H3C 的三层作为 DNS 的 proxy ,无法解析一些特定的域名,比如 home.console.aliyun.com
在三层上无法 ping 这个 ip ,但是直接向上游查询解析是 ok 的。
PC:
192.168.0.100/24,gatway=192.168.0.50,vlan=20,access
H3C 三层:
dns proxy enable
dns server 10.0.0.60
iKuai:
dig baidu.com
正常
dig @192.168.0.50 baidu.com
正常 via 三层
dig @10.0.0.50 baidu.com
正常 via 三层
dig @10.0.0.20 baidu.com
正常 via 爱快
dig @10.0.0.60 baidu.com
正常 via 爱快 VIP
dig home.console.aliyun.com
不正常
dig @192.168.0.50 home.console.aliyun.com
不正常 via 三层
dig @10.0.0.50 home.console.aliyun.com
不正常 via 三层
dig @10.0.0.20 home.console.aliyun.com
正常 via 爱快
dig @10.0.0.60 home.console.aliyun.com
正常 via 爱快 VIP
<H3C>ping baidu.com
Ping baidu.com (39.156.66.10): 56 data bytes, press CTRL_C to break
56 bytes from 39.156.66.10: icmp_seq=0 ttl=55 time=7.154 ms
56 bytes from 39.156.66.10: icmp_seq=1 ttl=55 time=6.585 ms
56 bytes from 39.156.66.10: icmp_seq=2 ttl=55 time=6.816 ms
56 bytes from 39.156.66.10: icmp_seq=3 ttl=55 time=6.693 ms
56 bytes from 39.156.66.10: icmp_seq=4 ttl=55 time=6.885 ms
--- Ping statistics for baidu.com ---
5 packet(s) transmitted, 5 packet(s) received, 0.0% packet loss
round-trip min/avg/max/std-dev = 6.585/6.827/7.154/0.193 ms
<H3C>ping home.console.aliyun.com
ping: Unknown host.
<H3C>ping www.aliyun.com
Ping www.aliyun.com (111.62.160.100): 56 data bytes, press CTRL_C to break
56 bytes from 111.62.160.100: icmp_seq=0 ttl=55 time=16.770 ms
56 bytes from 111.62.160.100: icmp_seq=1 ttl=55 time=16.701 ms
56 bytes from 111.62.160.100: icmp_seq=2 ttl=55 time=17.034 ms
56 bytes from 111.62.160.100: icmp_seq=3 ttl=55 time=16.447 ms
56 bytes from 111.62.160.100: icmp_seq=4 ttl=55 time=17.285 ms
--- Ping statistics for www.aliyun.com ---
5 packet(s) transmitted, 5 packet(s) received, 0.0% packet loss
round-trip min/avg/max/std-dev = 16.447/16.847/17.285/0.288 ms
root@port:/etc/nginx/sites-enabled# dig @10.0.0.60 home.console.aliyun.com
;; Warning: Client COOKIE mismatch
; <<>> DiG 9.18.12-0ubuntu0.22.04.3-Ubuntu <<>> @10.0.0.60 home.console.aliyun.com
; (1 server found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 3431
;; flags: qr rd ra; QUERY: 1, ANSWER: 6, AUTHORITY: 0, ADDITIONAL: 1
;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 1232
; COOKIE: 83b36405866ca8bc (bad)
;; QUESTION SECTION:
;home.console.aliyun.com. IN A
;; ANSWER SECTION:
home.console.aliyun.com. 37 IN CNAME one-console-adns.console.aliyun.com.
one-console-adns.console.aliyun.com. 37 IN CNAME one-console-adns.console.aliyun.com.gds.alibabadns.com.
one-console-adns.console.aliyun.com.gds.alibabadns.com. 37 IN CNAME sh.wagbridge.aliyun.aliyun.com.
sh.wagbridge.aliyun.aliyun.com. 37 IN CNAME aliyun-adns.aliyun.com.
aliyun-adns.aliyun.com. 37 IN CNAME aliyun-adns.aliyun.com.gds.alibabadns.com.
aliyun-adns.aliyun.com.gds.alibabadns.com. 37 IN A 140.205.135.3
;; Query time: 0 msec
;; SERVER: 10.0.0.60#53(10.0.0.60) (UDP)
;; WHEN: Tue Dec 05 22:20:59 CST 2023
;; MSG SIZE rcvd: 537
root@port:/etc/nginx/sites-enabled# dig @10.0.0.60 www.aliyun.com
; <<>> DiG 9.18.12-0ubuntu0.22.04.3-Ubuntu <<>> @10.0.0.60 www.aliyun.com
; (1 server found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 50166
;; flags: qr rd ra; QUERY: 1, ANSWER: 19, AUTHORITY: 0, ADDITIONAL: 1
;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
;; QUESTION SECTION:
;www.aliyun.com. IN A
;; ANSWER SECTION:
www.aliyun.com. 245 IN CNAME www-jp-de-intl-adns.aliyun.com.
