不涉及
源:9.99.69.107 目的:9.99.70.86
流量经过这台6800设备,有不通的情况, 做了流统发现确实流量只有进的没有出的
从收集信息看,9.99.70.86 走网段路由9.99.70.64/26,但是defip没有这个网段的表项,正常情况下,一个entry可以存放两条defip表项
<DG-ZXAM-OC3-160G-A27-H6800-LA-06>dis fib 9.99.70.86
Destination count: 1 FIB entry count: 2
Flag:
U:Useable G:Gateway H:Host B:Blackhole D:Dynamic S:Static
R:Relay F:FRR
Destination/Mask Nexthop Flag OutInterface/Token Label
9.99.70.64/26 9.99.71.10 UGR RAGG1 Null
9.99.70.64/26 9.99.71.42 UGR RAGG2 Null
1537 0 9.99.69.64/26 00:00:00:00:00:00 100001 0 0 0 32 n
1537 1 121.12.115.64/26 00:00:00:00:00:00 100001 0 0 0 32 n
1538 0 9.99.68.192/26 00:00:00:00:00:00 200000 0 0 0 32 y (ECMP)
1538 0 9.99.69.0/26 00:00:00:00:00:00 200000 0 0 0 32 y (ECMP)
1539 0 9.99.69.192/26 00:00:00:00:00:00 200000 0 0 0 32 y (ECMP)
1539 0 9.99.69.128/26 00:00:00:00:00:00 200000 0 0 0 32 y (ECMP)
1540 0 9.99.68.0/26 00:00:00:00:00:00 200000 0 0 0 32 y (ECMP)
1540 0 9.99.68.64/26 00:00:00:00:00:00 200000 0 0 0 32 y (ECMP)
1541 0 9.99.68.128/26 00:00:00:00:00:00 200000 0 0 0 32 y (ECMP)
1541 0 9.99.70.0/26 00:00:00:00:00:00 200000 0 0 0 32 y (ECMP)
1542 0 9.99.69.64/26 00:00:00:00:00:00 100001 0 0 0 32 n
1793 0 192.168.5.0/24 00:00:00:00:00:00 100001 0 0 0 32 n
1793 0 192.168.105.0/24 00:00:00:00:00:00 100001 0 0 0 32 n
1794 0 192.168.103.0/24 00:00:00:00:00:00 200000 0 0 0 32 n (ECMP)
1794 0 192.168.3.0/24 00:00:00:00:00:00 200000 0 0 0 32 n (ECMP)
当前版本是2510p01,该版本存在parity error修复sdk会误删表项的已知问题,通过诊断可以看到l3defip表中,entry 1537和1542曾发生过parity error,但是现场设备的时间不是准确的,现场出问题大概多久了
===============display device===============
Slot Type State Subslot Soft Ver Patch Ver
1 S6800-54QT Master 0 2510P01 None
===============display clock===============
07:57:28 BeiJing Thu 02/20/2014
Time Zone : BeiJing add 08:00:00
Line 5233: %May 23 15:29:10:205 2013 DG-ZXAM-OC3-160G-A27-H6800-LA-06 DRVPLAT/4/Log Info: Slot 1,unit 0 L3_DEFIP entry 1537 parity error.
Line 5235: %May 23 15:29:10:205 2013 DG-ZXAM-OC3-160G-A27-H6800-LA-06 DRVPLAT/4/Log Info: Slot 1,unit 0 L3_DEFIP entry 1537 parity error. RECOVERED
Line 5309: %Jun 16 09:16:20:172 2013 DG-ZXAM-OC3-160G-A27-H6800-LA-06 DRVPLAT/4/Log Info: Slot 1,unit 0 L3_DEFIP entry 1542 parity error.
Line 5311: %Jun 16 09:16:20:172 2013 DG-ZXAM-OC3-160G-A27-H6800-LA-06 DRVPLAT/4/Log Info: Slot 1,unit 0 L3_DEFIP entry 1542 parity error. RECOVERED
从打印的defip表上下文中,推测9.99.70.64/26应该是存放在1542的位置,应该是9.99.70.64/26表项也就是entry 1542存放的ip_addr0发生了parity error,sdk修复时存在一定概率,导致这个表项被清空
可以下发一个长掩码明细路由规避或者重启,彻底解决的话需要升级版本
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