Connectivity Guide

Path source: I - internal, a - aggregate, c - confed-external,
r - redistributed/network, S - stale
Origin codes: i - IGP, e - EGP, ? - incomplete
Network Next Hop Metric LocPrf Weight Path
*>I 55::/64 172:16:1::2 0 0 0 100 200 300 400 i
*>I 55:0:0:1::/64 172:16:1::2 0 0 0 100 200 300 400 i
*>I 55:0:0:2::/64 172:16:1::2 0 0 0 100 200 300 400 i
Redistribute routes
Add routes from other routing instances or protocols to the BGP process. You can include OSPF, static, or directly connected routes in the
BGP process with the redistribute command.
• Include directly connected or user-congured (static) routes in ROUTER-BGP-AF mode.
redistribute {connected | static}
• Include specic OSPF routes in IS-IS in ROUTER-BGP-AF mode (1 to 65535).
redistribute ospf process-id
Disable redistributed routes
OS10(conf-router-bgp-af)# no redistribute ospf route-map ospf-to-bgp
Enable redistributed routes
OS10(conf-router-bgp-af)# redistribute ospf
Additional paths
The add-path command is disabled by default.
1 Assign an AS number in CONFIGURATION mode.
router bgp as-number
2 Enter a neighbor and IP address (A.B.C.D) in ROUTER-BGP mode.
neighbor ip-address
3 Enter Address Family mode in ROUTER-NEIGHBOR mode.
address-family {[ipv4 | ipv6] [unicast])
4 Allow the specied neighbor to send or receive multiple path advertisements in ROUTER-BGP mode. The count parameter controls
the number of paths that are advertised — not the number of paths received.
add-path [both | received | send] count
Enable additional paths
OS10(config)# router bgp 102
OS10(conf-router-bgp-102)# neighbor 32.1.1.2
OS10(conf-router-neighbor)# address-family ipv4 unicast
OS10(conf-router-bgp-neighbor-af)# add-path both 3
MED attributes
OS10 uses the MULTI_EXIT_DISC or MED attribute when comparing EBGP paths from the same AS. MED comparison is not performed in
paths from neighbors with dierent AS numbers.
1 Enable MED comparison in the paths from neighbors with dierent AS in ROUTER-BGP mode.
always-compare-med
452
Layer 3