To Next Page

To Previous Page

Configuring PPP callback ············································································································································ 185

Configuring the callback client ·························································································································· 186

Configuring the callback server ························································································································· 187

Configuring ISDN caller number callback ················································································································ 188

Overview ······························································································································································ 188

Configuration restrictions and guidelines ········································································································· 189

Configuring a callback server by using traditional DDR ················································································· 189

Configuring a callback server by using bundle DDR ······················································································ 189

Configuring auto-dial ··················································································································································· 190

Configuring dynamic route backup through DDR ···································································································· 190

Creating a dynamic route backup group ········································································································· 191

Assigning a dialup interface to a dynamic route backup group ··································································· 191

Setting the delay for disconnecting a backup link ··························································································· 192

Setting the warm-up timer for dynamic route backup ······················································································ 192

Disconnecting a dialup link ········································································································································· 192

Displaying and maintaining DDR ······························································································································· 193

DDR configuration examples ······································································································································ 193

PSTN-based traditional DDR configuration example ······················································································· 193

PSTN-based bundle DDR configuration example ····························································································· 195

ISDN-based traditional DDR configuration example ······················································································· 199

ISDN-based bundle DDR configuration example ····························································································· 201

MP for DDR configuration example ··················································································································· 204

ISDN caller number callback configuration example ······················································································ 207

Router-to-router PPP callback configuration example ······················································································· 208

Router-to-PC PPP callback configuration example ···························································································· 211

NT server-to-router PPP callback configuration example ················································································· 213

Configuration example for circular dial string backup and Internet access ················································· 215

Dynamic route backup for traditional DDR configuration example ······························································· 221

Dynamic route backup for bundle DDR configuration example ····································································· 223

Configuration example for dynamic route backup for multiple networks ····················································· 226

Troubleshooting ···························································································································································· 228

Symptom 1: Failure to establish a dialup connection ····················································································· 228

Solution ································································································································································· 228

Symptom 2: Ping failure ····································································································································· 229

Configuring Frame Relay ········································································································································ 230

Frame Relay interface types ······························································································································· 230

Virtual circuit ························································································································································ 231

DLCI ······································································································································································ 231

Frame Relay address mapping ·························································································································· 232

LMI protocol ························································································································································· 232

Application scenarios ········································································································································· 234

Command and hardware compatibility ···················································································································· 235

Frame Relay configuration task list ····························································································································· 235

Configuring basic DTE-side Frame Relay ·················································································································· 236

Configuring basic DCE-side Frame Relay ················································································································· 237

Configuring local Frame Relay virtual circuits ·········································································································· 237

Configuration restrictions and guidelines ········································································································· 237

Configuration procedure ···································································································································· 238

Configuring Frame Relay address mapping ············································································································· 238

Configuring static address-to-DLCI maps ·········································································································· 238

Configuring dynamic address mapping ··········································································································· 239

Configuring Frame Relay subinterfaces ····················································································································· 239