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| author | lynne <lynne@voltanet.io> | 2020-12-24 19:29:42 +0100 |
|---|---|---|
| committer | lynne <lynne@voltanet.io> | 2021-01-20 15:24:35 +0100 |
| commit | f3abc412a56a9cd3b6efbf16637231d157c73e7d (patch) | |
| tree | 8b4c1435b6f354600290ad64ea56ca24ddc471d2 /isisd/isis_pdu.c | |
| parent | Merge pull request #7832 from pjdruddy/snmp-test-infra (diff) | |
| download | frr-f3abc412a56a9cd3b6efbf16637231d157c73e7d.tar.xz frr-f3abc412a56a9cd3b6efbf16637231d157c73e7d.zip | |
isisd: Fix Attach-bit processing
The purpose of the Attach-bit is to accomplish inter-area routing. In other
venders, the Attached-bit is automatically set when a router is configured
as a L1|L2 router and has two adjacencies. When a L1 router receives a LSP
with the Attached-bit set it is supposed to create a default route pointing
toward the neighbor to provide a default path out of the L1 area.
ISIS implementation has been fixed to support the above definition:
Setting the Attach-bit is now the default behavior and we allow the user to
turn it off.
We will only set the Default Attach-bit when creating a L1 LSP, if we are
a L1|L2 router and have a L2 adjacency up.
When a L1 router receives a LSP with the Attach-bit set, we will create a
default route pointing to the L1|L2 router as the nexthop.
The default route will be removed if the LSP is received with the Attach-bit
cleared.
Signed-off-by: Lynne Morrison <lynne@voltanet.io>
Diffstat (limited to 'isisd/isis_pdu.c')
| -rw-r--r-- | isisd/isis_pdu.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/isisd/isis_pdu.c b/isisd/isis_pdu.c index 72de5d654..2d68aaa9e 100644 --- a/isisd/isis_pdu.c +++ b/isisd/isis_pdu.c @@ -729,8 +729,8 @@ static int process_hello(uint8_t pdu_type, struct isis_circuit *circuit, if (!memcmp(iih.sys_id, circuit->isis->sysid, ISIS_SYS_ID_LEN)) { zlog_warn( - "ISIS-Adj (%s): Received IIH with own sysid - discard", - circuit->area->area_tag); + "ISIS-Adj (%s): Received IIH with own sysid on %s - discard", + circuit->area->area_tag, circuit->interface->name); circuit->rej_adjacencies++; #ifndef FABRICD isis_notif_reject_adjacency( |