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In ebgp-multihop, there is a difference in reload behavior when TTL is
unspecified (meaning default 255) and when 255 is explicitly specified.
For example, when reloading with 'neighbor <neighbor> ebgp-multihop
255' in the config, the following difference is created. This commit
fixes that.
Lines To Delete
===============
router bgp 65001
no neighbor 10.0.0.4 ebgp-multihop
exit
Lines To Add
============
router bgp 65001
neighbor 10.0.0.4 ebgp-multihop 255
exit
The commit 767aaa3a8048 is not sufficient and frr-reload needs to be
fixed to handle both unspecified and specified cases.
Signed-off-by: Nobuhiro MIKI <nob@bobuhiro11.net>
(cherry picked from commit 594e917656da5502b302309aed3cf596df24713f)
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When reloading the following configuration:
```
vrf red
rpki
rpki cache tcp 172.65.0.2 8282 preference 1
exit
exit-vrf
```
frr-reload.py does not properly enter the `rpki` context
within a `vrf`. Because of this, it fails to apply RPKI
configurations.
Signed-off-by: Jonathan Voss <jvoss@onvox.net>
(cherry picked from commit 975ee8ed6eb22f68538f3446b29ca34d65bec72f)
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If frr.conf has bgp as-path access-list clause without sequence number
then upon performing frr-rleoad, the running config clause with sequence
number will always be deleted and the new ones without sequence will
be re-added.
This could lead to blackholing until the config gets reapplied.
Testing:
frr.conf:
bgp as-path access-list important_internet_bgp_as_numbers permit _16509_
Running config:
bgp as-path access-list important_internet_bgp_as_numbers seq 5 permit
_16509_
!
Before fix
Upon frr-reload it deletes and readd line as without seq
2024-04-26 03:16:45,772 INFO: Executed "no bgp as-path access-list
important_internet_bgp_as_numbers seq 5 permit _16509_"
'bgp as-path access-list important_internet_bgp_as_numbers permit
_16509_\n'
After fix:
no form is not executed and no delta determine between frr.conf
and running-config.
Signed-off-by: Chirag Shah <chirag@nvidia.com>
(cherry picked from commit 439c6f70b5bf7c8d92719458a37c9cce70b241c9)
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if frr.conf file contains 'interface x vrf <name> config
it causes protocol (like ospf) neighbor session flap,
as it deletes interface base config line ('interface x') from
running config and readds with 'interface x vrf <name>'
line from frr.conf.
This deletion and readdition of lines leads to neighborship
flaps.
This issue is by product of (PR-10411 | https://github.com/FRRouting/frr/pull/10411)
(commit id: 788a036fdb)
where running config for interface config no loger displays associated
vrf line.
Ticket: #3858146
Testing:
frr.conf
interface swp1.2 vrf vrf1012
ip ospf network point-to-point
running-config:
interface swp1.2
ip ospf network point-to-point
exit
Before fix:
frr-reload logs:
2024-04-09 00:28:31,096 INFO: Executed "interface swp1.2 no ip ospf
network point-to-point exit"
'interface swp1.2 vrf vrf1012\n ip ospf network
point-to-point\nexit\n',
After fix:
frr-reload strips vrf line, thus no config change between
frr.conf and running config.
Signed-off-by: Chirag Shah <chirag@nvidia.com>
(cherry picked from commit c1356f0e85e7b8480295d38b843a729d4a491d41)
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Signed-off-by: Donatas Abraitis <donatas@opensourcerouting.org>
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Ensure to change description for index 0 from the list.
