FlexWan lost config and upgrade ROMMON for 65/76

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问题:

由于最近遇到了一个故障,重启后FlexWan的配置会丢失。
观察到的现象感觉是配置先刷,板卡随后重启,这样导致没有配置。
“copy start run” 可以暂时解决这个问题。
经过确认后这是一个软件BUG:CSCsq77835,需要升级ROMMON的版本才能完全解决。
ROMMON升级不是常事,所以接触的人不是很多,其实操作起来比较简单。
整理了详细的操作步骤,已作日后参考:
注:关于BUG的信息,可以去思科的BUG Toolkit上查询(需要CCO帐号)

解决:

1. Check the rp rommon version in active and standby engine:
—————————————————————————————

Router#sh ver | i ROM:
ROM: System Bootstrap, Version 12.2(17r)SX7, RELEASE SOFTWARE (fc1)
Router#remot command standby-rp show ver | i ROM:

2. Upload the rommon software to sup-bootdisk:
———————————————————————-

Router#sh sup-bootdisk:
-#- --length-- -----date/time------ path
1      669827 Jun 7 2010 14:49:08 +00:00 c6msfc3-rm2.srec.122-17r.S4

3. Check rp rommon status:
—————————————-

Router#sh rom-monitor slot 6 rp
Region F1: APPROVED, preferred
!---preferred是优选f1的意思
Region F2: APPROVED
Currently running ROMMON from F1 region
!---说明了现在的rommon是从f1 region里启动

4. Upgrade the rp rommon:
—————————————-

Router#upgrade rom-monitor slot 6 rp file sup-bootdisk:c6msfc3-rm2.srec.122-17r.S4
Router#
*Jun  7 14:54:26.379: ROMMON image upgrade in progress
*Jun  7 14:54:26.399: Erasing flash
*Jun  7 14:54:29.455: Programming flash
*Jun  7 14:54:31.399: Verifying new image
*Jun  7 14:54:31.579: ROMMON image upgrade complete
 The card must be reset for this to take effect

5. Check the rp rommon status again:
——————————————————

Router#sh rom-monitor slot 6 rp
Region F1: APPROVED
Region F2: FIRST_RUN, preferred
!---下次启动,从f2 region中启动rommon
Currently running ROMMON from F1 region
!---只有下次启动才改变

6. Wr and reload engine
!—注意在此bug中,必须完全重启一边,然后再重启进rommon操作下面的命令

7. Check the upgraded rommon version
———————————————————-

Router#sh rom-monitor slo 6 rp
Region F1: APPROVED
Region F2: APPROVED, preferred
Currently running ROMMON from F2 region
Router#
Router#
Router#sh ver | i ROM:
ROM: System Bootstrap, Version 12.2(17r)S4, RELEASE SOFTWARE (fc1)

8. Reload again and login into rp rommon
———————————————————–

00:00:06: %OIR-6-CONSOLE: Changing console ownership to route processor

System Bootstrap, Version 12.2(17r)S4, RELEASE SOFTWARE (fc1)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 2005 by cisco Systems, Inc.
Cat6k-Sup720/RP platform with 524288 Kbytes of main memory

rommon 1 >

9. Config follow command, please don’t change any command
—————————————————————————————–

rommon 1 > priv
You now have access to the full set of monitor commands.
Warning: some commands will allow you to destroy your
configuration and/or system images and could render
the machine unbootable.
rommon 2 >
rommon 2 > nvram_erase
Enter in hex the start address [0x0]:  0xbe020000
Enter in hex the test size or length in bytes [0x0]:  10000
rommon 3 >
rommon 4 > reset

参考文档:

Release Notes for Cisco 7600 Series Router Route Switch Processor 720 ROMMON
Release Notes for Supervisor Engine 720 Switch Processor ROMMON
Recovering a Catalyst 6500/6000 Running Cisco IOS System Software from a Corrupted or Missing Boot Loader Image or ROMmon Mode


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