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show bgp summary

show ip route bgp

...

titleshow bgp routes
collapsetrue

...

Image Added

https://www.juniper.net/documentation/us/en/software/session-smart-router/docs/config_bgp/#bgp-over-svr-bgposvr

https://www.juniper.net/documentation/us/en/software/session-smart-router/docs/config_reference_guide#routing-protocol-bgp


1- Create a Network interface ( loopback0 under routing instance )

2- Change the BGP router-id ( = loopback IP@ )

3- Add BGP neighbors ( = loopback address , AS# , use local-interface = loopback , + address-family= ipv4-unicast,  +   Router As Next Hop: True   and TTL=5 )


2- BGPoSVR: NH is the local loopback ( routing interface )

3- Redistribute service over BGP


Exercise 4BGP Over SVR


Step 1Configure Routing Interface ( loopback if )
bosdc1

Router: > Routing Instance

ADD Routing Interfaces

name rtg-int-bos   

IP address: 6.6.6.6

Image Added


show config running authority router bosdc1 routing default-instance interface rtg-int-bos


Code Block
titlerouting interface
collapsetrue
admin@node1.bosdc1# show config running authority router bosdc1 routing default-instance interface rtg-int-bos 

config

    authority

        router  bosdc1
            name     bosdc1

            routing  default-instance
4
100
type
24
 default-instance
24
0
0
 interface  rtg-int-bos
0
00:09:12
0
2.2.2.128
      name
4
       rtg-int-bos
200
21
21
0
ip-address  6.6.6.6
0
0
00:07:58
          exit
0
3.3.3.128
4
   exit
300
    exit
30
   exit
exit



show rib


Code Block
titleshow rib
collapsetrue
admin@node1.bosdc1# show
30
rib 
Fri
0 0 0 00:12:20 3 Total number of neighbors 3 internet-router# show ip route bgp 
2021-05-07 07:25:12 UTC
Codes: K - kernel route, C - connected, S - static, R - RIP,
       O - OSPF, I - IS-IS, B - BGP, E - EIGRP, N - NHRP,
       T - Table, v - VNC, V - VNC-Direct, A - Babel, D - SHARP,
       F - PBR,
       > - selected route, * - FIB route
.
B>*
.
128.128.128.1
. 
C>* 6.6.6.6/32
[20/1000000] via 3.3.3.128, dc
is directly connected, rtg-int-bos, 00
:04:27 B>* 128.128.128.128/32 [20/1000000] via 3.3.3.128, dc, 00:04:27 B>* 172.26.128.0/30 [20/0] via 3.3.3.128, dc, 00:05:49 internet-router# Exercise 3Routing Filters and PoliciesStep 1Add AS Path

show bgp

Code Block
titleprepend 200 200 200 200
collapsetrue
admin@node2.bosdc1# show bgp Thu 2021-05-06 20:55:10 UTC BGP table version is 12, local router ID is 3.3.3.128, vrf id 0 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 Network
:09:29


seabo1

name rtg-int-sea  

IP address: 7.7.7.7

dalbo2

name rtg-int-dal  

IP address: 8.8.8.8

Step 2Change Router ID to Routing Interface  ( BGP will use  loopback address)

for all the site:

bosdc1

seabo1

dalbo2

Router: > Routing Instance  > BGP

Image Added


Image Added


Image Added



Code Block
titlebgp config
collapsetrue
admin@node1.bosdc1# show config running authority router bosdc1 routing default-instance routing-protocol bgp 

config

    authority

        router  bosdc1
            name     bosdc1

            routing  default-instance
                type              default-instance
Next
Hop
Metric
LocPrf
Weight
Path
*> 1.1.1.0/24 
routing-protocol  bgp
3.3.3.1
               type
0
         bgp
0
6000
i
*>
2.2.2.0/24
3.3.3.1
   local-as        300
0
0
200
router-id
200
200
200
6000
i
*>
3
6.
3
6.
3
6.
0/24
6  <<<<<<<<<<<< new loopback if
3.3.3.1 
/ routing interface
0
     address-family  ipv4-unicast
0
6000
i
*>
128.128.128.1/32
0.0.0.0
1000000
  afi-safi  ipv4-unicast
32768
?
*>
128.128.128.128/32
                  network
0
172.
0
26.
0
128.0/30
1000000
32768
?
network-address
*>
 172.26.128.0/30
0.0.0.0

