I reset my Cisco 1751-v4 router back to factory default using SDM2.2a (security device manager). Now I am unable to access the router (exec or global) and it hangs at rommon 1>..I recieve this error:PC = 0xfff0c1c4, Vector = 0x500, SP = 0x8000486cAt ...
Switching
Discuss Catalyst brand switches with peers and experts.
Turn on suggestions
Auto-suggest helps you quickly narrow down your search results by suggesting possible matches as you type.
Showing results for
- Cisco Community
- Technology and Support
- Networking
- Switching
Options
- Mark all as New
- Mark all as Read
- Float this item to the top
- Subscribe
- Bookmark
- Subscribe to RSS Feed
- Threaded format
- Linear Format
- Sort by Topic Start Date
Labels
-
2960X stack issue
(1) -
9200L Bundle Install Mode
(1) -
9300
(1) -
AAA
(7) -
Access Control Server (ACS)
(2) -
ACI
(2) -
ACI App Center
(1) -
AMP for Endpoints
(1) -
Announcements
(3) -
Application Networking
(1) -
Assurance and Policy
(1) -
Autres sujets de Commutation
(1) -
Autres sujets de Routage
(1) -
boot
(1) -
Branch Router
(765) -
Buying Recommendation
(338) -
BYOD
(1) -
C1000 cluster
(1) -
c3850
(1) -
c9200
(1) -
C9200-24P-E Support Contract
(1) -
C9500-16X
(1) -
Catalyst
(1) -
Catalyst 2000
(1,835) -
Catalyst 3000
(2,671) -
Catalyst 4000
(939) -
Catalyst 6000
(891) -
Catalyst 8000
(99) -
Catalyst 9000
(3,971) -
Catalyst 9000 Switches
(9) -
Catalyst Switch
(31) -
Cisco ACI
(3) -
Cisco Annual Internet Report
(1) -
Cisco Bugs
(26) -
Cisco Cafe
(93) -
Cisco Catalyst Center
(32) -
Cisco Digital Network Architecture-DNA
(3) -
Cisco DNA Assurance
(1) -
Cisco DNA Automation
(1) -
Cisco DNA Center
(2) -
Cisco Firepower Management Center (FMC)
(1) -
Cisco IE-2000(U) EIGRP vs EIGRP Stub
(1) -
Cisco ONE
(5) -
Cisco Press Cafe
(3) -
Cisco Software
(74) -
Cisco Spaces
(2) -
CISCO START ASEAN
(3) -
Cisco Start India
(5) -
Cisco SW
(1) -
Cisco User Groups
(1) -
Cisco.com Idea Center
(5) -
CiscoChat
(6) -
Cloud Networking
(2) -
Collaboration
(1) -
Collaboration Endpoints
(1) -
Collaboration Solutions
(5) -
Community Bug or Issue
(9) -
Community Feedback Forum
(130) -
Community Ideas
(59) -
Commutation
(2) -
Compliance and Posture
(1) -
Conferencing
(1) -
Configuration
(12) -
Contact Center
(1) -
CSC Content with No Valid Community to Post
(12) -
Data Center
(1) -
Data Center Networking
(3) -
Desk Endpoints
(1) -
Device Admin
(7) -
EEM Scripting
(5) -
Email Security
(2) -
etherchannel
(1) -
Firewalls
(1) -
General
(3) -
Guest
(1) -
Identity Services Engine
(1) -
Identity Services Engine (ISE)
(6) -
Industrial Switching
(1) -
Integrations
(1) -
Intent Based Networking
(1) -
iOS
(1) -
IOS issue
(1) -
IOS Version
(1) -
ios xe
(1) -
IP Phone and Accessories
(1) -
IP Phones and Accessories
(1) -
IPS and IDS
(1) -
IPv6 Configuration
(1) -
ISE
(1) -
ISR 4000 Series
(1) -
LAN
(9) -
LAN Switching
(20,221) -
LAN Switching and Routing
(1) -
License
(1) -
Meraki
(1) -
Meraki Switch
(171) -
Movilidad
(1) -
Multi-Domain
(1) -
Network Assurance
(1) -
Network Management
(109) -
Network Security
(1) -
network stich issue
(1) -
Networking
(4) -
New Document Idea
(3) -
Nexus
(1) -
Nexus 7000
(1) -
Nexus 9000
(1) -
Nexus Dashboard Insights
(1) -
Nexus Series Switches
(3) -
NGIPS
(1) -
NX-OS
(1) -
Online Chat Support
(2) -
Online Tools and Resources
(4) -
Optical Networking
(11) -
Other Cisco DNA
(3) -
Other Cisco.com Ideas
(1) -
Other Collaboration Applications
(8) -
Other Collaboration Endpoints
(3) -
Other Collaboration Topics
(18) -
Other Community Feedback
(9) -
Other Data Center Switches
(2) -
Other Data Center Topics
(1) -
Other Identity Services Engine (ISE)
(1) -
Other IP Telephony
(1) -
Other NAC
(3) -
Other Network
(22) -
Other Network Architecture
(1) -
Other Network Security Topics
(8) -
Other Networking
(26) -
Other NGFW Firewall Topics
(1) -
Other NGFW Firewalls Topics
(1) -
Other Policy-Access Topics
(2) -
Other Routers
(6) -
Other Routing
(10) -
Other Routing and Switching topics
(13) -
Other SD-WAN
(2) -
Other Security Topics
(3) -
Other Storage Networking
(1) -
Other Switches
(6,150) -
Other Switches Routing
(8) -
Other Switching
(75,008) -
Other Wireless - Mobility Subjects
(1) -
Other Wireless and Mobility Subjects
(7) -
Peripherals
(2) -
Physical Security
(2) -
Positive Feedback
(3) -
Primary boot loader issue
(1) -
Prioritization
(1) -
Remote Access
(1) -
Room Endpoints
(1) -
Routing
(172) -
Routing Protocols
(11) -
SD-Access
(4) -
SD-WAN
(1) -
Security
(2) -
Security Management
(5) -
Security Policy-Access
(2) -
Small Business Network and Smart Storage
(1) -
Small Business Routers
(2) -
Small Business Security
