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香港特区参与2010年上海世博会节目
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香港特区参与2010年上海世博会节目
A Hong Kong SAR Programme for Expo 2010 Shanghai
交通银行呈献
Bank of Communications brings to you
HONG KONG PHILHARMONIC ORCHESTRA
BEETHOVEN 9
艺术总监兼总指挥
Artistic Director and Chief Conductor Edo de Waart
艾度.迪华特
六SAT 19:30
上海东方艺术中心音乐厅
Shanghai Oriental Art Center Concert Hall
唐英年先生献词
Message from Mr Henry Tang
香港特别行政区政务司司长 The Chief Secretary for Administration 香港特区参与2010年上海世界博览会 督导委员会主席
Chairman Steering Committee for HKSAR's Participation in Shanghai Expo 2010
香港参与上海世博,是振奋人心的大事.我们将借助这个举世瞩目的大舞台,向海内外 观众呈现香港的动感活力. 为时半年的世博会期间,香港将献上丰富多采的文化盛宴,展示香港表演艺术家的才艺 创意.届时还将举办两项美术展览. 文化活动节目丰富,形式多样.通过粤剧,爵士乐,实验剧场,流行音乐,现代舞蹈,及 香港管弦乐团今晚演奏的古典音乐会等演出节目,观众可以欣赏到香港享负盛名的艺术家 和崭露头角的新星的精彩表演. 贯穿这一系列表演的主旋律,将是香港这座城市自强不息,追求卓越的特质. 我深信,我们的文化使者会让香港引以为荣.在此预祝他们在上海的演出圆满成功.
Hong Kong is excited to be taking part in Shanghai Expo and looking forward to sharing the vibrancy of our city with visitors from around the country and the world during this mega global event. Over the six-month Expo period Hong Kong will stage a wide range of cultural events to showcase the talent and creativity of our performing arts groups. Two art exhibitions are also planned. The varied programme covers a diversity of disciplines including Cantonese Opera, jazz, experimental theatre, pop, modern dance and the classical music performance by the Hong Kong Philharmonic that you will enjoy tonight. Audiences will be treated to performances and works by some of Hong Kong's most well-known and respected cultural talents, as well as the next generation of young and emerging stars. In all of this one common trait will also be evident C the commitment to excellence and quality that is a defining characteristic of Hong Kong and its people. I am sure that our cultural ambassadors will do us proud, and that everyone in Hong Kong will join me in wishing them all the best for their Shanghai season.
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Border Gateway Protocol (BGP) is one of the key protocols to use to
achieve Internet connection redundancy. When you connect your network to two
different Internet service providers (ISPs), it is called
multihoming. Multihoming provides redundancy and network
optimization. It selects the ISP which offers the best path to a resource. When
you are running BGP with more than one service provider, you run the risk that
your autonomous system (AS) will become a transit AS. This causes Internet
traffic to pass through your AS and potentially consume all of the bandwidth
and resources on the CPU of your router. This document addresses this issue,
with appropriate configuration examples.
Ensure that you have knowledge of these topics before you attempt this
configuration:
The information in this document is based on Cisco 2500 Series Routers
that run Cisco IOS& Software Release
The information in this document was created from the devices in a
specific lab environment. All of the devices used in this document started with
a cleared (default) configuration. If your network is live, make sure that you
understand the potential impact of any command.
for more information on document
conventions.
If you want to receive the full Internet routing table, use the
on your local router (Router A in
the examples in this document).
If you want to receive routes that are directly connected to your
service providers, but use default routes to the rest of the Internet, try the
If you want to receive only default routes from the directly connected
service providers, use the
For more information about the regular expressions used in the
configurations in this document, refer to
In this section, you are presented with the information to configure
the features described in this document.
Note:&Use the
( customers only)
to find more information on the
commands used in this document.
This document uses this network setup:
In that network diagram, 1.0.0.0/8 and 2.0.0.0/8 are advertised by AS
300 to the outside.
The following configuration allows Router A to peer with BGP speakers
in other autonomous systems. The route-map localonly
allows only the locally generated routes to be advertised to both of the
service providers. In other words, they filter the Internet routes from one
service provider that go back to the other service provider. This prevents the
risk that your autonomous system will become a transit AS for Internet
Note:&Cisco recommends 1 GB of memory for the entire Internet routing table
from a single peer.
