Hi,
can you please take a look and the interface counters:
Vlan2 is up, line protocol is up
Hardware is EtherSVI, address is 00d0.0311.bc0a (bia 00d0.0311.bc0a)
Description: XXXXXXXXXXXXxxxxx
Internet address is 10.10.0.1/16
MTU 1500 bytes, BW 1000000 Kbit, DLY 10 usec,
reliability 255/255, txload 81/255, rxload 21/255
Encapsulation ARPA, loopback not set
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:00:00, output 00:00:00, output hang never
Last clearing of "show interface" counters 00:13:12
Input queue: 0/75/66505/905 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 83523000 bits/sec, 31405 packets/sec
5 minute output rate 318748000 bits/sec, 40129 packets/sec
L2 Switched: ucast: 4257959 pkt, 523558331 bytes - mcast: 168681 pkt, 16311106 bytes
L3 in Switched: ucast: 23465567 pkt, 7876154325 bytes - mcast: 0 pkt, 0 bytes mcast
L3 out Switched: ucast: 30186592 pkt, 30574459275 bytes
24096816 packets input, 7934255792 bytes, 0 no buffer
Received 89844 broadcasts (3 IP multicast)
0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
31198482 packets output, 31009106292 bytes, 0 underruns
0 output errors, 0 interface resets
0 output buffer failures, 0 output buffers swapped out
It is a 6509 with Sup2 and there are a few thousand of users.
On this interface are 45 subnets (secondary ip addresses) for the users, please don't ask
It is a Cable ISP with DOCSIS 2.0 and 10 CMTS (Arris). The gateway for the users are not the CMTSs, it is the 6509 Sup2.
I think that there is to much broadcast traffic and the Switch is overloaded (40% cpu usage) and the switch is doing only ip forwarding with one
default route to the other ISP. There are no ACLs or full routing table.
The problem is that the switch is droping to much packets.
With NBAR enable the CPU usage jumps to 99%.
Mod Ports Card Type Model Serial No.
--- ----- -------------------------------------- ------------------ -----------
1 2 Catalyst 6000 supervisor 2 (Active) WS-X6K-SUP2-2GE
2 2 Catalyst 6000 supervisor 2 (Standby) WS-X6K-SUP2-2GE
3 16 16 port 1000mb GBIC ethernet WS-X6416-GBIC
4 16 16 port 1000mb GBIC ethernet WS-X6416-GBIC
5 48 SFM-capable 48 port 10/100/1000mb RJ45 WS-X6548-GE-TX
6 48 SFM-capable 48 port 10/100/1000mb RJ45 WS-X6548-GE-TX
7 48 48 port 10/100 mb RJ45 WS-X6348-RJ-45
8 48 48 port 10/100 mb RJ45 WS-X6348-RJ-45
Mod MAC addresses Hw Fw Sw Status
--- ---------------------------------- ------ ------------ ------------ -------
1 0001.6415.365a to 0001.6415.365b 2.2 7.1(1) 12.1(27b)E3 Ok
2 0001.6463.7124 to 0001.6463.7125 2.2 7.1(1) 12.1(27b)E3 Ok
3 0008.207f.3904 to 0008.207f.3913 2.2 5.4(2) 8.5(0.23)COS Ok
4 0030.19d8.db74 to 0030.19d8.db83 1.1 5.3(1) 8.5(0.23)COS Ok
5 0003.3232.c7c0 to 0003.3232.c7ef 10.1 7.2(1) 8.5(0.23)COS Ok
6 000e.8491.c470 to 000e.8491.c49f 7.0 7.2(1) 8.5(0.23)COS Ok
7 0001.9716.15c0 to 0001.9716.15ef 1.1 5.3(1) 8.5(0.23)COS Ok
8 0001.9716.1290 to 0001.9716.12bf 1.1 5.3(1) 8.5(0.23)COS Ok
Mod Sub-Module Model Serial Hw Status
--- --------------------------- --------------- --------------- ------- -------
1 Policy Feature Card 2 WS-F6K-PFC2 2.0 Ok
1 Cat6k MSFC 2 daughterboard WS-F6K-MSFC2 1.2 Ok
2 Policy Feature Card 2 WS-F6K-PFC2 2.0 Ok
2 Cat6k MSFC 2 daughterboard WS-F6K-MSFC2 1.2 Ok
