264
|
Border Gateway Protocol IPv4 (BGPv4)
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Use the
clear ip bgp
command in EXEC Privilege mode to reset a BGP connection using BGP soft
reconfiguration.
When inbound soft reconfiguration is enabled on a neighbor and you enter the
clear ip bgp soft
in
command, the update database stored in the router is replayed and updates are reevaluated. The replay and
update process is triggered only if a route-refresh request is not negotiated with the peer. If a route-refresh
request is negotiated, BGP sends a request to the neighbor and receives all of the peer’s updates.
To use soft reconfiguration (or soft reset) without preconfiguration, both BGP peers must support the soft
route refresh capability, which is advertised in the open message sent when the peers establish a TCP
session. To determine whether a BGP router supports this capability, use the
show ip bgp neighbors
command. If a router supports the route refresh capability, the following message is displayed:
Received route refresh capability from peer.
If you specify a BGP peer group by using the
peer-group-name
argument, all members of the peer group
inherit the characteristic configured with this command.
The following example
(Figure 10-33)
shows how to enable inbound soft reconfiguration for the neighbor
10.108.1.1. All updates received from this neighbor are stored unmodified, regardless of the inbound
policy. When inbound soft reconfiguration is performed later, the stored information is used to generate a
new set of inbound updates.
Figure 10-33. Command example:
router bgp
Command Syntax
Command Mode
Purpose
neighbor
{
ipv4-address
|
ipv6-address
|
peer-group-name
}
soft-reconfiguration
inbound
CONFIG-ROUTER-
BGP
Enable inbound soft-reconfiguration for the
specified BGP neighbor. BGP stores all updates
received by the neighbor but does not reset the peer
session.
Entering this command starts the storage of updates on inbound routes,
which is required for inbound soft reconfiguration. Outbound BGP soft
reconfiguration does not require inbound soft reconfiguration to be enabled.
clear ip bgp { * |
as-number
|
ipv4-
neighbor-addr
|
ipv6-neighbor-addr
|
peer-group
name
} {ipv4 unicast |
ipv4
multicast
| ipv6 unicast} soft
[
in | out
]
EXEC Privilege
Clears and reapplies policies on:
*: All peers
as-number
: BGP routers that belong to the specified
AS
neighbor-addr
: BGP neighbor with specified IP
address
Type of routes to be reapplied:
ipv4 unicast
,
ipv4 multicast
, or
ipv6 unicast
in
: Reapplies only inbound policies
out
: Reapplies only outbound policies
FTOS>
router bgp 100
neighbor 10.108.1.1 remote-as 200
neighbor 10.108.1.1 soft-reconfiguration inbound
Summary of Contents for Force10 E300
Page 1: ...FTOS Configuration Guide FTOS 8 4 2 7 E Series TeraScale C Series S Series S50 S25 ...
Page 32: ...32 w w w d e l l c o m s u p p o r t d e l l c o m ...
Page 132: ...132 802 1X w w w d e l l c o m s u p p o r t d e l l c o m ...
Page 310: ...310 Configuration Replace and Rollback w w w d e l l c o m s u p p o r t d e l l c o m ...
Page 330: ...330 Dynamic Host Configuration Protocol w w w d e l l c o m s u p p o r t d e l l c o m ...
Page 402: ...402 High Availability w w w d e l l c o m s u p p o r t d e l l c o m ...
Page 462: ...462 Interfaces w w w d e l l c o m s u p p o r t d e l l c o m ...
Page 482: ...482 IPv4 Addressing w w w d e l l c o m s u p p o r t d e l l c o m ...
Page 506: ...506 IPv6 Addressing w w w d e l l c o m s u p p o r t d e l l c o m ...
Page 582: ...582 Layer 2 w w w d e l l c o m s u p p o r t d e l l c o m ...
Page 642: ...642 Multicast Source Discovery Protocol w w w d e l l c o m s u p p o r t d e l l c o m ...
Page 662: ...662 Multiple Spanning Tree Protocol w w w d e l l c o m s u p p o r t d e l l c o m ...
Page 690: ...690 Object Tracking w w w d e l l c o m s u p p o r t d e l l c o m ...
Page 754: ...754 PIM Dense Mode w w w d e l l c o m s u p p o r t d e l l c o m ...
Page 784: ...784 PIM Source Specific Mode w w w d e l l c o m s u p p o r t d e l l c o m ...
Page 800: ...800 Power over Ethernet w w w d e l l c o m s u p p o r t d e l l c o m ...
Page 876: ...876 Quality of Service w w w d e l l c o m s u p p o r t d e l l c o m ...
Page 892: ...892 Routing Information Protocol w w w d e l l c o m s u p p o r t d e l l c o m ...
Page 1006: ...1006 Simple Network Management Protocol w w w d e l l c o m s u p p o r t d e l l c o m ...
Page 1018: ...1018 SONET SDH w w w d e l l c o m s u p p o r t d e l l c o m ...
Page 1048: ...1048 Broadcast Storm Control w w w d e l l c o m s u p p o r t d e l l c o m ...
Page 1096: ...1096 Uplink Failure Detection UFD w w w d e l l c o m s u p p o r t d e l l c o m ...
Page 1098: ...1098 Upgrade Procedures w w w d e l l c o m s u p p o r t d e l l c o m ...
Page 1196: ...1196 C Series Debugging and Diagnostics w w w d e l l c o m s u p p o r t d e l l c o m ...
Page 1252: ...1252 Standards Compliance w w w d e l l c o m s u p p o r t d e l l c o m ...
Page 1262: ...1262 Index w w w d e l l c o m s u p p o r t d e l l c o m ...