[U]
[V]
vpdn aaa override-server {hostname | ip-address}
[12.1] global configuration command specifies the name or ip address of a designate AAA server to be used for VPDN authorization.
[W]
who
Alias for show users
write core
Does a full core dump, reboots router
[X]
x29 inviteclear-time none
The router will not send out a x29 invite-to-clear but a x25 clear (disconnect)to the X.25 host. This is necessary, if your X.25 host has problems receiving X.29 invite-to-clear.
[Y]
[Z]
[Catalyst 5000 and 6000]
enable engineer
this prompts for a password, which has the form:
passwordHWFWSWenablepass
password, enablepass: whatever passwords are on the box
HW, FW, SW: first two digits of the hardware, firmware, software
versions running on the Supervisor, shown by show version.
Example: password and enablepass are cisco, show version says HW: 3.2,
FW: 5.3(1), SW: 5.4(4)
The enable engineer password would be cisco325354cisco
[5000]
set trace
If you enter set trace ?, nothing appears however if you enter set trace followed by anything else you will see the command options. Be careful with this command, make a backup of the configuration FIRST. You can saturate the processor if it is
used inappropriately the Catalyst may reboot constantly or become non responsive upon boot! In this case you have to break in and wipe the config very quickly.
[router bgp ASN]
neighbor ctalkb-out filter-as 100 d
Filter-as is an obsolete subcommand
use filter-list instead
neighbor <customer-router> translate-update [nlri multicast unicast]
Redistribute between BGP and MBGP
bgp redistribute-internal
Redistribute I-BGP routes in the other routing-protocol
[router eigrp X]
eigrp event-log-size xxx
sets the event log size when used with “show ip eigrp event”
Default is 500 on 12.0.11
[no] eigrp event-logging
controls logging of eigrp events on a per bases
[no] eigrp event-log-size
Set event log sixe to events; 0 deletes event log buffers
[no] command resets event log and SIA log size to 500 events
[no] eigrp log-event-type [dual] [xmit] [transport]
Configure the set of event types to log
[no] eigrp kill-everyone
Kill all adjacencies on an SIA event or a neighbor down event
[no] eigrp log-neighbor-changes
log changes in peer status of neighbors
[router isis]
partition-avoidance
[Filesystem]
cd system:/vfiles and ‘dir’ and there are three files available:
tmasinfo
tmstats_ascii
tmstast_binary
File format tmstats.ascii:
Header – version, address, aggreg, sysuptime, UTC, NTP, duration Per-prefix entry format – prefix type, dest/mask, sysuptime, pkts in, bytes in, pkts out, bytes out Per-tunnel entry format – tunnel type, tunnel id
UNDOCUMENTED OSPF, EIGRP AND INTERFACE COMMANDS
UNDOCUMENTED OSPF COMMANDS
SHOW IP OSPF EVENTS
This is a sample output from the command:
sh ip o e
1 307188 Generic: ex_delete_old_routes 0×7
2 307188 Generic: spf_ex 0×7
3 307188 Generic: ex_delete_old_routes 0×5
4 307188 Insert route list INFO: 0×24DB54 0×0 0
5 307188 Insert route list: 150.0.0.0 0×24E194 5
6 307188 Delete route list: 150.0.0.0 0×24E194 5
7 307188 Insert route list INFO: 0×24D834 0×0 0
8 307188 Insert route list: 134.4.6.8 0×24DB54 5
9 307192 Delete route list: 134.4.6.8 0×24DB54 5
10 307192 Insert route list INFO: 0×24E004 0×0 0
11 307192 Insert route list: 134.4.1.1 0×24D834 5
12 307192 Delete route list: 134.4.1.1 0×24D834 5
13 307192 Insert route list INFO: 0×24D5A8 0×0 0
14 307192 Insert route list: 44.0.0.0 0×24E004 5
15 307196 Delete route list: 44.0.0.0 0×24E004 5
16 307196 Insert route list INFO: 0×0 0×0 0
17 307196 Insert route list: 4.0.0.0 0×24D5A8 5
18 307196 Delete route list: 4.0.0.0 0×24D5A8 5
19 307196 Generic: spf_ex 0×5
20 307200 Generic: sum_delete_old_routes 0×0
(other similar lines are surpressed)
SHOW IP OSPF STATISTICS
This is a sample output from the command:
sh ip o stat
Area 0: SPF algorithm executed 5 times
Area 4: SPF algorithm executed 4 times
SPF calculation time
Delta T Intra D-Intra Summ D-Summ Ext D-Ext Total Reason
00:35:30 0 4 0 0 0 0 4 R, N, SN, SA, X
00:35:20 8 0 0 0 0 0 12 R, N, SN, SA,
00:35:10 8 4 4 0 0 0 20 R, N, SN,
00:32:45 0 0 0 0 0 0 4 R,