                            policy
0
 add-community
32768
i
Displayed
6
routes
and
6
total
paths
Completed in 0.16 seconds admin@node2.bosdc1# Step 2Add Community String

1- Create a Filter

2- Policy

2a- Condition

2b- Actions

SSR
Code Block
titleshow bgp router
collapsetrue
admin@node1.nycconductor1# show bgp router all 172.26.128.0
Thu 2021-05-06 21:05:58 UTC
WARNING: Targeting router 'all' may take a long time. Continue anyway? [y/N]: y
========
 bosdc1
========
BGP routing table entry for 172.26.128.0/30
Paths: (1 available, best #1, table Default-IP-Routing-Table)
  Advertised to non peer-group peers:
  3.3.3.1
  Local
    0.0.0.0 from 0.0.0.0 (3.3.3.128)
      Origin IGP, metric 0, localpref 100, weight 32768, valid, sourced, local, best
      Community: 128:128
      AddPath ID: RX 0, TX 11
      Last update: Thu May  6 21:05:08 2021
on FRR

show bgp ipv4 172.26.128.0/30

Code Block
titleshow bgp <route> on FRRouting
collapsetrue
internet-router# show bgp ipv4 172.26.128.0/30
BGP routing table entry for 172.26.128.0/30
Paths: (1 available, best #1, table Default-IP-Routing-Table)
  Advertised to non peer-group peers:
  1.1.1.128 2.2.2.128 3.3.3.128
  300
    3.3.3.128 from 3.3.3.128 (3.3.3.128)
      Origin IGP, metric 0, localpref 100, valid, external, best
      Community: 128:128
      AddPath ID: RX 0, TX 8
      Last update: Thu May  6 21:05:29 2021

internet-router#
Step 3Reject Community String

1- Create a Filter:   match-community

2- Policy

2a- Condition

2b- Actions

show bgp router dalbo2

show bgp router seabo1

Code Block
titleshow bgp router <router>
collapsetrue
admin@node1.nycconductor1# show bgp router dalbo2 Thu 2021-05-06 21:36:34 UTC ======== dalbo2 ======== BGP table version is 9, local router ID is 2.2.2.128, vrf id 0 Status codes: s suppressed, d damped, h history, * valid, > best, = multipath,
    exit
                    exit

                    neighbor        3.3.3.1
                        neighbor-address  3.3.3.1
                        neighbor-as       6000

                        neighbor-policy
                            inbound-policy  add-as-path
                        exit

                        address-family    ipv4-unicast
                            afi-safi  ipv4-unicast
                        exit
                    exit

                    redistribute    service
                        protocol  service
                    exit
                exit
            exit
        exit
    exit
exit

admin@node1.bosdc1#


Step 3Add BGP Over SVR Peers  ( Add Neighbors in DC )
bosdc1

Router: > Routing Instance:   > BGP

Image Added

AD: neighbors

Seattle:

BGP Neighbor Address: 7.7.7.7
Neighbor AS Number: 100

Local Address:  Source= Routing   +    Routing Interface= loopback0      (   rtg-int-bos )

BGP Multihop Settings: TTL or  Time-to-live Value: 255   ( for BGP Multihop Settings )

Address Families: Select bgp:ipv4-unicast.  (  +   Router As Next Hop: True   )


Dallas:

BGP Neighbor Address: 8.8.8.8
b. Neighbor AS Number: 200

Local Address:  Routing   +    Routing Interface:   rtg-int-bos

Time-to-live Value: 5   ( for BGP Multihop Settings )

Address Families. Select bgp:ipv4-unicast.  (  +   Router As Next Hop: True   )


Image Added


Image Added

neighbor

Image Added

Image Added

seabo1

BGP Neighbor Address: 6.6.6.6
Neighbor AS Number: 300
Local Address: rtg-int-sea (on Seattle) 

Local Address:  Routing   +    Routing Interface:   rtg-int-sea

Time-to-live Value: 5   ( for BGP Multihop Settings )

Address Families. Select bgp:ipv4-unicast.  (  +   Router As Next Hop: True   )


Image Added

dalbo2

BGP Neighbor Address: 6.6.6.6
b. Neighbor AS Number: 300
c. Local Address: rtg-int-dal (on Dallas)

Local Address:  Routing   +    Routing Interface:   rtg-int-dal

Time-to-live Value: 5   ( for BGP Multihop Settings )

Address Families. Select bgp:ipv4-unicast.  (  +   Router As Next Hop: True   )


