neighbor peer-group passive
Enable passive peering on a BGP peer group, that is, the peer group does not send an OPEN message, but will respond 
to one.
C-Series, E-Series, S-Series, Z-Series, S4810
Syntax
neighbor peer-group-name peer-group passive [limit sessions]
To delete a passive peer-group, use the no neighbor peer-group-name peer-
group passive command.
Parameters
peer-group-name
Enter a text string up to 16 characters long as the name of the peer 
group.
limit (Optional, S4810 only) Enter the keyword limit to constrain the 
numbers of sessions for this peer-group. The range is 2 to 256. The 
default is 
256.
Defaults Not configured.
Command Modes ROUTER BGP
Command History
Version 8.3.11.1 Introduced on the Z9000.
Version 8.3.8.0 Introduced the limit keyword on the S4810.
Version 8.3.7.0 Introduced on the S4810.
Version 7.8.1.0 Introduced on the S-Series.
Version 7.7.1.0 Introduced on the C-Series.
Usage 
Information
After you configure a peer group as passive, you must assign it a subnet using the neighbor 
soft-reconfiguration inbound
 command.
For passive eBGP limits, the Remote AS must be different from the AS for this neighbor.
Related 
Commands
neighbor soft-reconfiguration inbound– assigns a subnet to a dynamically-configured BGP 
neighbor.
neighbor remote-as – assigns an indirectly connected AS to a neighbor or peer group.
neighbor remote-as
Create and specify the remote peer to the BGP neighbor.
C-Series, E-Series, S-Series, Z-Series, S4810
Syntax
neighbor {ip-address | peer-group-name} remote-as number
To delete a remote AS entry, use the no neighbor {ip-address | peer-group-
name} remote-as number command.
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