Usage Guidelines
To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user
group assignment is preventing you from using a command, contact your AAA administrator for assistance.
The
show msdp
sa-cache
command is used to examine the (S, G) entries and the
attributes, flags (L, E, EA), uptime, autonomous system number, and RP
addresses that are stored in the SA cache.
These guidelines
apply when this command is used:
- The
cache-sa-state
command is enabled by default.
- When you specify the
summary
keyword, the total number of cache, group, and source entries, and entries
advertised by each RP and autonomous system are displayed.
- When you specify two
addresses or names, an (S, G) entry corresponding to those addresses is
displayed.
- When you specify a single
group address, all sources for that group are displayed.
- When you specify no
options, the entire SA cache is displayed, excluding the PI flag entries.
Examples
This is a sample
output from the
show msdp
sa-cache
command:
RP/0/RP0/CPU0:router# show msdp sa-cache
MSDP Flags:
E - set MRIB E flag, L - domain local source is active,
EA - externally active source, PI - PIM is interested in the group,
DE - SAs have been denied.
Cache Entry:
(10.10.5.102, 239.1.1.1), RP 10.10.4.3, AS 20, 15:44:03/00:01:17
Learned from peer 10.10.2.2, RPF peer 10.10.2.2
SA's recvd 1049, Encapsulated data received: 0
grp flags: PI, src flags: E, EA, PI
This table
describes the significant fields shown in the display.
Table 4. show msdp
sa-cache Field Descriptions
Field
|
Description
|
(10.10.5.102, 239.1.1.1)
|
The first
address (source) is sending to the second address (group).
|
RP
10.10.4.3
|
Rendezvous
point (RP) address in the originating domain where the SA messages started.
|
MBGP/AS 20
|
RP is in
autonomous system AS 20 according to the unicast RPF table:
- If Multiprotocol Border
Gateway Protocol (MBGP) is not configured—RIB table 1.
- If MBGP is configured—RIB
table 2 or multicast table.
|
15:44:03/00:01:17
|
The route
has been cached for 15 hours, 44 minutes, and 3 seconds. If no SA message is
received in 1 minute and 17 seconds, the route is removed from the SA cache.
|
Encapsulated data received: 0
|
MSDP SA
captures any data information when the source starts so that the receiver does
not miss data when the SA path is established.
|
The following is
sample output using the
all
keyword option:
RP/0/RP0/CPU0:router# show msdp sa-cache all
MSDP Flags:
E - set MRIB E flag , L - domain local source is active,
EA - externally active source, PI - PIM is interested in the group,
DE - SAs have been denied. Timers age/expiration,
Cache Entry:
(*, 239.1.1.1), RP 0.0.0.0, AS 0, 06:32:18/expired
Learned from peer local, RPF peer local
SAs recvd 0, Encapsulated data received: 0 grp flags: PI, src flags:
This table
describes the significant fields shown in the display.
Table 5. show msdp
sa-cache all Field Descriptions
Field
|
Description
|
(*,
239.1.1.1)
|
Protocol
Independent Multicast (PIM) interest in the group due to a local Internet Group
Management Protocol (IGMP) join.
|
RP 0.0.0.0
|
There is
no RP associated with this entry.
|
AS 0
|
This entry
is 0, autonomous system (AS) rendezvous point (RP) is null.
|
06:32:18/expired
|
Route is
alive in hours, minutes, and seconds. Note that MSDP does not monitor this
route as it is received from the MRIB and PIM.
|
The following is
sample output using the
summary
keyword option:
RP/0/RP0/CPU0:router# show msdp sa-cache summary
Total # of SAs = 3
Total # of RPs = 2
Total # of Sources = 1
Total # of Groups = 3
Originator-RP SA total RPF peer
172.16.1.1 0 0.0.0.0
172.17.1.1 3 172.17.1.1
AS-num SA total
200 3
This table
describes the significant fields shown in the display.
Table 6. show msdp
sa-cache summary Field Descriptions
Field
|
Description
|
Total # of
SAs
|
Total
number of SAs that are currently active in the system.
|
Total # of
RPs
|
Total
number of RPs that have distributed the SA information to this system.
|
Total # of
Sources
|
Total
number of sources that are active from all domains.
|
Total # of
Groups
|
Total
number of groups to which sources are sending data from all domains.
|
Originator-RP
|
SA
information based on the individual RPs and the originating domains that
distributed them.
|
AS-num
|
SA
information based on the originating autonomous system.
|
The following is
sample output using the
asnum
keyword option:
RP/0/RP0/CPU0:router# show msdp sa-cache asnum 200
MSDP Flags:
E - set MRIB E flag , L - domain local source is active,
EA - externally active source, PI - PIM is interested in the group,
DE - SAs have been denied. Timers age/expiration,
Cache Entry:
(172.31.1.1, 239.1.1.1), RP 5.1.1.1, AS 200, 00:00:25/00:02:04
Learned from peer 5.1.1.1, RPF peer 172.17.1.1
SAs recvd 1, Encapsulated data received: 100
grp flags: none, src flags: EA
(172.31.1.1, 239.1.1.2), RP 172.17.1.1, AS 200, 00:00:16/00:02:13
Learned from peer 172.17.1.1, RPF peer 172.17.1.1
SAs recvd 1, Encapsulated data received: 100
grp flags: none, src flags: EA
(172.31.1.1, 239.1.1.3), RP 172.17.1.1, AS 200, 00:00:13/00:02:16
Learned from peer 172.17.1.1, RPF peer 172.17.1.1
SAs recvd 1, Encapsulated data received: 100
grp flags: none, src flags: EA