Hello, 6148 modules are known to have limited buffers. Have you checked that ?
As Keegan said, your hosts connected on the module may send too much packets causing the queues to fill too fast. Regards. Y. 2010/8/19 Keegan Holley <[email protected]> > Overruns have nothing to do with oversubscription. They are packets > dropped > due to the input ring being full. Basically the other end is filling the > queue faster than the 6509 can empty them. What's on the other end? Flow > control may help here if it's supported. > > On Wed, Aug 18, 2010 at 7:28 PM, Richard Roller <[email protected] > >wrote: > > > We're seeing overruns on a 6148 module in a 6509-E switch. The overruns > > would be considered normal if the ASIC port range was oversubscribed, > > however, according to interface traffic levels, it doesn't reach the 1Gb > > peak. Output from the 'show int summ' command below shows that Rxbs = > > ~70Mbps while Txbs = 17Mbs. (if my math is right, and assuming 17-24 is > one > > Gb ASIC) > > > > > > Interface IHQ IQD OHQ OQD RXBS RXPS TXBS TXPS TRTL > > --------------------------------------------------------------------- > > * GigabitEthernet6/17 0 0 0 0 0 0 0 0 0 > > * GigabitEthernet6/18 0 25082261 0 45001 18475000 4897 7468000 > > 6161 0 > > * GigabitEthernet6/19 0 0 0 0 0 0 0 0 0 > > * GigabitEthernet6/20 0 24751654 0 44925 19430000 1719 1927000 > > 2407 0 > > * GigabitEthernet6/21 0 0 0 0 0 0 0 0 0 > > * GigabitEthernet6/22 0 68270 0 0 15823000 1680 5358000 2661 > > 0 > > * GigabitEthernet6/23 0 0 0 0 0 0 0 0 0 > > * GigabitEthernet6/24 0 23521824 0 44281 17227000 1616 2507000 > > 2372 0 > > > > > > GigabitEthernet6/20 is up, line protocol is up (connected) > > Hardware is C6k 1000Mb 802.3, address is 0015.faca.ee7f (bia > > 0015.faca.ee7f) > > MTU 1500 bytes, BW 1000000 Kbit, DLY 10 usec, > > reliability 255/255, txload 1/255, rxload 5/255 > > Encapsulation ARPA, loopback not set > > Full-duplex, 1000Mb/s > > input flow-control is off, output flow-control is desired > > Clock mode is auto > > ARP type: ARPA, ARP Timeout 04:00:00 > > Last input never, output 00:00:54, output hang never > > Last clearing of "show interface" counters never > > Input queue: 0/2000/24753578/0 (size/max/drops/flushes); Total output > > drops: 44925 > > Queueing strategy: fifo > > Output queue: 0/40 (size/max) > > 5 minute input rate 21955000 bits/sec, 1941 packets/sec > > 5 minute output rate 2132000 bits/sec, 2292 packets/sec > > 13954662333 packets input, 16851357461096 bytes, 0 no buffer > > Received 40269073 broadcasts (409685 multicast) > > 0 runts, 0 giants, 0 throttles > > 0 input errors, 0 CRC, 0 frame, 24753578 overrun, 0 ignored > > 0 watchdog, 0 multicast, 0 pause input > > 0 input packets with dribble condition detected > > 24094021770 packets output, 7628772920146 bytes, 0 underruns > > 0 output errors, 0 collisions, 2 interface resets > > 0 babbles, 0 late collision, 0 deferred > > 0 lost carrier, 0 no carrier, 0 PAUSE output > > 0 output buffer failures, 0 output buffers swapped out > > > > GigabitEthernet6/22 is up, line protocol is up (connected) > > Hardware is C6k 1000Mb 802.3, address is 0015.faca.ee81 (bia > > 0015.faca.ee81) > > MTU 1500 bytes, BW 1000000 Kbit, DLY 10 usec, > > reliability 255/255, txload 1/255, rxload 5/255 > > Encapsulation ARPA, loopback not set > > Full-duplex, 1000Mb/s > > input flow-control is off, output flow-control is desired > > Clock mode is auto > > ARP type: ARPA, ARP Timeout 04:00:00 > > Last input never, output 00:00:08, output hang never > > Last clearing of "show interface" counters 07:30:26 > > Input queue: 0/2000/70255/0 (size/max/drops/flushes); Total output > drops: > > 0 > > Queueing strategy: fifo > > Output queue: 0/40 (size/max) > > 5 minute input rate 21401000 bits/sec, 2163 packets/sec > > 5 minute output rate 5655000 bits/sec, 2671 packets/sec > > 75174892 packets input, 71627016585 bytes, 0 no buffer > > Received 26519 broadcasts (444 multicast) > > 0 runts, 0 giants, 0 throttles > > 0 input errors, 0 CRC, 0 frame, 70255 overrun, 0 ignored > > 0 watchdog, 0 multicast, 0 pause input > > 0 input packets with dribble condition detected > > 95130820 packets output, 46628566836 bytes, 0 underruns > > 0 output errors, 0 collisions, 0 interface resets > > 0 babbles, 0 late collision, 0 deferred > > 0 lost carrier, 0 no carrier, 0 PAUSE output > > 0 output buffer failures, 0 output buffers swapped out > > > > Note that I recently cleared the counters on gi6/22 while all the others > > have not been cleared. The overruns steadily increment throughout the > day. > > > > Any idea what could be causing this? Even if I were to add up the traffic > > on > > all the other interfaces on slot 6, it still wouldn't reach 1Gb. Output > > from > > some other commands are listed below. Thanks. > > > > show catalyst6000 > > chassis MAC addresses: 1024 addresses from 0014.1b1d.5400 to > > 0014.1b1d.57ff > > traffic meter = 1% Never cleared > > peak = 20% reached at 02:43:18 EDT Mon Jun 14 2010 > > switching-clock: clock switchover and system reset is allowed > > > > show ver > > Cisco Internetwork Operating System Software > > IOS (tm) s72033_rp Software (s72033_rp-PK9SV-M), Version 12.2(18)SXD4, > > RELEASE SOFTWARE (fc1) > > Technical Support: http://www.cisco.com/techsupport > > Copyright (c) 1986-2005 by cisco Systems, Inc. > > Compiled Tue 22-Mar-05 15:33 by yiyan > > Image text-base: 0x4002100C, data-base: 0x42318000 > > > > ROM: System Bootstrap, Version 12.2(17r)S2, RELEASE SOFTWARE (fc1) > > BOOTLDR: s72033_rp Software (s72033_rp-PK9SV-M), Version 12.2(18)SXD4, > > RELEASE SOFTWARE (fc1) > > > > uptime is 27 weeks, 6 days, 7 hours, 45 minutes > > Time since switched to active is 27 weeks, 6 days, 7 hours, 45 minutes > > System returned to ROM by unknown reload cause - suspect > > boot_data[BOOT_COUNT] 0x0, BOOT_COUNT 0, BOOTDATA 19 (SP by power-on) > > System restarted at 10:28:29 EDT Thu Feb 4 2010 > > System image file is "sup-bootflash:s72033-pk9sv-mz.122-18.SXD4.bin" > > > > > > This product contains cryptographic features and is subject to United > > States and local country laws governing import, export, transfer and > > use. Delivery of Cisco cryptographic products does not imply > > third-party authority to import, export, distribute or use encryption. > > Importers, exporters, distributors and users are responsible for > > compliance with U.S. and local country laws. By using this product you > > agree to comply with applicable laws and regulations. If you are unable > > to comply with U.S. and local laws, return this product immediately. > > > > A summary of U.S. laws governing Cisco cryptographic products