[bgp]: Reduce bgp connect retry timer to 10 seconds (sonic-net#7169)

The default bgp connect retry timer is 120 seconds. A reconnection will happen 120 seconds if the initial connection fails. This PR aims to allow a more frequent retry.

Author: shi-su

dockers/docker-fpm-frr/frr/bgpd/templates/general/instance.conf.j2

@@ -8,6 +8,7 @@
       or  (bgp_session['holdtime'] is defined  and bgp_session['holdtime']  | int != 180) %}
   neighbor {{ neighbor_addr }} timers {{ bgp_session['keepalive'] | default("60") }} {{ bgp_session['holdtime'] | default("180") }}
 {% endif %}
+  neighbor {{ neighbor_addr }} timers connect 10
 !
 {% if 'admin_status' in bgp_session and bgp_session['admin_status'] == 'down' or 'admin_status' not in bgp_session and 'default_bgp_status' in CONFIG_DB__DEVICE_METADATA['localhost'] and CONFIG_DB__DEVICE_METADATA['localhost']['default_bgp_status'] == 'down' %}
   neighbor {{ neighbor_addr }} shutdown

src/sonic-bgpcfgd/tests/data/general/instance.conf/result_all_v4.conf

@@ -4,6 +4,7 @@
   neighbor 10.10.10.10 remote-as 555
   neighbor 10.10.10.10 description remote_peer
   neighbor 10.10.10.10 timers 5 30
+  neighbor 10.10.10.10 timers connect 10
   neighbor 10.10.10.10 shutdown
   address-family ipv4
     neighbor 10.10.10.10 peer-group PEER_V4

src/sonic-bgpcfgd/tests/data/general/instance.conf/result_all_v6.conf

@@ -4,6 +4,7 @@
   neighbor fc::10 remote-as 555
   neighbor fc::10 description remote_peer
   neighbor fc::10 timers 5 30
+  neighbor fc::10 timers connect 10
   neighbor fc::10 shutdown
   address-family ipv6
     neighbor fc::10 peer-group PEER_V6

src/sonic-bgpcfgd/tests/data/general/instance.conf/result_base_v4.conf

@@ -3,6 +3,7 @@
 !
   neighbor 10.10.10.10 remote-as 555
   neighbor 10.10.10.10 description remote_peer
+  neighbor 10.10.10.10 timers connect 10
   address-family ipv4
     neighbor 10.10.10.10 peer-group PEER_V4
     neighbor 10.10.10.10 activate

src/sonic-bgpcfgd/tests/data/general/instance.conf/result_base_v6.conf

@@ -3,6 +3,7 @@
 !
   neighbor fc00::2 remote-as 555
   neighbor fc00::2 description remote_peer
+  neighbor fc00::2 timers connect 10
   address-family ipv6
     neighbor fc00::2 peer-group PEER_V6
     neighbor fc00::2 activate

src/sonic-bgpcfgd/tests/data/general/instance.conf/result_l2vpn.conf

@@ -3,6 +3,7 @@
 !
   neighbor 10.10.10.10 remote-as 555
   neighbor 10.10.10.10 description remote_peer
+  neighbor 10.10.10.10 timers connect 10
   address-family ipv4
     neighbor 10.10.10.10 peer-group PEER_V4
     neighbor 10.10.10.10 activate

src/sonic-bgpcfgd/tests/data/general/instance.conf/result_shutdown_1.conf

@@ -3,6 +3,7 @@
 !
   neighbor 10.10.10.10 remote-as 555
   neighbor 10.10.10.10 description remote_peer
+  neighbor 10.10.10.10 timers connect 10
   neighbor 10.10.10.10 shutdown
   address-family ipv4
     neighbor 10.10.10.10 peer-group PEER_V4

src/sonic-bgpcfgd/tests/data/general/instance.conf/result_shutdown_2.conf

@@ -3,6 +3,7 @@
 !
   neighbor 10.10.10.10 remote-as 555
   neighbor 10.10.10.10 description remote_peer
+  neighbor 10.10.10.10 timers connect 10
   address-family ipv4
     neighbor 10.10.10.10 peer-group PEER_V4
     neighbor 10.10.10.10 activate

src/sonic-bgpcfgd/tests/data/general/instance.conf/result_timers_1.conf

@@ -4,6 +4,7 @@
   neighbor 10.10.10.10 remote-as 555
   neighbor 10.10.10.10 description remote_peer
   neighbor 10.10.10.10 timers 5 180
+  neighbor 10.10.10.10 timers connect 10
   address-family ipv4
     neighbor 10.10.10.10 peer-group PEER_V4
     neighbor 10.10.10.10 activate

src/sonic-bgpcfgd/tests/data/general/instance.conf/result_timers_2.conf

@@ -4,6 +4,7 @@
   neighbor 10.10.10.10 remote-as 555
   neighbor 10.10.10.10 description remote_peer
   neighbor 10.10.10.10 timers 60 240
+  neighbor 10.10.10.10 timers connect 10
   address-family ipv4
     neighbor 10.10.10.10 peer-group PEER_V4
     neighbor 10.10.10.10 activate