Ticket: #3628756
Testing Done:
After fix:
start with three interfaces description delete in lines_to_del:
(Pdb) lines_to_del
[(('interface swp1',), "description swp1 -> sp1's swp1"),
(('interface swp2',), "description swp2 -> sp2's swp
1"), (('interface swp3',), "description swp3 -> sp3's swp1")]
After first iteration swp1:
(Pdb) index
0
(Pdb) lines_to_del
[(('interface swp1',), 'description'), (('interface swp2',),
"description swp2 -> sp2's swp1"), (('interface swp
1s2',), "description swp3 -> sp3's swp1")]
After second iteration swp2:
(Pdb) lines_to_del
[(('interface swp1',), 'description'), (('interface swp2',),
'description'), (('interface swp3',), "description
swp3 -> sp3's swp1")]
After third iteration swp3 fix
(Pdb) lines_to_del
[(('interface swp1',), 'description'), (('interface swp2',),
'description'), (('interface swp3',), 'description'
)]
Signed-off-by: Chirag Shah <chirag@nvidia.com>
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Fix frr-reload script to only render 'no description'
rather than 'no description blah'
Ticket:#3628756
Testing Done:
Before:
2023-11-29 02:38:55,758 INFO: Failed to execute interface hostbond_1
no description hostbond_1_to_host exit
2023-11-29 02:38:55,758 ERROR: "interface hostbond_1 -- no description
hostbond_1_to_host -- exit" we failed to remove this command
2023-11-29 02:38:55,758 ERROR: % Unknown command: no description
hostbond_1_to_host
Signed-off-by: Chirag Shah <chirag@nvidia.com>
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Signed-off-by: Donatas Abraitis <donatas@opensourcerouting.org>
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Fix frr-reload script to only render 'no description'
rather than 'no description blah'
Ticket:#3650752
Testing:
route-map TEST permit 140
description rule for PFIX_IPV6_7
match ipv6 address prefix-list PFIX_IPV6_7
exit
!
end
torc-11# confi t
torc-11(config)# route-map TEST permit 140
torc-11(config-route-map)# no description rule for PFIX_IPV6_7
% Unknown command: no description rule for PFIX_IPV6_7
torc-11(config-route-map)# no description rule
% There is no matched command.
torc-11(config-route-map)# no description
<cr>
torc-11(config-route-map)# no description
torc-11(config-route-map)#
Using frr-reload failure log:
2023-10-31 00:30:31,972 INFO: Failed to execute route-map TEST permit 140 no description rule for PFIX_IPV6_7 exit
2023-10-31 00:30:31,972 ERROR: "route-map TEST permit 140 -- no description rule for PFIX_IPV6_7 -- exit" we failed to remove this command
2023-10-31 00:30:31,972 ERROR: % Unknown command: no description rule for PFIX_IPV6_7
With fix:
2023-11-02 06:10:30,024 INFO: Executed "route-map TEST permit 140 no description exit"
Signed-off-by: Chirag Shah <chirag@nvidia.com>
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When deleting a key chain with frr-reload track if the whole root node
is being removed or not.
Signed-off-by: Rafael Zalamena <rzalamena@opensourcerouting.org>
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tools: always append "exit" in frr-reload.py
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OSPFv2 no area x stub no-summary only resets
'no-summary' config. From frr-reload if the config
line 'area x stub no-summary' is removed then
it needs to remove completely. Before this change
it took two frr-roload to remove the config which is
inconsistent behavior.
Fix is to frr-reload to add extra line to delete
'no area x stub'.
Ticket:#3514775
Testing Done:
Running config:
router ospf
ospf router-id 6.6.6.6
area 0.0.0.1 stub no-summary
area 0.0.0.2 stub
exit
!
router ospf vrf sym_1
area 0.0.1.1 range 24.1.1.0/24
area 0.0.1.2 stub no-summary
exit
changed frr.conf:
router ospf
ospf router-id 6.6.6.6
area 0.0.0.2 stub
exit
!
router ospf vrf sym_1
area 0.0.1.1 range 24.1.1.0/24
exit
Lines To Delete
===============
router ospf
no area 0.0.0.1 stub <<<< newly added
router ospf vrf sym_1
no area 0.0.1.2 stub <<<< newly added
router ospf
no area 0.0.0.1 stub no-summary
router ospf vrf sym_1
no area 0.0.1.2 stub no-summary
After fix new running-config post reload:
i
router ospf
ospf router-id 6.6.6.6
area 0.0.0.2 stub
exit
!
router ospf vrf sym_1
area 0.0.1.1 range 24.1.1.0/24
exit
Before fix running-config post 1st reload:
router ospf
ospf router-id 6.6.6.6
area 0.0.0.1 stub
area 0.0.0.2 stub
exit
!
router ospf vrf sym_1
area 0.0.1.1 range 24.1.1.0/24
area 0.0.1.2 stub
exit
Signed-off-by: Chirag Shah <chirag@nvidia.com>
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When reloading the following config:
```
router ospf6
area 0 range 2001:db8::/32 advertise
exit
!
interface eth0
ipv6 ospf6 area 0
exit
```
frr-reload.py doesn't execute "exit" commands. Because of that, it tries
to execute "interface eth0" inside the "router ospf6" context and fails.
