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[bgp]: Update TSA functionality (#5906)

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Fixed TSA bugs:
1. TSA didn't advertise Loopback ipv6 address
2. TSA and TSB changed BGP dynamic and BGP monitors sessions

**- How to verify it**
Build an image and run on your DUT.
```
admin@str-s6100-acs-1:~$ TSA
System Mode: Normal -> Maintenance
admin@str-s6100-acs-1:~$ vtysh -c 'show bgp ipv4 neighbors 10.0.0.1 advertised-routes'
BGP table version is 6, local router ID is 10.1.0.32, vrf id 0
Default local pref 100, local AS 64601
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
*> 10.1.0.32/32     0.0.0.0                  0         32768 i

Total number of prefixes 1
admin@str-s6100-acs-1:~$ vtysh -c 'show bgp ipv6 neighbors fc00::a advertised-routes'
BGP table version is 6, local router ID is 10.1.0.32, vrf id 0
Default local pref 100, local AS 64601
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
*> fc00:1::/64      ::                       0         32768 i

Total number of prefixes 1
admin@str-s6100-acs-1:~$ TSB
System Mode: Maintenance -> Normal
```

Co-authored-by: Pavel Shirshov <pavel.contrib@gmail.com>
This commit is contained in:
pavel-shirshov 2020-11-13 17:54:20 -08:00 committed by GitHub
parent bf50562670
commit af654944bd
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
4 changed files with 18 additions and 3 deletions
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7
dockers/docker-fpm-frr/TSA
View File

@ -24,12 +24,17 @@ then
case "$route_map_name" in
*V4*)
ip_version=V4
ip_protocol=ip
;;
*V6*)
ip_version=V6
ip_protocol=ipv6
;;
*)
continue
;;
esac
sonic-cfggen -d -a "{\"route_map_name\":\"$route_map_name\", \"ip_version\": \"$ip_version\"}" -y /etc/sonic/constants.yml -t /usr/share/sonic/templates/bgpd/tsa/bgpd.tsa.isolate.conf.j2 > "$TSA_FILE"
sonic-cfggen -d -a "{\"route_map_name\":\"$route_map_name\", \"ip_version\": \"$ip_version\", \"ip_protocol\": \"$ip_protocol\"}" -y /etc/sonic/constants.yml -t /usr/share/sonic/templates/bgpd/tsa/bgpd.tsa.isolate.conf.j2 > "$TSA_FILE"
vtysh -f "$TSA_FILE"
rm -f "$TSA_FILE"
done

9
dockers/docker-fpm-frr/TSB
View File

@ -24,6 +24,15 @@ then
TSB_FILE=$(mktemp)
for route_map_name in $(echo "$config" | sed -ne 's/ neighbor \S* route-map \(\S*\) out/\1/p');
do
case "$route_map_name" in
*V4*)
;;
*V6*)
;;
*)
continue
;;
esac
sonic-cfggen -d -a "{\"route_map_name\":\"$route_map_name\"}" -t /usr/share/sonic/templates/bgpd/tsa/bgpd.tsa.unisolate.conf.j2 > "$TSB_FILE"
vtysh -f "$TSB_FILE"
rm -f "$TSB_FILE"

2
dockers/docker-fpm-frr/frr/bgpd/tsa/bgpd.tsa.isolate.conf.j2
View File

@ -1,5 +1,5 @@
route-map {{ route_map_name }} permit 2
match ip address prefix-list PL_Loopback{{ ip_version }}
match {{ ip_protocol }} address prefix-list PL_Loopback{{ ip_version }}
set community {{ constants.bgp.traffic_shift_community }}
route-map {{ route_map_name }} deny 3
!

3
src/sonic-bgpcfgd/tests/data/sonic-cfggen/tsa/isolate.json
View File

@ -5,5 +5,6 @@
}
},
"route_map_name": "test_rm_name",
"ip_version": "V4"
"ip_version": "V4",
"ip_protocol": "ip"
}