(1) -
Small Business Support Service
(1) -
Small Business Switches
(35) -
Small Business Wireless
(1) -
Smart Call Home
(1) -
smart net total care portal and collector
(1) -
Software Upgrades
(9) -
Storage Networking
(4) -
Support
(7) -
Switches
(20) -
Switching
(34) -
Switching or Switches
(3) -
Swtiches
(3) -
Technical Documentation
(11) -
Technical Documentation Ideas
(1) -
UCCE CTI Protocol
(1) -
UCS Networking and Storage
(2) -
UCS Solutions
(1) -
Unified Computing System (UCS)
(3) -
Update Document
(1) -
Voice Gateways
(1) -
VPN
(1) -
WAN
(404) -
Webex Meetings
(1) -
Wi-Fi 6
(72) -
Wired
(5) -
Wireless Controllers
(1) -
Wireless Network Management
(1) -
Wireless Security and Network Management
(2) -
XR OS and Platforms
(3) -
YANG Development Kit (YDK)
(1) -
ルータ一般 (IOS & IOS-XE)
(1)
- « Previous
- Next »
Forum Posts
Hi All,Quick question for you (actually 2)I have a 800 Router with 2 Ethernets 0 and 1.0 is my LAN and 1 is connected to ADSL.I use NAT. If int E1 obtains private IP from ADSL modem, then if i want to allow certain traffic to Local IP 10.0.0.2 and i ...
Hi Seniors, I need some info about secondary ip....like....in which circumstances is it being used.I am not looking for the config method...but some theory behind the evolution of sec.ip
Resolved! campus design
Hello all,I'm relative new in cisco networking and i need some clarifications on cisco hierarchical campus network design.1. Why do i have to use L3 switches on the core and distribution layers; A router implementing CEF doesn't performs switching in...
I posted up previously about this issue.I have a Cisco 2500 router and I'm trying to disable or bypass the password. I've learned that Break is disabled. I've been told you can jumper some pins on the circuit board. Can someone tell me what pins need...
newbielogged into web interface to change ip address from 192.x.x.x to 10.x.x.x. It works for a few minutes then reverts back to 192.x.x.x address. Cant telnet because there is no password set.not sure what to do,thanks
I have a couple of Cisco 871 routers (ethernet WAN, 4 port ethernet LAN) that I will be using as Internet gateways to an internal network and a perimeter network with web, ftp and other specialized servers.I've been reading through the documentation ...
Resolved! 3750 cross over cable
Hi I have two 3750G switches that I need to uplink to each other…I’m using a crossover cable but they won’t link any faster than 100 is it possible to get them to link at a 1000 with a crossover cable?
Dear Sirs, Which place does the memory consume for EIGRP routing?For instance, how many bytes a route do you consume?Best regards,
Resolved! Having problems with certain sites
Wasn't sure which forum to post this in...hope this one is appropriate.I have a PTP T1 between two locations with ADSL being fed through the T1.We recently got it going after getting the telco to fix some wire pair problems in the repeaters.However I...
hi, my remote sdm is now only working in a temporally flash and any change i make is not actually written to the config... how can i turn to the real editing mode?thanks.
I am relatively new to routing so please excuse what may seem like some dumb questions.I'm trying to get my hands around what happens with my Cisco 871 router when working with a /28 subnet of public IP addresses bridged by my ISP through a DSL route...
Currently at client site, client has a 1721 router but misplaced their cable. Bought a QVS CC439 DB-9 converter to access router. However, need pin loading layout. Does anyone know what it is? Thanks in advance! xposted
First off, I have learned I do not know as much about routers as I thought I did - and that wasn't much.My situation. We have a 1760 router with a T1 WIC and 4ESW which is not being used.We have a /29 subnet and 4 servers with public IPs and one ser...
I have all DHCP clients and server on same VLAN in the same subnet on CAT4507.I can also ping DHCP server, but the clients are not getting IPs. I've checked DHCP config on server seems to be OK. When I turn on debug I get following:1w3d: -----Additio...
Learn, share, save
Discover and save your favorite ideas. Come back to expert answers, step-by-step guides, recent topics, and more.
New here? Get started with these tips. How to use Community New member guide
Unanswered Topics
| Subject | Author | Posted |
|---|---|---|
| 09-03-2025 11:45 AM | ||
| 07-08-2025 11:44 PM | ||
| 07-04-2025 02:13 AM | ||
| 06-26-2025 10:05 AM | ||
| 06-16-2025 07:47 PM |
Top Solution Authors
| User | Count |
|---|---|
| 8 | |
| 7 | |
| 6 | |
| 5 | |
| 5 |
