Поставил себе минимальный Inter-VLAN routing solution от Cisco: c2620+c2924.
Наблюдается пара проблем, что хотелось бы решить:
Проблема 1.
-----------
При добавлении/изменении IP адреса на Fa0/0.XX sub-interface'е на
несколько секунд киска вообще перестает откликаться и как-либо роутить
пакеты. Что крайне неприятно, у учетом того, что через нее в это время
бежит трафик на десятки интерфейсов.
Например:
cs6(config)#interface FastEthernet 0/0.17
cs6(config-subif)#ip address 213.184.131.25 255.255.255.252
[пауза несколько секунд -- иногда upto 20-30 сек.]
cs6(config-subif)#
cs6(config-subif)#
[вот, уже отлипло]
Тем не менее -- общая загрузка по 'show proc' на 2620 - менее 10%,
на 2924 -- в районе 30%.
Проблема 2.
-----------
В целом трафик летает без потерь. Но похоже там, где пакет более 1480 байт
-- начинаются потери.
Например:
$ ping -c100 -s1472 -n 213.184.128.y
PING 213.184.128.y (213.184.128.y) from 172.x.x.x : 1472(1500)
bytes of data.
1480 bytes from 213.184.128.y: icmp_seq=0 ttl=253 time=91.0 ms
...
-- все хорошо. Никаких потерь. На всех проходящих через нее роутах.
Но вот это:
$ ping -c100 -s1473 -n 213.184.128.y
PING 213.184.128.y (213.184.128.y) from 172.x.x.x : 1473(1501)
bytes of data.
1481 bytes from 213.184.128.y: icmp_seq=0 ttl=253 time=92.7 ms
-- уже периодически теряется.
Any help is welcome.
Спасибо.
Sincerely yours,
Ilia Zubkov,
Educational Network technical director
P.S. tech. details:
for 2620:
cs6(c2620)#sh ver
Cisco Internetwork Operating System Software
IOS (tm) C2600 Software (C2600-IS-M), Version 12.0(7)T, RELEASE SOFTWARE
(fc2)
Copyright (c) 1986-1999 by cisco Systems, Inc.
Compiled Tue 07-Dec-99 02:21 by phanguye
Image text-base: 0x80008088, data-base: 0x80C524F8
ROM: System Bootstrap, Version 11.3(2)XA4, RELEASE SOFTWARE (fc1)
cs6 uptime is 20 hours, 5 minutes
System returned to ROM by power-on
System restarted at 00:24:44 UTC Wed Feb 23 2000
System image file is "flash:c2600-is-mz.120-7.T.bin"
cisco 2620 (MPC860) processor (revision 0x100) with 53248K/12288K bytes of
memory.
Processor board ID JAB0314084R (792612315)
M860 processor: part number 0, mask 49
Bridging software.
X.25 software, Version 3.0.0.
1 FastEthernet/IEEE 802.3 interface(s)
32K bytes of non-volatile configuration memory.
8192K bytes of processor board System flash (Read/Write)
cs6(c2620)#show processes cpu
CPU utilization for five seconds: 8%/8%; one minute: 4%; five minutes: 3%
cs6(c2620)#show processes memory
Total: 33927344, Used: 4134032, Free: 29793312
cs6(c2620)#sh interfaces Fa0/0
FastEthernet0/0 is up, line protocol is up
Hardware is AmdFE, address is 00d0.582b.0ea0 (bia 00d0.582b.0ea0)
MTU 1500 bytes, BW 100000 Kbit, DLY 100 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Full-duplex, 100Mb/s, 100BaseTX/FX
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 never
Queueing strategy: fifo
Output queue 0/40, 130 drops; input queue 1/75, 0 drops
5 minute input rate 198000 bits/sec, 96 packets/sec
5 minute output rate 214000 bits/sec, 81 packets/sec
8756793 packets input, 3521521230 bytes
Received 763347 broadcasts, 0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 0 multicast
0 input packets with dribble condition detected
8042753 packets output, 3713077758 bytes, 0 underruns
0 output errors, 0 collisions, 36 interface resets
0 babbles, 0 late collision, 28429 deferred
0 lost carrier, 0 no carrier
0 output buffer failures, 0 output buffers swapped out
cs6(c2620)#sh interfaces Fa0/0.17
FastEthernet0/0.17 is up, line protocol is up
Hardware is AmdFE, address is 00d0.582b.0ea0 (bia 00d0.582b.0ea0)
Internet address is 213.184.131.25/30
MTU 1500 bytes, BW 100000 Kbit, DLY 100 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ISL Virtual LAN, Color 17.