Current configuration:
router bgp 300
network 1.0.0.0
network 2.0.0.0
neighbor 10.10.10.10 remote-as 100
neighbor 10.10.10.10 route-map localonly out
!--- Outgoing policy route-map that filters routes to service provider A (SP-A).
neighbor 20.20.20.20 remote-as 200
neighbor 20.20.20.20 route-map localonly out
!--- Outgoing policy route-map that filters routes to service provider B (SP-B).
This AS-Path access list only permits locally originated BGP
ip as-path access-list 10 permit ^$
This is an example of a route map that uses that AS-Path access list to
filter the routes advertised to the external neighbors in the service provider
route-map localonly permit 10
match as-path 10
Current configuration:
router bgp 300
network 1.0.0.0
network 2.0.0.0
neighbor 10.10.10.10 remote-as 100
neighbor 10.10.10.10 route-map localonly out
!--- Outgoing policy route-map that filters routes to SP-A.
neighbor 10.10.10.10 route-map as100only in
!--- Incoming policy route-map that filters routes from SP-A.
neighbor 20.20.20.20 remote-as 200
neighbor 20.20.20.20 route-map localonly out
!--- Outgoing policy route-map that filters routes to SP-B.
neighbor 20.20.20.20 route-map as200only in
!--- Incoming policy route-map that filters routes from SP-B.
Because you only want to accept routes that are directly connected to
the service providers, you must filter the routes that they send to you, as
well as the routes that you advertise. This access list and route map permit
only local use it to filter outbound routing
ip as-path access-list 10 permit ^$
!--- Configuring the as-path access-list 10 as
!--- IP as-path access-list 10 permit ^$, means that the router
!--- will only send the prefixes which are generated locally in
!--- AS 300 and not from any other AS.
route-map localonly permit 10
match as-path 10
This access list and route map filter out anything that is not sourced
within the first serv use it to filter the routes that are
learned from service provider A (SP-A).
ip as-path access-list 20 permit ^100$
route-map as100only permit 10
match as-path 20
This access list and route map filter out anything that is not sourced
within the second serv use it to filter the routes that
are learned from service provider B (SP-B).
ip as-path access-list 30 permit ^200$
route-map as200only permit 10
match as-path 30
You also need two default routes that are distributed back into the
rest of your network, one pointed to each of the service provider entry
ip route 0.0.0.0 0.0.0.0 10.10.10.10
ip route 0.0.0.0 0.0.0.0 20.20.20.20
Current configuration:
router bgp 300
network 1.0.0.0
network 2.0.0.0
neighbor 10.10.10.10 remote-as 100
neighbor 10.10.10.10 route-map localonly out
!--- Outgoing policy route-map that filters routes to SP-A.
neighbor 10.10.10.10
prefix-list
neighbor 20.20.20.20 remote-as 200
neighbor 20.20.20.20 route-map localonly out
!--- Outgoing policy route-map that filters routes to SP-B.
neighbor 20.20.20.20 prefix-list
ip prefix-list
seq 5 permit 0.0.0.0/0
!--- Prefix list to allow only default route updates.
Because you want Router A to receive only default routes and no other
networks from SP-A and SP-B, you must permit only the default route and deny
all other BGP updates. Use this prefix list to allow only the default route
update 0.0.0.0/0 and to deny all other BGP updates on Router A:
ip prefix-list ABC seq 5 permit 0.0.0.0/0
Apply that prefix list on the inbound updates on individual BGP
neighbors in this way:
neighbor 10.10.10.10 prefix-list ABC in
neighbor 20.20.20.20 prefix-list ABC in
For more information on how to configure a prefix list, refer to the
section of
For explanations of what each command does, refer to
Use this section to confirm that your configuration works
( customers only)
(OIT) supports certain
show commands. Use the OIT to view an analysis of
show command output.
You can use the
commands to check the IP routing table and BGP
routing table entries.
There is currently no specific troubleshooting information available
for this configuration.
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for information on conventions used in this document.
Document ID: 23675