
C
HAPTER
51
| IP Routing Commands
Border Gateway Protocol (BGPv4)
– 1842 –
C
OMMAND
U
SAGE
◆
A cluster of clients will usually have a single route reflector (RR). In
that case, the cluster can be identified by the BGP Identifier of the RR.
However, this represents a single point of failure. This command is used
to designate multiple route reflectors used within the same cluster so
that they can recognize updates from other peer route reflectors and
discard them to prevent loopbacks.
◆
All the route reflectors in the same cluster should be fully meshed and
all of them configured with identical sets of client and non-client peers.
◆
A route reflector uses the non-transitive cluster-list attribute to avoid
routing loops. A cluster-list is a sequence of cluster IDs the route has
passed through. When a RR reflects a route from its clients to non-
client peers, and vice versa, it appends this ID to the cluster list. Using
this attribute, an RR can determine if routing information has looped
back to the same cluster due to mis-configuration. If the local cluster
ID is found in the cluster list, the advertisement is ignored.
E
XAMPLE
Console(config-router)#bgp cluster-id 192.168.0.0
Console(config-router)#
R
ELATED
C
OMMANDS
bgp client-to-client reflection (1840)
bgp confederation
identifier
This command configures the identifier for a confederation containing
smaller multiple internal autonomous systems, and declares this router as
a member of the confederation. Use the
no
form to remove the
confederation identifier.
S
YNTAX
bgp confederation identifier
as-number
no
bgp confederation identifier
as-number
– Autonomous system number which identifies this
router as a member of the specified domain, and tags routing
messages passed to other BGP routers with this number.
(Range: 1-4294967295)
C
OMMAND
M
ODE
Router Configuration
D
EFAULT
S
ETTING
No confederation identifier is configured.
C
OMMAND
U
SAGE
◆
BGP confederations are used to reduce the requirement for fully
meshed connections between iBGP peers in the same AS. It works by
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...