To always execute all commands from the correct context, frr-reload.py
should properly exit from every entered node.
Fixes #10132.
Signed-off-by: Igor Ryzhov <iryzhov@nfware.com>
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When no ip pim is performed subsequent pim related
configs under the interface also implicitly deleted.
When doing this via frr-reload requires to remove any
explicit no ip pim <blah> lines so delete list.
Testing Done:
running-config:
interface lo
ip pim
ip pim use-source 6.0.0.1
exit
frr.conf:
remove two pim config lines.
interface lo
exit
Before fix:
2023-06-29 23:44:26,062 INFO: Failed to execute interface lo no ip pim use-source 6.0.0.1
2023-06-29 23:44:26,142 INFO: Failed to execute interface lo no ip pim use-source
2023-06-29 23:44:26,221 INFO: Executed "interface lo no ip pim"
After fix:
Only no ip pim executed and rest of the other lines removed from delete
list.
2023-06-30 01:07:32,618 INFO: Executed "interface lo no ip pim"
Signed-off-by: Chirag Shah <chirag@nvidia.com>
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There might be a time element(s) from
temporary list are removed more than once
which leads to valueError in certain python3
version.
commit-id 1543f58b5 did not handle valueError
properly. This caused regression where
prefix-list config leads to delete followed
by add.
The new fix should just pass the exception as
value removal from list_to_add or list_to_del
is best effort.
This allows prefix-list config has no change
then removes the lines from lines_to_del and
lines_to_add properly.
Ticket:#3490252
Testing:
Configure prefix-list in frr.conf and perform
multiple frr-reload. After first reload operatoin
subsequent ones should not result in delete followed
by add of the prefix-list but rather no-op operation.
(Pdb) lines_to_add
[(('ip prefix-list FOO permit 10.2.1.0/24',), None)]
(Pdb) lines_to_del
[(('ip prefix-list FOO seq 5 permit 10.2.1.0/24',), None),
(('ip prefix-list FOO seq 10 permit 10.2.1.0/24',), None)]
(Pdb) lines_to_del_to_del
[(('ip prefix-list FOO seq 5 permit 10.2.1.0/24',), None),
(('ip prefix-list FOO seq 10 permit 10.2.1.0/24',), None)]
(Pdb) lines_to_add_to_del
[(('ip prefix-list FOO permit 10.2.1.0/24',), None),
(('ip prefix-list FOO permit 10.2.1.0/24',), None)]
(Pdb) c
> /usr/lib/frr/frr-reload.py(1562)ignore_delete_re_add_lines()
-> return (lines_to_add, lines_to_del)
(Pdb) lines_to_add
[]
(Pdb) lines_to_del
[]
Signed-off-by: Chirag Shah <chirag@nvidia.com>
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The check flag of `found_pg_cmd` is already there, but not used.
So, make it really work for reload.
Signed-off-by: anlan_cs <vic.lan@pica8.com>
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From commit `411d1a2`, `bgp_delete_nbr_remote_as_line()` is added to
remove some specific bgp neighbors. But, when reloading the following
configuration, it will wrongly remove some good ones:
`neighbor 66.66.66.6 remote-as internal`:
```
router bgp 66
bgp router-id 172.16.204.6
neighbor ANLAN peer-group
neighbor ANLAN remote-as internal
neighbor 66.66.66.6 remote-as internal <- LOST
neighbor 66.66.66.60 peer-group ANLAN
```
The reason is that "66.66.66.6" is included in "66.66.66.60" literally,
then it is mistakenly thought to be a match. Just fix it with
excat match.
Signed-off-by: anlan_cs <vic.lan@pica8.com>
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Check for value present in list before removing
as in certain python3 ValueError traceback is observed.
Traceback (most recent call last):
File "/usr/lib/frr/frr-reload.py",
line 2278, in <module>
(lines_to_add, lines_to_del, restart_frr)
= compare_context_objects(newconf, running)
File "/usr/lib/frr/frr-reload.py",
line 1933, in compare_context_objects
lines_to_add, lines_to_del
File "/usr/lib/frr/frr-reload.py",
line 1549, in ignore_delete_re_add_lines
lines_to_del.remove((ctx_keys, line))
ValueError: list.remove(x): x not in list
Ticket:#3389979
Issue:3389979
Testing Done:
With fix perform frr-relaod on frr.conf config where earlier
traceback was seen.