may be > found > > at: > > http://www.cisco.com/wwl/export/crypto/tool/stqrg.html > > > > If you require further assistance please contact us by sending email to > > [email protected]. > > > > cisco WS-C6509-E (R7000) processor (revision 1.1) with 458720K/65536K > bytes > > of memory. > > Processor board ID SMG0917N3MZ > > SR71000 CPU at 600Mhz, Implementation 0x504, Rev 1.2, 512KB L2 Cache > > Last reset from power-on > > X.25 software, Version 3.0.0. > > Bridging software. > > 121 Virtual Ethernet/IEEE 802.3 interface(s) > > 214 Gigabit Ethernet/IEEE 802.3 interface(s) > > 1917K bytes of non-volatile configuration memory. > > 8192K bytes of packet buffer memory. > > > > 65536K bytes of Flash internal SIMM (Sector size 512K). > > Configuration register is 0x2102 > > > > > > sho mod > > Mod Ports Card Type Model > Serial > > No. > > --- ----- -------------------------------------- ------------------ > > ----------- > > 1 48 SFM-capable 48 port 10/100/1000mb RJ45 WS-X6548-GE-TX > > SAL091594HK > > 2 4 SLB Application Processor Complex WS-X6066-SLB-APC > > SAD093109YD > > 3 48 CEF720 48 port 10/100/1000mb Ethernet WS-X6748-GE-TX > > SAL09211LA8 > > 4 48 48 port 10/100/1000mb EtherModule WS-X6148-GE-TX > > SAL11499266 > > 5 2 Supervisor Engine 720 (Active) WS-SUP720-3B > > SAD0915018N > > 6 48 48 port 10/100/1000mb EtherModule WS-X6148-GE-TX > > SAL094865J7 > > 7 16 16 port 1000mb GBIC ethernet WS-X6416-GBIC > > SAD0530058M > > > > Mod MAC addresses Hw Fw Sw > > Status > > --- ---------------------------------- ------ ------------ ------------ > > ------- > > 1 0013.80f5.68a8 to 0013.80f5.68d7 10.1 7.2(1) 8.3(0.156)RO Ok > > 2 0014.a9bd.20f8 to 0014.a9bd.20ff 1.8 4.2(12) Ok > > 3 0013.c473.0af8 to 0013.c473.0b27 2.2 12.2(14r)S5 12.2(18)SXD4 Ok > > 4 001e.4a45.4850 to 001e.4a45.487f 7.2 7.2(1) 8.3(0.156)RO Ok > > 5 0011.5cb4.afdc to 0011.5cb4.afdf 4.3 8.1(3) 12.2(18)SXD4 Ok > > 6 0015.faca.ee6c to 0015.faca.ee9b 1.1 7.2(1) 8.3(0.156)RO Ok > > 7 0003.32bd.1fc2 to 0003.32bd.1fd1 1.2 5.4(2) 8.3(0.156)RO Ok > > > > Mod Sub-Module Model Serial Hw > > Status > > --- --------------------------- ------------------ ------------ ------- > > ------- > > 3 Centralized Forwarding Card WS-F6700-CFC SAL0917A6G6 2.0 Ok > > 5 Policy Feature Card 3 WS-F6K-PFC3B SAD09120A3A 2.0 Ok > > 5 MSFC3 Daughterboard WS-SUP720 SAD091204G5 2.3 Ok > > > > Mod Online Diag Status > > --- ------------------- > > 1 Pass > > 2 Pass > > 3 Pass > > 4 Pass > > 5 Pass > > 6 Pass > > 7 Pass > > _______________________________________________ > > cisco-nsp mailing list [email protected] > > https://puck.nether.net/mailman/listinfo/cisco-nsp > > archive at http://puck.nether.net/pipermail/cisco-nsp/ > > > > > > > _______________________________________________ > cisco-nsp mailing list [email protected] > https://puck.nether.net/mailman/listinfo/cisco-nsp > archive at http://puck.nether.net/pipermail/cisco-nsp/ > -- Youssef BENGELLOUN-ZAHR ……………………………………………… Ingénieur Réseaux et Télécoms Technopole de l'Aube en Champagne - BP 601 - 10901 TROYES Cedex 9 Agence Paris : 6, rue Charles Floquet - 92120 MONTROUGE Tel +33 (0) 825 000 720 Tel. direct +33 (0) 1 77 35 59 14 Tel. portable +33 (0) 6 22 42 63 80 Email [email protected] ……………………………………………………………………………….....www.720.fr _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
