我有使用 Java 应用程序多播 UDP 流的 linux 机器。多猫通过 ciso 路由器。我看到接收器丢失了很多数据包。检查路由器中的端口显示超限计数器增加。在互联网上搜索表明这些是由于来自 TX 机器的微爆而发生的。我也猜想一样，因为下降随着时间的推移而增加，可能是 java 应用程序随着时间的推移变得不稳定，然后开始输出数据包，它的错误。也许我可以更改路由器中的某些内容？

编辑

以下是思科硬件：

Cisco WS-C6504-E 带 FAN-MOD-4HS 空 4 插槽 6500 增强型机箱 1

Cisco PWR-2700-AC/4 2700W 交流电源，适用于 7604 6504-E #12025 X 2 2

Cisco Catalyst 6500 7600 Supervisor 720 模块 - WS-SUP720-3BXL WS-F6K-PFC3BXL 1

思科 WS-X6548-GE-TX 48 端口 1G 铜缆以太网模块

以下是 CPU 利用率：

RHE-001#show fabric utilization all
 slot    channel      speed    Ingress %     Egress %
    1          0        20G            0            0
    2          0         8G           12            2
    3          0         8G            9           14
    4          0         8G            0           13

RHE-001#

以下是接口统计信息：

RHE-001#show int GigabitEthernet 2/4
GigabitEthernet2/4 is up, line protocol is up (connected)
  Hardware is C6k 1000Mb 802.3, address is 0023.04dd.0d00 (bia 0023.04dd.0d00)
  Internet address is 10.0.1.13/30
  MTU 1500 bytes, BW 1000000 Kbit, DLY 10 usec,
     reliability 255/255, txload 7/255, rxload 21/255
  Encapsulation ARPA, loopback not set
  Keepalive set (10 sec)
  Full-duplex, 1000Mb/s, media type is 10/100/1000BaseT
  input flow-control is off, output flow-control is off
  Clock mode is auto
  ARP type: ARPA, ARP Timeout 04:00:00
  Last input 00:00:27, output 00:00:05, output hang never
  Last clearing of "show interface" counters 5d08h
  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
  Queueing strategy: fifo
  Output queue: 0/40 (size/max)
  5 minute input rate 83389000 bits/sec, 7648 packets/sec
  5 minute output rate 30360000 bits/sec, 2786 packets/sec
  L2 Switched: ucast: 32 pkt, 2048 bytes - mcast: 0 pkt, 0 bytes
  L3 in Switched: ucast: 0 pkt, 0 bytes - mcast: 3542591539 pkt, 4825009676118 bytes mcast
  L3 out Switched: ucast: 0 pkt, 0 bytes mcast: 2879819193 pkt, 3922313740866 bytes
     3542548642 packets input, 4830700273704 bytes, 0 no buffer
     Received 3542548610 broadcasts (3542458124 IP multicasts)
     0 runts, 0 giants, 0 throttles
     0 input errors, 0 CRC, 0 frame, 4243199 overrun, 0 ignored
     0 watchdog, 0 multicast, 0 pause input
     0 input packets with dribble condition detected
     1276819687 packets output, 1738995021346 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
RHE-001#

正如我们所看到的，溢出计数器在增加。

缓冲器：

RHE-001#show buffers
Buffer elements:
     499 in free list (500 max allowed)
     623919821 hits, 0 misses, 0 created

Public buffer pools:
Small buffers, 104 bytes (total 1024, permanent 1024):
     1021 in free list (128 min, 2048 max allowed)
     183749828 hits, 0 misses, 0 trims, 0 created
     0 failures (0 no memory)
Medium buffers, 256 bytes (total 3000, permanent 3000):
     2999 in free list (64 min, 3000 max allowed)
     22779465 hits, 0 misses, 0 trims, 0 created
     0 failures (0 no memory)
Middle buffers, 600 bytes (total 512, permanent 512):
     510 in free list (64 min, 1024 max allowed)
     5814462 hits, 0 misses, 0 trims, 0 created
     0 failures (0 no memory)
Big buffers, 1536 bytes (total 1000, permanent 1000):
     999 in free list (64 min, 1000 max allowed)
     2009529750 hits, 0 misses, 0 trims, 0 created
     0 failures (0 no memory)
VeryBig buffers, 4520 bytes (total 10, permanent 10):
     10 in free list (0 min, 100 max allowed)
     363 hits, 0 misses, 0 trims, 0 created
     0 failures (0 no memory)
Large buffers, 9240 bytes (total 8, permanent 8):
     8 in free list (0 min, 10 max allowed)
     57 hits, 0 misses, 0 trims, 0 created
     0 failures (0 no memory)
Huge buffers, 18024 bytes (total 2, permanent 2):
     2 in free list (0 min, 4 max allowed)
     41 hits, 0 misses, 0 trims, 0 created
     0 failures (0 no memory)

Interface buffer pools:
Syslog ED Pool buffers, 600 bytes (total 150, permanent 150):
     118 in free list (150 min, 150 max allowed)
     10421 hits, 10168 misses
LI Middle buffers, 600 bytes (total 512, permanent 256, peak 512 @ 7w0d):
     256 in free list (256 min, 768 max allowed)
     171 hits, 85 fallbacks, 0 trims, 256 created
     0 failures (0 no memory)
     256 max cache size, 256 in cache
     0 hits in cache, 0 misses in cache
EOBC0/0 buffers, 1524 bytes (total 2400, permanent 2400):
     1200 in free list (0 min, 2400 max allowed)
     1200 hits, 0 fallbacks
     1200 max cache size, 680 in cache
     2369496864 hits in cache, 0 misses in cache
LI Big buffers, 1536 bytes (total 512, permanent 256, peak 512 @ 7w0d):
     256 in free list (256 min, 768 max allowed)
     171 hits, 85 fallbacks, 0 trims, 256 created
     0 failures (0 no memory)
     256 max cache size, 256 in cache
     0 hits in cache, 0 misses in cache
IPC buffers, 4096 bytes (total 2352, permanent 2352):
     2242 in free list (784 min, 7840 max allowed)
     333747144 hits, 0 fallbacks, 0 trims, 0 created
     0 failures (0 no memory)
LI Very Big buffers, 4520 bytes (total 257, permanent 128, peak 257 @ 7w0d):
     129 in free list (128 min, 384 max allowed)
     85 hits, 43 fallbacks, 4101 trims, 4230 created
     0 failures (0 no memory)
     128 max cache size, 128 in cache
     0 hits in cache, 0 misses in cache
Private Huge IPC buffers, 18024 bytes (total 2, permanent 2):
     2 in free list (1 min, 4 max allowed)
     0 hits, 0 misses, 0 trims, 0 created
     0 failures (0 no memory)
Private Huge buffers, 65280 bytes (total 2, permanent 2):
     2 in free list (1 min, 4 max allowed)
     787 hits, 0 misses, 0 trims, 0 created
     0 failures (0 no memory)

Header pools:


RHE-001#

编辑 2

没有开关。组播发送机和接收机直接连接到cisco路由器。