Signed-off-by: Donald Sharp <sharpd@nvidia.com>
Signed-off-by: Chirag Shah <chirag@nvidia.com>
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Done with a combination of regex'ing and banging my head against a wall.
Signed-off-by: David Lamparter <equinox@opensourcerouting.org>
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Got `ERROR: Daemon babeld is not a valid option for 'show running-config'` when using `frr-reload.py --reload --daemon babeld`.
Adds `babeld` and `nhrpd` as valid daemons.
Signed-off-by: Yuxiang Zhu <vfreex@gmail.com>
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agentx can't be disabled once enabled, so we should ignore it for frr-reload.py.
```
$ /usr/lib/frr/frr-reload.py --reload /etc/frr/bgpd.conf --bindir /usr/local/bin
"no agentx" we failed to remove this command
SNMP AgentX support cannot be disabled once enabled
```
Signed-off-by: Donatas Abraitis <donatas@opensourcerouting.org>
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Signed-off-by: Donatas Abraitis <donatas@opensourcerouting.org>
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If we add/modify community/large/ext lists without sequence numbers, and
doing frr-reload.py, then rules with sequence numbers (show running-config
always adds sequence numbers) will be deleted and new ones will be re-added.
This could lead to blackholing for some time.
Signed-off-by: Donatas Abraitis <donatas@opensourcerouting.org>
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Signed-off-by: Donald Sharp <sharpd@nvidia.com>
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Signed-off-by: Christian Poessinger <christian@poessinger.com>
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Convert string literals to comment.
Signed-off-by: Chirag Shah <chirag@nvidia.com>
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When a bgp neighbor removed from associated to peer-group,
the neighbor is fully deleted, subsequent deletion of any
configuration related to the neighbor leads to failure
in frr-reload.
Fix: In frr-reload lines to delete check if any neighbor with
peer-group removal line is present, if so then remove any
further config deletion associated the neighbor needs to removed
from the lines to delete.
Ticket:#3032234
Reviewed By:
Testing Done:
BEFORE FIX:
-----------
2022-04-08 20:03:32,734 INFO: Executed "router bgp 4200000005 no neighbor swp5 interface peer-group UNDERLAY"
2022-04-08 20:03:32,892 INFO: Failed to execute router bgp 4200000005 no neighbor swp5 password SSSS
2022-04-08 20:03:33,050 INFO: Failed to execute router bgp 4200000005 no neighbor swp5 password
2022-04-08 20:03:33,218 INFO: Failed to execute router bgp 4200000005 no neighbor swp5
2022-04-08 20:03:33,354 INFO: Failed to execute router bgp 4200000005 no neighbor
2022-04-08 20:03:33,520 INFO: Failed to execute router bgp 4200000005 no
2022-04-08 20:03:33,521 ERROR: "router bgp 4200000005 -- no" we failed to remove this command
2022-04-08 20:03:33,521 ERROR: % Specify remote-as or peer-group commands first
2022-04-08 20:03:33,691 INFO: Failed to execute router bgp 4200000005 no neighbor swp5 advertisement-interval 0
2022-04-08 20:03:33,853 INFO: Failed to execute router bgp 4200000005 no neighbor swp5 advertisement-interval
2022-04-08 20:03:34,015 INFO: Failed to execute router bgp 4200000005 no neighbor swp5
2022-04-08 20:03:34,145 INFO: Failed to execute router bgp 4200000005 no neighbor
2022-04-08 20:03:34,326 INFO: Failed to execute router bgp 4200000005 no
2022-04-08 20:03:34,327 ERROR: "router bgp 4200000005 -- no" we failed to remove this command
2022-04-08 20:03:34,327 ERROR: % Specify remote-as or peer-group commands first
AFTER FIX:
----------
delete of numbered neighbor:
2022-04-08 19:52:17,204 INFO: Executed "router bgp 4200000005 no
neighbor 1.2.3.4 peer-group UNDERLAY"
2022-04-08 19:52:17,205 INFO: /var/run/frr/reload-GRFX1M.txt content
delete of unnumbered neighbor:
2022-04-08 20:00:02,952 INFO: Executed "router bgp 4200000005 no
neighbor swp5 interface peer-group UNDERLAY"
2022-04-08 20:00:02,953 INFO: /var/run/frr/reload-722C3P.txt content
Signed-off-by: Chirag Shah <chirag@nvidia.com>
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BGPd does not allow default instance deletion
in presence of bgp vrf instance;
frr-reload script fails if delete list contains
default instance followed by vrf instance.