00:32:35 8 4 0 0 0 0 16 R, SN,
00:23:05 16 4 0 0 8 0 36 R, X
Avg. and Accumulated time of the last 250 process_ase()
Avg. Accumulated
ASBR-lookup 0, 0
Forw-Addr-lookup 0, 0
compare metric 0, 0
add_ex-route 0, 0
route_delete 0, 0
Avg. and Accumulated time of the last 250 add_ex_route
Avg. Accumulated
ex_delete_route_list 0, 0
network_update 0, 0
ex_insert_route_list 0, 0
Avg. and Accumulated time of the last 250 summary LSA process
Avg. Accumulated
ABR-lookup 0, 0
destination-lookup 0, 0
add summary route 0, 4
route_delete & build_inter_route_all 0, 0
SHOW IP OSPF MAXAGE (when testing above command I found you must be in the enable mode to see anything)
This is a sample output from the command:
Router#sh ip o maxage AS System 1 Maxage delete timer due in NEVER Router#
SHOW IP OSPF BAD-CHECKSUM
This is a sample output from the command:
Router#sh ip o bad OSPF packets received with bad checksum Checksum received – 28B7, computed – 20B7 Raw data 45C0 006C 8574 0000 0159 C770 C264 C92A E000 0005 0204 0058 C140 AD0E 0000 0000 28B7 0000 0000 0000 0000 0000 0000 0001 0003 0201 C140 8FFE C140 8FFE 8000 284A C90D 003C 0100 0003 C140 8F49 C140 8F4A 0100 030D C140 8F48 FFFF FFFC 0300 030D C140 8FC0 FFFF FFC0 0B00 000A
Checksum received – 28B3, computed – 20B3 Raw data 45C0 006C 8586 0000 0159 C75E C264 C92A E000 0005 0204 0058 C140 AD0E 0000 0000 28B3 0000 0000 0000 0000 0000 0000 0001 0007 0201 C140 8FFE C140 8FFE 8000 284A C90D 003C 0100 0003 C140 8F49 C140 8F4A 0100 030D C140 8F48 FFFF FFFC 0300 030D C140 8FC0 FFFF FFC0 0B00 000A
Checksum received – 4C93, computed – 4493 Raw data 45C0 006C 8BD6 0000 0159 C10E C264 C92A E000 0005 0204 0058 C140 AD0E 0000 0000 4C93 0000 0000 0000 0000 0000 0000 0001 0003 2201 C15E D3AE C15E D3AE 8000 3127 AB29 003C 0000 0003 C15E D3A0 FFFF FFF0 0300 000A C140 8F32 C140 1286 0100 030D C140 1284 FFFF FFFC 0B00 030D
SHOW IP OSPF DELETE-LIST
This is a sample output from the command:
sh ip o dele
(BTW: Watch out ! There is a famous command “sh ip o d “, which usually translates to “show ip ospf database” in most IOS’es. I experienced with some versions that instead the database you would be shown the delete list !!! )
AS System 4
Area BACKBONE(0)
ROUTER and NETWORK LSDB delete list
Dest: 134.4.6.16, Type: 0, Metric: 781, ADV RTR: 134.4.2.2
Path:
gateway 134.4.6.18, interface Serial1/1.1
Dest: 134.4.6.17, Type: 0, Metric: 781, ADV RTR: 134.4.5.5
Path:
gateway 134.4.6.17, interface Serial1/1.1
Dest: 134.4.5.5, Type: 0, Metric: 782, ADV RTR: 134.4.5.5
Path:
gateway 134.4.6.17, interface Serial1/1.1
Dest: 134.4.3.3, Type: 1, Metric: 845, ADV RTR: 134.4.3.3
Path:
gateway 134.4.6.17, interface Serial1/1.1
SUMMARY NET and ASBR LSDB delete list
Dest: 134.4.3.3, Type: 3, Metric: 846, ADV RTR: 134.4.3.3
Path:
gateway 134.4.6.17, interface Serial1/1.1
TYPE-7 EXTERNAL LSDB delete list
Area 4
ROUTER and NETWORK LSDB delete list
Dest: 134.4.4.64, Type: 0, Metric: 10, ADV RTR: 134.4.2.2
Path:
gateway 134.4.4.65, interface Ethernet0/0
Dest: 134.4.3.0, Type: 0, Metric: 6, ADV RTR: 134.4.2.2
Path:
gateway 134.4.3.1, interface TokenRing0/0
Dest: 134.4.2.2, Type: 0, Metric: 1, ADV RTR: 134.4.2.2
Path:
gateway 134.4.2.2, interface Loopback0
SUMMARY NET and ASBR LSDB delete list
TYPE-7 EXTERNAL LSDB delete list
EXTERNAL LSDB delete list
SHOW IP OSPF TIMERS LSA
This is a sample output from the command:
OSPF Router with ID (134.8.5.5) (Process ID 1)
Group size 5, Head 3, Search Index 4, Interval 240 sec Next update due in 00:04:06 Current time 2154 Index 0 Timestamp 2400 Index 1 Timestamp 2664 Index 2 Timestamp 2912 Index 3 Timestamp 3172 Index 4 Timestamp 3422
Failure Head 0, Last 0 LSA group failure logged
Another sample output from the command (thanks to Atreides). The difference is the Head-info.
OSPF Router with ID (215.224.32.13) (Process ID 1)
Group size 5, Head 0, Search Index 4, Interval 240 sec Next update due in 00:00:15 Current time 64496 Index 0 Timestamp 64511 Index 1 Timestamp 64768 Index 2 Timestamp 65014 Index 3 Timestamp 65258 Index 4 Timestamp 65509
Failure Head 0, Last 0 LSA group failure logged
