Connectivity Guide

Supported Releases 10.3.0E or later
sender-side-loop-detection
Enables the sender-side loop detection process for a BGP neighbor.
Syntax
sender-side-loop-detection
Parameters None
Default Enabled
Command Mode ROUTER-BGP-NEIGHBOR-AF
Usage Information This command helps detect routing loops, based on the AS path before it starts advertising routes. To congure a
neighbor to accept routes use the neighbor allowas-in command. The no version of this command disables
sender-side loop detection for that neighbor.
Example (IPv4)
OS10(conf-router-bgp-102)# neighbor 3.3.3.1
OS10(conf-router-neighbor)# address-family ipv4 unicast
OS10(conf-router-bgp-neighbor-af)# sender-side-loop-detection
Example (IPv6)
OS10(conf-router-bgp-102)# neighbor 32::1
OS10(conf-router-neighbor)# address-family ipv6 unicast
OS10(conf-router-bgp-neighbor-af)# no sender-side-loop-detection
Supported Releases 10.3.0E or later
show ip bgp
Displays information that BGP neighbors exchange.
Syntax
show ip bgp [vrf vrf-name] ip-address/mask
Parameters
• vrf vrf-name — (OPTIONAL) Enter vrf and then the name of the VRF to view route information
corresponding to that VRF.
• ip-address/mask — Enter the IP address and mask in A.B.C.D/x format.
Default Not congured
Command Mode EXEC
Usage Information None
Example
OS10# show ip bgp 1.1.1.0/24
BGP routing table entry for 1.1.1.0/24
Paths: (1 available, table Default-IP-Routing-Table.)
Received from :
3.1.1.1(3.3.3.33) Best
AS_PATH : 100
Next-Hop : 3.1.1.1, Cost : 0
Origin INCOMPLETE, Metric 0, LocalPref 100, Weight 0, confed-external
Route-reflector origin : 0.0.0.0
Supported Releases 10.3.0E or later
Layer 3 483