www-jp-de-intl-adns.aliyun.com. 245 IN CNAME www-jp-de-intl-adns.aliyun.com.gds.alibabadns.com.
www-jp-de-intl-adns.aliyun.com.gds.alibabadns.com. 245 IN CNAME www.aliyun.com.w.cdngslb.com.
www.aliyun.com.w.cdngslb.com. 245 IN A 111.32.210.193
www.aliyun.com.w.cdngslb.com. 245 IN A 111.32.209.196
www.aliyun.com.w.cdngslb.com. 245 IN A 111.32.209.192
www.aliyun.com.w.cdngslb.com. 245 IN A 111.32.209.194
www.aliyun.com.w.cdngslb.com. 245 IN A 111.32.209.197
www.aliyun.com.w.cdngslb.com. 245 IN A 111.32.210.189
www.aliyun.com.w.cdngslb.com. 245 IN A 111.32.210.188
www.aliyun.com.w.cdngslb.com. 245 IN A 111.32.210.192
www.aliyun.com.w.cdngslb.com. 245 IN A 111.62.160.96
www.aliyun.com.w.cdngslb.com. 245 IN A 111.62.160.94
www.aliyun.com.w.cdngslb.com. 245 IN A 111.62.160.98
www.aliyun.com.w.cdngslb.com. 245 IN A 111.62.160.97
www.aliyun.com.w.cdngslb.com. 245 IN A 111.62.160.95
www.aliyun.com.w.cdngslb.com. 245 IN A 111.62.160.99
www.aliyun.com.w.cdngslb.com. 245 IN A 111.62.160.93
www.aliyun.com.w.cdngslb.com. 245 IN A 111.62.160.100
;; Query time: 0 msec
;; SERVER: 10.0.0.60#53(10.0.0.60) (UDP)
;; WHEN: Tue Dec 05 22:21:05 CST 2023
;; MSG SIZE rcvd: 989
这个版本有什么升级建议吗?
<H3C>dis version
H3C Comware Software, Version 7.1.070, Release 1312
Copyright (c) 2004-2019 New H3C Technologies Co., Ltd. All rights reserved.
H3C S5560-54QS-EI uptime is 14 weeks, 1 day, 13 hours, 10 minutes
Last reboot reason : Cold reboot
Boot image: flash:/s5560ei-cmw710-boot-r1312.bin
Boot image version: 7.1.070, Release 1312
Compiled Nov 19 2019 11:00:00
System image: flash:/s5560ei-cmw710-system-r1312.bin
System image version: 7.1.070, Release 1312
Compiled Nov 19 2019 11:00:00
Slot 1:
Uptime is 14 weeks,1 day,13 hours,10 minutes
S5560-54QS-EI with 2 Processor
BOARD TYPE: S5560-54QS-EI
DRAM: 1984M bytes
FLASH: 512M bytes
PCB 1 Version: VER.B
Bootrom Version: 128
CPLD 1 Version: 003
Release Version: H3C S5560-54QS-EI-1312
Patch Version : None
Reboot Cause : ColdReboot
[SubSlot 0] 48GE+4SFP Plus+2QSFP Plus
在官网看了下:
H3C S5560-EI系列以太网交换机
H3C S5560EI-CMW710-R3507P10 版本软件及说明书 40 | 加密软件与手册等级下载
H3C S5560EI-CMW710-R3507P08 版本软件及说明书 40 | 加密软件与手册等级下载
H3C S5560EI-CWM710-R3507P06版本软件及说明书 40 | 加密软件与手册等级下载
H3C S5560EI-CMW710-R3507P02 版本软件及说明书 40 | 加密软件与手册等级下载
H3C S5560EI-CMW710-R3507 版本软件及说明书 40 | 加密软件与手册等级下载
H3C S5560EI-CMW710-R3506P12 版本软件及说明书 40 | 加密软件与手册等级下载
H3C S5560EI-CMW710-R3506P10 版本软件及说明书 40 | 加密软件与手册等级下载
H3C S5560EI-CMW710-R3506P07 版本软件及说明书 40 | 加密软件与手册等级下载
H3C S5560EI-CMW710-R3506P02 版本软件及说明书 40 | 加密软件与手册等级下载
H3C S5560EI-CMW710-R3506 版本软件及说明书 40 | 加密软件与手册等级下载
感觉高我好多
1
mohumohu 346 天前
1 、直接找 h3c 技术支持
2 、“既然三层负责 dhcp ,理论上下发的 dns 地址也是三层的 vlanip 为好” 似乎也没什么特别的好处 |
3
datocp 346 天前 via Android
用的华为的 s5720s li ,dhcp 是由 openwrt 分配的,那才叫真爽。。。
|
4
a8Fy37XzWf70G0yW 345 天前
這就是 H3C 的老 bug 了,我曾經接觸過的一臺 H3C S10500 系列的交換機也這樣,所以還是嘗試升級固件吧。
這個問題是的確如你所說是 DNS PACKET 無法解析過長報文導致的。 |