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| author | Daniel Walton <dwalton@cumulusnetworks.com> | 2016-10-21 19:51:05 +0200 |
|---|---|---|
| committer | Daniel Walton <dwalton@cumulusnetworks.com> | 2016-10-21 19:51:05 +0200 |
| commit | aac9ef6cb0169ea96debe2872066021608631c16 (patch) | |
| tree | 95254a50d8573ce5b5c9ca622a8d358a14974a96 /bgpd/bgp_aspath.c | |
| parent | bgpd: Fix rfapi qobj use. (diff) | |
| download | frr-aac9ef6cb0169ea96debe2872066021608631c16.tar.xz frr-aac9ef6cb0169ea96debe2872066021608631c16.zip | |
bgpd: add 'neighbor x.x.x.x allowas-in origin' knob
Signed-off-by: Daniel Walton <dwalton@cumulusnetworks.com>
Reviewed-by: Don Slice <dslice@cumulusnetworks.com>
Ticket: CM-13207
normal table on spine-1....we do not see 6.0.0.10 (spine-2's loopback)
spine-1 and spine-2 are in AS 65200
superm-redxp-05# show ip bgp
BGP table version is 13, local router ID is 6.0.0.9
Status codes: s suppressed, d damped, h history, * valid, > best, =
multipath,
i internal, r RIB-failure, S Stale, R Removed
Origin codes: i - IGP, e - EGP, ? - incomplete
Network Next Hop Metric LocPrf Weight Path
*> 6.0.0.5/32 swp1 0 0 65101 ?
*> 6.0.0.6/32 swp2 0 0 65101 ?
*> 6.0.0.7/32 swp3 0 0 65104 ?
*> 6.0.0.8/32 swp4 0 0 65104 ?
*> 6.0.0.9/32 0.0.0.0 0 32768 ?
*= 6.0.0.11/32 swp2 0 65101 65001 ?
*> swp1 0 65101 65001 ?
*= 6.0.0.12/32 swp2 0 65101 65002 ?
*> swp1 0 65101 65002 ?
*= 6.0.0.13/32 swp4 0 65104 65001 ?
*> swp3 0 65104 65001 ?
*= 6.0.0.14/32 swp4 0 65104 65002 ?
*> swp3 0 65104 65002 ?
Displayed 9 out of 13 total prefixes
superm-redxp-05#
spine-1 with "neighbor x.x.x.x allowas-in origin", we now see 6.0.0.10
superm-redxp-05# show ip bgp
BGP table version is 14, local router ID is 6.0.0.9
Status codes: s suppressed, d damped, h history, * valid, > best, =
multipath,
i internal, r RIB-failure, S Stale, R Removed
Origin codes: i - IGP, e - EGP, ? - incomplete
Network Next Hop Metric LocPrf Weight Path
*> 6.0.0.5/32 swp1 0 0 65101 ?
*> 6.0.0.6/32 swp2 0 0 65101 ?
*> 6.0.0.7/32 swp3 0 0 65104 ?
*> 6.0.0.8/32 swp4 0 0 65104 ?
* 6.0.0.9/32 swp2 0 65101 65200 ?
* swp1 0 65101 65200 ?
* swp3 0 65104 65200 ?
* swp4 0 65104 65200 ?
*> 0.0.0.0 0 32768 ?
*= 6.0.0.10/32 swp2 0 65101 65200 ?
*> swp1 0 65101 65200 ?
*= swp3 0 65104 65200 ?
*= swp4 0 65104 65200 ?
*= 6.0.0.11/32 swp2 0 65101 65001 ?
*> swp1 0 65101 65001 ?
*= 6.0.0.12/32 swp2 0 65101 65002 ?
*> swp1 0 65101 65002 ?
*= 6.0.0.13/32 swp4 0 65104 65001 ?
*> swp3 0 65104 65001 ?
*= 6.0.0.14/32 swp4 0 65104 65002 ?
*> swp3 0 65104 65002 ?
Displayed 10 out of 21 total prefixes
superm-redxp-05#
The only as-paths with 65200 that made it through were the ones that
originated from 65200
superm-redxp-05# show ip bgp regexp _65200_
BGP table version is 14, local router ID is 6.0.0.9
Status codes: s suppressed, d damped, h history, * valid, > best, =
multipath,
i internal, r RIB-failure, S Stale, R Removed
Origin codes: i - IGP, e - EGP, ? - incomplete
Network Next Hop Metric LocPrf Weight Path
* 6.0.0.9/32 swp2 0 65101 65200 ?
* swp1 0 65101 65200 ?
* swp3 0 65104 65200 ?
* swp4 0 65104 65200 ?
*= 6.0.0.10/32 swp2 0 65101 65200 ?
*> swp1 0 65101 65200 ?
*= swp3 0 65104 65200 ?
*= swp4 0 65104 65200 ?
Displayed 2 out of 21 total prefixes
superm-redxp-05#
Diffstat (limited to 'bgpd/bgp_aspath.c')
| -rw-r--r-- | bgpd/bgp_aspath.c | 27 |
1 files changed, 25 insertions, 2 deletions
diff --git a/bgpd/bgp_aspath.c b/bgpd/bgp_aspath.c index 70d4f0493..bf1e92b26 100644 --- a/bgpd/bgp_aspath.c +++ b/bgpd/bgp_aspath.c @@ -1163,8 +1163,8 @@ aspath_firstas_check (struct aspath *aspath, as_t asno) return 0; } -int -aspath_get_firstas (struct aspath *aspath) +unsigned int +aspath_get_first_as (struct aspath *aspath) { if (aspath == NULL || aspath->segments == NULL) return 0; @@ -1172,6 +1172,29 @@ aspath_get_firstas (struct aspath *aspath) return aspath->segments->as[0]; } +unsigned int +aspath_get_last_as (struct aspath *aspath) +{ + int i; + unsigned int last_as = 0; + const struct assegment *seg; + + if (aspath == NULL || aspath->segments == NULL) + return last_as; + + seg = aspath->segments; + + while (seg) + { + if (seg->type == AS_SEQUENCE || seg->type == AS_CONFED_SEQUENCE) + for (i = 0; i < seg->length; i++) + last_as = seg->as[i]; + seg = seg->next; + } + + return last_as; +} + /* AS path loop check. If aspath contains asno then return >= 1. */ int aspath_loop_check (struct aspath *aspath, as_t asno) |