Fix:
frr-reload scans lines_to_delete to look for
'router bgp' and 'router bgp vrf ...' line.
If both are present switch the order to delete
bgp vrf instance(s) than default instance at the end.
Testing Done:
Before:
INFO: Loading Config object from file /etc/frr/frr.conf
INFO: Loading Config object from vtysh show running
INFO: Failed to execute no router bgp 40201 <-- Failed to delete
INFO: Failed to execute no router bgp
INFO: Failed to execute no router
ERROR: "no router" we failed to remove this command
ERROR: % Cannot delete default BGP instance. Dependent VRF instances exist
INFO: Executed "no router bgp 40201 vrf bgp-test" <-- vrf instance deleted
INFO: Loading Config object from vtysh show running
After:
order of deletion switched
INFO: Loading Config object from file /etc/frr/frr.conf
INFO: Loading Config object from vtysh show running
INFO: Executed "no router bgp 40201 vrf bgp-test"
INFO: Executed "no router bgp 40201"
INFO: Loading Config object from vtysh show running
Signed-off-by: Chirag Shah <chirag@nvidia.com>
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At the moment we set /var/log/frr permissions to 0750 (frr:frr), but the log
file is 0640 (root:adm) (unless logrotated) and that doesn't allow adm group
to even open the directory.
Signed-off-by: Donatas Abraitis <donatas@opensourcerouting.org>
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There are singline-line commands inside `router bgp` that start with
`vnc ` or `bmp `. Those commands are currently treated as node-entering
commands. We need to specify such commands more precisely.
Fixes #10548.
Signed-off-by: Igor Ryzhov <iryzhov@nfware.com>
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tools: cleanup convertion of "Null0"
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tools: fix wrong get_contexts() of Config class.
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Signed-off-by: anlan_cs <anlan_cs@tom.com>
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tools: exit when reload fails to parse config file
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frr-reload triggers restart of service in case
it fails to parse new config file and conjunction with
running config contains 'router bgp' (default bgp instnace).
When frr-reload fails to parse new config file, it fails
to build newconfig context (empty object).
Instead of bailing out it compares against the running config
context. If the running config contains default bgp instance
it thinks new config is removing default bgp instance so it
triggers frr restart.
Fix is to to bail out reload script when it fails to parse
config file.
Ticket:#2861989
Reviewed By: MR-83
Testing Done:
router bgp 102 vrf RED
bgp router-id 2.2.2.2
neighbor underlay peer-group
neighbor underlay remote-as <---- Partial config
Before fix:
2021-12-02 02:43:16,987 ERROR: vtysh failed to process new
configuration: vtysh (mark file) exited with status 4:
b'line 79: % Command incomplete: neighbor underlay remote-as\n\n'
2021-12-02 02:43:17,145 INFO: Loading Config object from vtysh show
running
2021-12-02 02:43:17,362 INFO: "frr version 7.5+cl5.0.0u0" cannot be
removed
2021-12-02 02:43:17,362 INFO: "frr defaults datacenter" cannot be
removed
2021-12-02 02:43:17,362 INFO: "service integrated-vtysh-config" cannot
be removed
2021-12-02 02:43:17,363 INFO: "line vty" cannot be removed
2021-12-02 02:43:17,522 INFO: EVPN is enabled and default instance del
needed
2021-12-02 02:43:17,522 INFO: Restarting FRR <---- Restart frr
After fix:
Just throw Error and abort the script.
root@TORS1:mgmt:/home/cumulus# /usr/lib/frr/frr-reload.py --debug
--reload --stdout /etc/frr/frr.conf
2021-12-02 04:00:56,519 INFO: Called via "Namespace(bindir='/usr/bin',
confdir='/etc/frr', daemon='', debug=True, filename='/etc/frr/$
rr.conf', input=None, overwrite=False, pathspace=None, reload=True,
rundir='/var/run/frr', stdout=True, test=False, vty_socket=None)"
2021-12-02 04:00:56,520 INFO: Loading Config object from file
/etc/frr/frr.conf
2021-12-02 04:00:56,679 ERROR: vtysh failed to process new
configuration: vtysh (mark file) exited with status 4:
b'line 79: % Command incomplete: neighbor underlay remote-as\n\n'
root@TORS1:mgmt:/home/cumulus#
Signed-off-by: Chirag Shah <chirag@nvidia.com>
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Remove neighbor <> remote-as <> config line,
if the neighbor is part of the peer-group and
peer-group contains remote-as config.