Step 4Add BGP Over SVR Peers  ( Add Neighbors in Branches )
new Services

Authority >

Image Added



Image Added

new service routes

Authority > Router >

Image Added

New Tenant

Image Added

Step 5Verify BGP Over SVR


Routing table

RiB

+ Router

+ filter: BGP

Image Added






show bgp neighbors 7.7.7.7 received-routes

show bgp neighbors 7.7.7.7 advertised-routes


Code Block
titleadvertised and received routes
collapsetrue
admin@node1.bosdc1# show bgp neighbors 7.7.7.7 received-routes 
Fri 2021-05-07 08:55:23 UTC
BGP table version is 0, local router ID is 6.6.6.6, vrf id 0
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

   Network          Next Hop            Metric LocPrf Weight Path
*> 1.1.1.0/24       7.7.7.7                                0 100 6000 i
*> 2.2.2.0/24       7.7.7.7                                0 100 6000 i
*> 3.3.3.0/24       7.7.7.7                                0 100 6000 i
*> 7.7.7.7/32       7.7.7.7
i
internal,
r
RIB-failure,
S
Stale,
R
Removed
Nexthop
codes:
@NNN
0
nexthop's
100
vrf
300
id,
?
< announce-nh-self Origin codes: i - IGP, e - EGP, ? - incomplete
*> 8.8.8.8/32       7.7.7.7
Network
Next
Hop
           0
Metric
100
LocPrf
300
Weight Path
?
*>
1
128.128.
1
128.1
.0
/
24 2.2.2.1
32 7.7.7.7
0
             0 100
6000
300
i
?
*>
2
128.
2
128.
2
128.
0/24
128/32
2
7.
2
7.
2
7.
1
7
0
             0
6000
100 300
i
?
*>
3
172.
3
26.
3.0/24 2.2.2.1
128.0/30  7.7.7.7
0
             0 100
6000
300 i
*> 128.128.128.1/32 2.2.2.1 

Total number of prefixes 8


Completed in 0.20 seconds
admin@node1.bosdc1#
0 6000 300 ? *> 128.128.128.128/32 2.2.2.1
show bgp neighbors 7.7.7.7 advertised-routes 
Fri 2021-05-07 08:55:28 UTC
BGP table version is 24, local router ID is 6.6.6.6, vrf id 0
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:
0
6000
i
300
-
?
IGP, e
Displayed
- EGP,
5
?
routes
-
and
incomplete
5
total
paths
  Network
Completed
in
0.12
seconds
admin@node1.nycconductor1#
show
bgp
router
seabo1
 Next
Thu
Hop
2021-05-06
21:36:47
UTC
========
seabo1
========
BGP
table
version
is
8,
Metric
local
LocPrf
router
Weight
ID
Path
is
*> 1.1.1.
128, vrf id 0 Status codes:
0/24
s
suppressed,
d
damped,
h history, * valid, > best, = multipath,
 0.0.0.0
i internal,
r
RIB-failure,
S
Stale,
R
Removed
Nexthop
codes:
@NNN
nexthop's
vrf
0
id,
6000
< announce-nh-self Origin codes: i - IGP, e - EGP, ? - incomplete
i
*> 2.2.2.0/24       0.0.0.0
Network
Next
Hop
Metric
0
LocPrf
100
Weight
6000
Path
i
*>
1
3.
1
3.
1
3.0/24
1
0.
1
0.
1
0.
1
0
0
             0 6000 i
*>
2
7.
2
7.
2
7.
0
7/
24
32
1
0.
1
0.
1
0.
1
0             
999999
0
0 6000 i
 32768 ?
*>
3
8.
3
8.
3
8.
0
8/
24
32
1
0.
1
0.
1
0.
1
0             999999
0
0 6000 i 
32768 ?
*> 128.128.128.1/32
1
0.
1
0.
1.1 
0.0            1000000
0
6000
300
32768 ?
*> 128.128.128.128/32
1
0.
1
0.
1
0.
1
0            1000000
0 6000 300
32768 ?
*> 172.26.128.0/30
1
0.
1
0.
1
0.
1
0                  0
0 6000 300
32768 i
Displayed 6 routes and 6 total paths
Total number of prefixes 8


Completed in 0.
12
18 seconds
admin@node1.
nycconductor1# Exercise 4BGP Over SVRStep 1Configure Routing InterfaceStep 2Change Router Instance to Routing InterfaceStep 3Add BGP Over SVR PeersStep 4Add BGP Over SVR PeersStep 5Verify BGP Over SVR
bosdc1#