ARP type: ARPA, ARP Timeout 04:00:00
for WS-C2924-XL-EN:
c2900#sh ver
Cisco Internetwork Operating System Software
IOS (tm) C2900XL Software (C2900XL-C3H2S-M), Version 12.0(5.1)XP,
MAINTENANCE INTERIM SOFTWARE
Copyright (c) 1986-1999 by cisco Systems, Inc.
Compiled Fri 10-Dec-99 10:37 by cchang
Image text-base: 0x00003000, data-base: 0x002D84CC
ROM: Bootstrap program is C2900XL boot loader
c2900 uptime is 20 hours, 6 minutes
System returned to ROM by power-on
System restarted at 03:23:45 MSK Wed Feb 23 2000
System image file is "flash:c2900XL-c3h2s-mz-120.5.1-XP.bin"
cisco WS-C2924-XL (PowerPC403GA) processor (revision 0x11) with
8192K/1024K bytes of memory.
Processor board ID 0x0E, with hardware revision 0x01
Last reset from power-on
Processor is running Enterprise Edition Software
Cluster command switch capable
Cluster member switch capable
24 FastEthernet/IEEE 802.3 interface(s)
32K bytes of flash-simulated non-volatile configuration memory.
Base ethernet MAC Address: 00:D0:58:87:25:80
Motherboard assembly number: 73-3382-04
Power supply part number: 34-0834-01
Motherboard serial number: FAA03139HLP
Power supply serial number: PHI024601MU
Model revision number: A0
Model number: WS-C2924-XL-EN
System serial number: FAA0319L0Q8
Configuration register is 0xF
c2900#sh processes cpu
CPU utilization for five seconds: 29%/6%; one minute: 30%; five minutes: 30%
c2900#sh processes memory
Total: 4026856, Used: 1885656, Free: 2141200
c2900#sh interfaces Fa0/1
FastEthernet0/1 is up, line protocol is up
Hardware is Fast Ethernet, address is 00d0.5887.2581 (bia
00d0.5887.2581)
MTU 1500 bytes, BW 100000 Kbit, DLY 100 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive not set
Auto-duplex (Full), Auto Speed (100), 100BaseTX/FX
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:00:36, output 00:00:00, output hang never
Last clearing of "show interface" counters never
Queueing strategy: fifo
Output queue 0/40, 0 drops; input queue 0/75, 0 drops
5 minute input rate 169000 bits/sec, 77 packets/sec
5 minute output rate 176000 bits/sec, 91 packets/sec
8042450 packets input, 3507736004 bytes
Received 49206 broadcasts, 0 runts, 19 giants, 0 throttles
7255 input errors, 7255 CRC, 0 frame, 0 overrun, 1 ignored
0 watchdog, 38051 multicast
0 input packets with dribble condition detected
8832519 packets output, 3581046400 bytes, 0 underruns
0 output errors, 0 collisions, 1 interface resets
0 babbles, 0 late collision, 0 deferred
0 lost carrier, 0 no carrier
0 output buffer failures, 0 output buffers swapped out
c2900#sh interfaces Fa0/17
FastEthernet0/17 is up, line protocol is up
Hardware is Fast Ethernet, address is 00d0.5887.2591 (bia
00d0.5887.2591)
MTU 1500 bytes, BW 10000 Kbit, DLY 1000 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive not set
Auto-duplex (Half), Auto Speed (10), 100BaseTX/FX
ARP type: ARPA, ARP Timeout 04:00:00
Last input never, output 00:00:00, output hang never
Last clearing of "show interface" counters never
Queueing strategy: fifo
Output queue 0/40, 0 drops; input queue 0/75, 0 drops
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
1629 packets input, 461616 bytes
Received 336 broadcasts, 0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 79 multicast
0 input packets with dribble condition detected
1844 packets output, 96643 bytes, 0 underruns
0 output errors, 1 collisions, 1 interface resets
0 babbles, 0 late collision, 0 deferred
0 lost carrier, 0 no carrier
0 output buffer failures, 0 output buffers swapped out
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