Neighbors which are part of the peer-group
cannot override remote-as.
Fix:
Frr-reload needs to remote 'neighbor <> remote-as <>'
from lines_to_add if its already part of peer-group
and peer-group has remote-as config.
Testing Done:
Before:
Config snippet:
neighbor PEERS peer-group
neighbor PEERS remote-as external
neighbor PEERS timers 3 9
neighbor 10.2.1.1 remote-as external
neighbor 10.2.1.1 peer-group PEERS
neighbor 10.2.1.1 timers 3 9
neighbor 10.2.1.2 remote-as external
neighbor 10.2.1.2 peer-group PEERS
Frr-reload failure:
line 179: Failure to communicate[13] to bgpd, line: neighbor 10.2.1.1
remote-as external
% Peer-group member cannot override remote-as of peer-group
line 179: Failure to communicate[13] to bgpd, line: neighbor 10.2.1.2
remote-as external
% Peer-group member cannot override remote-as of peer-group
After:
frr-reload apply the config successfully.
Signed-off-by: Chirag Shah <chirag@nvidia.com>
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This was deprecated over a year ago now. Let's finally
remove it from the system.
Signed-off-by: Donald Sharp <sharpd@nvidia.com>
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Signed-off-by: Quentin Young <qlyoung@nvidia.com>
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Convert all floating string literals being used as comments, to comments
Signed-off-by: Quentin Young <qlyoung@nvidia.com>
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Calling get_contexts() can't display as expected, it wrongly displays:
<__main__.Context object at 0x7fdee1d5ad50>
So make it display correct data by add __str__ in Context class.
Signed-off-by: anlan_cs <anlan_cs@tom.com>
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Signed-off-by: Christian Hopps <chopps@labn.net>
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Signed-off-by: Christian Hopps <chopps@labn.net>
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We already, reasonably, require python3 elsewhere. Do so here, and reap some
benefit.
Signed-off-by: Christian Hopps <chopps@labn.net>
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Currently, in frr-reload we:
- store a list of single-line context keywords which needs to be
frequently updated,
- have a separate "if" clause for every node and subnode we have in FRR.
Instead, we can store the tree of all known FRR nodes. This tree needs
to be updated whenever we add a new node, which is not frequent. And,
most importantly, it allows us to write node-agnostic code and save more
than 250 LOC.
Signed-off-by: Igor Ryzhov <iryzhov@nfware.com>
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tools: add "vni" to oneline list
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- Remove incorrect requirement for `service integrated-vtysh-config`
when producing a delta.
- Add `--test-reset` option which suppresses non-parseable lines from the
produced delta
- Use new features in common_config.py
Signed-off-by: Christian Hopps <chopps@labn.net>
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Add "vni" into oneline list.
Additionally, keep them in order in oneline list.
Signed-off-by: anlancs <anlan_cs@tom.com>
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When using frr-reload.py to modify a bgp neighbors route-map
the code was doing this:
a) deleting the previous route-map: `no neighbor XX route-map YY (in|out)`
b) Adding the new route-map back in `neighbor XX route-may ZZ (in|out)`
Now imagine that we have an outgoing route-map that we are changing
and the reload is large because of a large number of lines in frr.conf
Item (a) will happen. BGP will immediately start sending all local
routes. At some point in time in the future (b) will be applied.
This of course causes a withdraw but for a short amount of time we
are leaking unintended routes. This is bad for several reasons
not 1) route churn upstream, 2) we might influence traffic to go the
wrong way. 3) if upstream has a maximum-prefix command the routes
being sent might trip its circuitry and shutdown the peer entirely
not even allowing you to get to (b).
Ticket: #2589685
Signed-off-by: Donald Sharp <sharpd@nvidia.com>
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tools: make frr-reload recognize `pbr table range` lines as single-line contexts
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Problem reported that frr-reload.py didn't handle the mac access-list
command correctly, causing reloads to fail. This fix adds the
support for the command as a single line context.
Signed-off-by: Don Slice <dslice@nvidia.com>
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