diff options
| author | Soumya Roy <souroy@souroy-mlt.client.nvidia.com> | 2025-02-14 18:13:37 -0800 |
|---|---|---|
| committer | Soumya Roy <souroy@nvidia.com> | 2025-03-05 06:15:56 +0000 |
| commit | 6a75d33b5cb9f5a87d71d169e24c1ae15e1bd896 (patch) | |
| tree | 611b1229f4c05eb33e06977b317d4bb079da537d /tests | |
| parent | 6c3e1e4fd636e6cdc9a14c4d19de26784a6b890e (diff) | |
zebra: Bring up 514 BGP neighbor sessions
Issue:
When 514 inerfaces/neighbors are configured, it creates socket error,
"Cannot allocate memory", when back to back V6 RA messages are tried
to be sent over the socket. This prevents interface, to know its peer's
link local address. Socket error comes when 1) try to join ICMPv6 all
router multicast group, back to back for all interfaces 2)send back to
back RA for all interfaces
Fix:
1)For ICMPv6 join case, we check if the interface has already joined
all router group, if not try to join. On failure, retry joining after
random amount of time determined 1 ms to ICMPV6_JOIN_TIMER_EXP_MS(100 ms)
2) For RA issue case, batch sending of RA mesages using wheel timer
Testing:
Monitor BGP session running sh bgp summary command
Before fix:
r1# sh bgp summary
IPv4 Unicast Summary:
BGP router identifier 192.168.1.1, local AS number 1001 VRF default vrf-id 0
BGP table version 0
RIB entries 0, using 0 bytes of memory
Peers 515, using 12 MiB of memory
Neighbor V AS MsgRcvd MsgSent TblVer InQ OutQ Up/Down State/PfxRcd PfxSnt Desc
r1-eth0 4 1002 89 90 0 0 0 00:07:10 0 0 N/A
r1-eth1 4 1002 89 90 0 0 0 00:07:10 0 0 N/A
r1-eth2 4 1002 89 90 0 0 0 00:07:10 0 0 N/A
r1-eth3 4 1002 89 90 0 0 0 00:07:10 0 0 N/A
r1-eth4 4 1002 89 90 0 0 0 00:07:10 0 0 N/A
r1-eth5 4 1002 89 90 0 0 0 00:07:10 0 0 N/A
…..<snip>...
r1-eth252 4 1002 31 29 0 0 0 00:02:08 0 0 N/A
r1-eth253 4 1002 31 29 0 0 0 00:02:08 0 0 N/A
r1-eth254 4 1002 31 29 0 0 0 00:02:08 0 0 N/A
r1-eth255 4 1002 31 29 0 0 0 00:02:08 0 0 N/A
r1-eth256 4 0 0 0 0 0 0 never Idle 0 N/A
r1-eth257 4 0 0 0 0 0 0 never Idle 0 N/A
r1-eth258 4 0 0 0 0 0 0 never Idle 0 N/A
r1-eth259 4 0 0 0 0 0 0 never Idle 0 N/A
r1-eth260 4 0 0 0 0 0 0 never Idle 0 N/A
……..<snip>…..
r1-eth511 4 0 0 0 0 0 0 never Idle 0 N/A
r1-eth512 4 0 0 0 0 0 0 never Idle 0 N/A
r1-eth513 4 0 0 0 0 0 0 never Idle 0 N/A
r1-eth514 4 0 0 0 0 0 0 never Idle 0 N/A
After fix:
r1# show bgp summary
IPv4 Unicast Summary:
BGP router identifier 192.168.1.1, local AS number 1001 VRF default vrf-id 0
BGP table version 0
RIB entries 0, using 0 bytes of memory
Peers 515, using 12 MiB of memory
Neighbor V AS MsgRcvd MsgSent TblVer InQ OutQ Up/Down State/PfxRcd PfxSnt Desc
r1-eth0 4 1002 87 87 0 0 0 00:07:04 0 0 N/A
r1-eth1 4 1002 87 87 0 0 0 00:07:04 0 0 N/A
r1-eth2 4 1002 87 87 0 0 0 00:07:04 0 0 N/A
r1-eth3 4 1002 64 67 0 0 0 00:05:09 0 0 N/A
r1-eth4 4 1002 87 87 0 0 0 00:07:04 0 0 N/A
r1-eth5 4 1002 87 87 0 0 0 00:07:04 0 0 N/A
r1-eth6 4 1002 67 70 0 0 0 00:05:22 0 0 N/A
r1-eth7 4 1002 87 87 0 0 0 00:07:04 0 0 N/A
r1-eth8 4 1002 87 87 0 0 0 00:07:04 0 0 N/A
....
r1-eth499 4 1002 43 43 0 0 0 00:03:22 0 0 N/A
r1-eth500 4 1002 43 43 0 0 0 00:03:22 0 0 N/A
r1-eth501 4 1002 19 22 0 0 0 00:01:21 0 0 N/A
r1-eth502 4 1002 43 43 0 0 0 00:03:22 0 0 N/A
r1-eth503 4 1002 43 43 0 0 0 00:03:22 0 0 N/A
r1-eth504 4 1002 20 23 0 0 0 00:01:30 0 0 N/A
r1-eth505 4 1002 43 43 0 0 0 00:03:22 0 0 N/A
r1-eth506 4 1002 43 43 0 0 0 00:03:22 0 0 N/A
r1-eth507 4 1002 22 25 0 0 0 00:01:39 0 0 N/A
r1-eth508 4 1002 43 43 0 0 0 00:03:22 0 0 N/A
r1-eth509 4 1002 17 20 0 0 0 00:01:13 0 0 N/A
r1-eth510 4 1002 43 43 0 0 0 00:03:22 0 0 N/A
r1-eth511 4 1002 43 43 0 0 0 00:03:22 0 0 N/A
r1-eth512 4 1002 19 22 0 0 0 00:01:22 0 0 N/A
r1-eth513 4 1002 43 43 0 0 0 00:03:22 0 0 N/A
r1-eth514 4 1002 43 43 0 0 0 00:03:22 0 0 N/A
Signed-off-by: Soumya Roy <souroy@nvidia.com>
Diffstat (limited to 'tests')
| -rw-r--r-- | tests/topotests/high_ecmp/test_high_ecmp.py | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/tests/topotests/high_ecmp/test_high_ecmp.py b/tests/topotests/high_ecmp/test_high_ecmp.py index d28a1ee069..daaf5d4d27 100644 --- a/tests/topotests/high_ecmp/test_high_ecmp.py +++ b/tests/topotests/high_ecmp/test_high_ecmp.py @@ -43,7 +43,6 @@ from lib.topolog import logger def build_topo(tgen): - tgen.add_router("r1") tgen.add_router("r2") |