based IPsec Lifetime Rekey
OSPF Graceful Shutdown
OSPF TTL Security Check
OSPFv3 Fast Convergence—LSA and SPF Throttling
OSPFv3 Graceful Restart
PfR EIGRP mGRE DMVPN Hub-and-Spoke Support
PIM Stub
PIM Triggered Joins
PKI High Availability
PPP CLI Enhancement for L2CP Phase III
PPP-Max-Payload and IWF PPPoE Tag Support
PPPoE—Session Limiting on Inner QinQ VLAN
PPPoE Agent Remote ID and DSL Line Characteristics Enhancement
PPPoE Smart Server Selection
Preloaded Routes for Outgoing INVITE on CUBE Using Path Header in REGISTER, Service-Route in 200 OK Response to REGISTER and Outbound Proxy
RSVP Fast Local Repair
RSVP Interface-Based Receiver Proxy
RSVP—VRF Lite Admission Control
RTSP Live Streaming and Max Time for Cisco IOS VoiceXML Browser
Service Advertisement Framework (SAF)
SSHv2 Enhancements for RSA Keys
SSLVPN Client Side Certificate Based Authentication
Support for Adjustable Timers for REGISTRATION Refresh and Retries
Support for Distinctive Ringing on SCCP IOS Gateways
Support for FAC and Speed Dial to Voicemail Using Three Numerical Digits
Support for PAI, PPI, Privacy, P-Called-Party-ID and P-Associated-URI headers on Cisco Unified Border Element
Support for Selectively Using SIP: URI or Tel: URI Formats on Individual SIP Headers
Support on CUBE for Selective Filtering of Outgoing Provisional Responses
Suppress BGP Advertisement for Inactive Routes
Unified Communications Trusted Firewall Control Version II
Voice Quality Enhancements on Cisco Unified Border Element Platforms
VRF Aware RSVP Agent and Gateway
WCCP: VRF Support
Zone Based Firewall (ZBFW) Usability and Manageability Features
  • 802.1P CoS Bit Set for PPP and PPPoE Control Frames
  • AAA Authorization and Authentication Cache
  • AAA Per-User Scalability
  • AAA Support for Greater than 8 Login and Exec Auth
  • AppleTalk Support Discontinuation
  • ATM Conditional Debug Support
  • ATM OAM Loopback Mode Detection
  • ATM OAM Traffic Reduction
  • ATM PVC F5 OAM Recovery Traps
  • ATM PVC Trap Enhancements for Segment and End AIS/RDI Failures
  • ATM QoS MIB
  • ATM VP Average Traffic Rate
  • BFD—Static Route Support
  • BFD—VRF Support
  • BFD—WAN Interface Support (ATM, FR, POS, and Serial)
  • BGP Event Based VPN Import
  • BGP Per Neighbor Graceful Restart Configuration
  • BGP RT Changes Without PE-CE Neighbor Impact
  • Calling Station ID Attribute 31
  • Cisco Services for IPS on IOS
  • Cisco Unified Border Element Support for SRTP-RTP Internetworking
  • Configurable SIP Parameters via DHCP
  • CUBE Support for Configurable Pass-Through of SIP INVITE Parameters
  • CUBE Support for Generating Out-of-Dialog SIP OPTIONS Ping Messages to Monitor SIP Servers
  • DHCP Client Forcerenew Message
  • DHCP Client Option 121
  • Digitally Signed Cisco Software
  • DMVPN—Tunnel Health Monitoring and Recovery
  • DMVPN—Tunnel Health Monitoring and Recovery (Interface Line Control)
  • DMVPN—Tunnel Health Monitoring and Recovery (Syslog)
  • Embedded Event Manager (EEM) 3.1
  • Extended NAS-Port-Type and NAS-Port Support
  • Flexible NetFlow—Ingress VRF Support
  • Flexible Netflow—NBAR Application Recognition
  • FPM—Packaging, eTCDF and Full Packet Search Enhancements
  • G.722 Codec Support with SRST
  • GET VPN VRF-Aware GDOI on GM
  • H.323 Calling Without a Calling Number
  • IGMP Static Group Range Support
  • iLBC Codec on SCCP Analog FXS Gateway, Transcoding and Conferencing; G.722-64K for H.323 & SIP
  • IOS Firewall Support for TRP—Phase 2
  • IOS IPS with Lightweight Signatures
  • IP Multicast Load Splitting—Equal Cost Multipath (ECMP) Using S, G and Next-Hop
  • IPv6: Multicast Address Group Range Support
  • IS-IS—MPLS LDP Autoconfiguration
  • IS-IS—MPLS LDP Synchronization
  • IS-IS MIB
  • IS-IS Support for an IS-IS Instance per VRF for IP
  • Lawful Intercept (LI)
  • Licensing Support for IOS SSLVPNs
  • MLP LFI over ATM Configuration Scaling
  • MPLS VPN—BGP Local Convergence
  • MPLS VPN—Inter-AS Option AB
  • MTR Support for Multicast
  • Multi-Part SDP Support for NAT/FPG
  • Multicast Address Group Range Support
  • Multicast MIB VRF Support
  • Multicast VPN Extranet Support
  • Multicast VPN Extranet VRF Select
  • NAS-Port ID Format C Enhancement:
  • NAT Static and Dynamic Route-Map Name-Sharing
  • NSSA-Only
  • Option to Disable Volume-Based IPsec Lifetime Rekey
  • OSPF Graceful Shutdown
  • OSPF TTL Security Check
  • OSPFv3 Fast Convergence—LSA and SPF Throttling
  • OSPFv3 Graceful Restart
  • PfR EIGRP mGRE DMVPN Hub-and-Spoke Support
  • PIM Stub
  • PIM Triggered Joins
  • PKI High Availability
  • PPP CLI Enhancement for L2CP Phase III
  • PPP-Max-Payload and IWF PPPoE Tag Support
  • PPPoE—Session Limiting on Inner QinQ VLAN
  • PPPoE Agent Remote ID and DSL Line Characteristics Enhancement
  • PPPoE Smart Server Selection
  • Preloaded Routes for Outgoing INVITE on CUBE Using Path Header in REGISTER, Service-Route in 200 OK Response to REGISTER and Outbound Proxy
  • RSVP Fast Local Repair
  • RSVP Interface-Based Receiver Proxy
  • RSVP—VRF Lite Admission Control
  • RTSP Live Streaming and Max Time for Cisco IOS VoiceXML Browser
  • Service Advertisement Framework (SAF)
  • SSHv2 Enhancements for RSA Keys
  • SSLVPN Client Side Certificate Based Authentication
  • Support for Adjustable Timers for REGISTRATION Refresh and Retries
  • Support for Distinctive Ringing on SCCP IOS Gateways
  • Support for FAC and Speed Dial to Voicemail Using Three Numerical Digits
  • Support for PAI, PPI, Privacy, P-Called-Party-ID and P-Associated-URI headers on Cisco Unified Border Element
  • Support for Selectively Using SIP: URI or Tel: URI Formats on Individual SIP Headers
  • Support on CUBE for Selective Filtering of Outgoing Provisional Responses
  • Suppress BGP Advertisement for Inactive Routes
  • Unified Communications Trusted Firewall Control Version II
  • Voice Quality Enhancements on Cisco Unified Border Element Platforms
  • VRF Aware RSVP Agent and Gateway
  • WCCP: VRF Support
  • Zone Based Firewall (ZBFW) Usability and Manageability Features