How to interpret the bgp next hop codes -

[tyaguvg]

Can someone help me to understand the interpretation of next hop codes?

For ex,

In the below

Nexthop codes: @NNN nexthop's vrf id, < announce-nh-self

I can understand the "<" but how to interpret the @NNN?

Network Next Hop Metric LocPrf Weight Path
Route Distinguisher: 20.0.0.1:2
*>i20.0.0.1/32 100.0.0.1 0 100 0 ?
UN=100.0.0.1 EC{100:100} label=100 type=bgp, subtype=0

from the above line of output;

I can understand the "EC" as extended community
but what is the meaning of "UN"?

ibr2-lab2# show ip bgp ipv4 vpn
BGP table version is 125, local router ID is 11.0.15.3, vrf id 0
Default local pref 100, local AS 100
Status codes: s suppressed, d damped, h history, * valid, > best, = multipath,
i internal, r RIB-failure, S Stale, R Removed
Nexthop codes: @NNN nexthop's vrf id, < announce-nh-self
Origin codes: i - IGP, e - EGP, ? - incomplete
RPKI validation codes: V valid, I invalid, N Not found
Network Next Hop Metric LocPrf Weight Path
Route Distinguisher: 20.0.0.1:2
*>i20.0.0.1/32 100.0.0.1 0 100 0 ?
UN=100.0.0.1 EC{100:100} label=100 type=bgp, subtype=0
*>i20.0.0.11/32 100.0.0.1 0 100 0 ?
UN=100.0.0.1 EC{100:100} label=100 type=bgp, subtype=0
*>i100.1.1.0/24 100.0.0.1 0 100 0 ?
UN=100.0.0.1 EC{100:100} label=100 type=bgp, subtype=0
Route Distinguisher: 20.0.0.2:2
20.0.0.2/32 0.0.0.0@8< 0 32768 i
UN=0.0.0.0 EC{100:100} label=80 type=bgp, subtype=5
*> 0.0.0.0@8< 0 32768 ?
UN=0.0.0.0 EC{100:100} label=80 type=bgp, subtype=5
20.0.0.22/32 0.0.0.0@8< 0 32768 i
UN=0.0.0.0 EC{100:100} label=80 type=bgp, subtype=5
*> 0.0.0.0@8< 0 32768 ?
UN=0.0.0.0 EC{100:100} label=80 type=bgp, subtype=5
*> 100.1.2.0/24 0.0.0.0@8< 0 32768 ?
UN=0.0.0.0 EC{100:100} label=80 type=bgp, subtype=5
Displayed 6 routes and 8 total paths
ibr2-lab2#

Thank you

[ton31337]

@NNN is the VRF id, like here 0.0.0.0@8<, 8 is the VRF id.

[tyaguvg]

Thank you for your help.

Can you please help me to get the meaning of "UN" in a route as shown below?

*>i20.0.0.1/32 100.0.0.1 0 100 0 ?
UN=100.0.0.1 EC{100:100} label=100 type=bgp, subtype=0

Thank you.

[ton31337]

unicast nexthop

[tyaguvg]

thanks a lot for your help.

One last request on this thread if you don't mine please.

@NNN is the VRF id, like here 0.0.0.0@8<, 8 is the VRF id.

In the above, is 0.0.0.0 a router-id? if not, what's that? or is it stating the next-hop@vrf-id?

Thank you

[tyaguvg]

Hi,

Can u pls check my request and help me to clarify?

Thank you