
C
HAPTER
51
| IP Routing Commands
Border Gateway Protocol (BGPv4)
– 1837 –
separated by one colon. The 2-byte network number can range
from 0 to 65535.
One or more community numbers can be entered, separated by
a space. Up to 3 community numbers are supported.
100-500 – Expanded community list number that identifies one or
more groups of communities.
expanded
community-list-name
– Name of expanded access list.
(Maximum length: 32 characters, no spaces or other special
characters)
regular-expression
– Regular expression indicating the community
list number or name. Syntax complies with the IEEE POSIX Basic
Regular Expressions (BRE) standard.
C
OMMAND
M
ODE
Global Configuration
D
EFAULT
S
ETTING
No extended community lists are defined.
C
OMMAND
U
SAGE
◆
Standard community lists are used to configure well-known
communities or community numbers. Expanded community lists are
used to filter communities using a regular expression.
◆
When multiple values are entered in the same community list, they
form a logical AND condition. When multiple values are configured in
separate community lists, the form a logical OR condition, where the
first list that matches a condition is processed.
◆
If the criteria specified for a community list is matched, then the
deny/permit condition is applied to the routing message.
◆
If a permit value is applied to a community list, the filter will implicitly
deny other community values.
◆
The route target (RT) attribute is used to identify sites that may receive
routes tagged with a specific route target. Using this attribute allows
that route to be placed in per-site forwarding tables used for routing
traffic received from the corresponding sites.
◆
The site of origin (SOO) attribute is used to identify the site from which
the provider edge (PE) router learned the route. All routes learned from
a particular site are assigned the same site of origin attribute, no
matter if a site is connected to a single PE router or multiple PE routers.
Filtering based on this extended community attribute can prevent
routing loops from occurring when a site is multi-homed.
◆
Use this command in conjunction with the
to filter
route updates sent to or received from a neighbor, or with the
route map command to implement a more
comprehensive filter for policy-based routing.
Содержание ECS4660-28F
Страница 1: ...Management Guide www edge core com ECS4660 28F Layer 3 Gigabit Ethernet Switch...
Страница 2: ......
Страница 4: ......
Страница 12: ...ABOUT THIS GUIDE 12...
Страница 64: ...CONTENTS 64...
Страница 90: ...TABLES 90...
Страница 92: ...SECTION I Getting Started 92...
Страница 122: ...SECTION II Web Configuration 122 Multicast Routing on page 825...
Страница 148: ...CHAPTER 3 Using the Web Interface Navigating the Web Browser Interface 148...
Страница 224: ...CHAPTER 5 Interface Configuration VLAN Trunking 224 Figure 68 Configuring VLAN Trunking...
Страница 262: ...CHAPTER 6 VLAN Configuration Configuring VLAN Translation 262...
Страница 304: ...CHAPTER 9 Congestion Control Automatic Traffic Control 304...
Страница 340: ...CHAPTER 11 Quality of Service Attaching a Policy Map to a Port 340...
Страница 452: ...CHAPTER 13 Security Measures DHCP Snooping 452...
Страница 740: ...CHAPTER 17 IP Services Configuring the PPPoE Intermediate Agent 740...
Страница 866: ...CHAPTER 21 Multicast Routing Configuring PIMv6 for IPv6 866...
Страница 882: ...CHAPTER 22 Using the Command Line Interface CLI Command Groups 882...
Страница 1024: ...CHAPTER 26 Remote Monitoring Commands 1024...
Страница 1030: ...CHAPTER 27 Flow Sampling Commands 1030...
Страница 1088: ...CHAPTER 28 Authentication Commands PPPoE Intermediate Agent 1088...
Страница 1162: ...CHAPTER 29 General Security Measures Configuring Port based Traffic Segmentation 1162...
Страница 1186: ...CHAPTER 30 Access Control Lists ACL Information 1186...
Страница 1214: ...CHAPTER 31 Interface Commands Transceiver Threshold Configuration 1214...
Страница 1238: ...CHAPTER 33 Port Mirroring Commands RSPAN Mirroring Commands 1238...
Страница 1258: ...CHAPTER 34 Congestion Control Commands Automatic Traffic Control Commands 1258...
Страница 1270: ...CHAPTER 36 UniDirectional Link Detection Commands 1270...
Страница 1276: ...CHAPTER 37 Address Table Commands 1276...
Страница 1336: ...CHAPTER 39 ERPS Commands 1336...
Страница 1386: ...CHAPTER 40 VLAN Commands Configuring Voice VLANs 1386...
Страница 1406: ...CHAPTER 41 Class of Service Commands Priority Commands Layer 3 and 4 1406...
Страница 1424: ...CHAPTER 42 Quality of Service Commands 1424...
Страница 1536: ...CHAPTER 43 Multicast Filtering Commands MLD Proxy Routing 1536...
Страница 1602: ...CHAPTER 45 CFM Commands Delay Measure Operations 1602...
Страница 1624: ...CHAPTER 47 Domain Name Service Commands 1624...
Страница 1646: ...CHAPTER 48 DHCP Commands DHCP Server 1646...
Страница 1974: ...SECTION IV Appendices 1974...
Страница 1980: ...APPENDIX A Software Specifications Management Information Bases 1980...
Страница 2020: ...ECS4660 28F E102013 ST R03 149100000140A...