Source: ../../rip/constants.hh
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// -*- c-basic-offset: 4; tab-width: 8; indent-tabs-mode: t -*-
// Copyright (c) 2001-2008 XORP, Inc.
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License, Version 2, June
// 1991 as published by the Free Software Foundation. Redistribution
// and/or modification of this program under the terms of any other
// version of the GNU General Public License is not permitted.
//
// This program is distributed in the hope that it will be useful, but
// WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. For more details,
// see the GNU General Public License, Version 2, a copy of which can be
// found in the XORP LICENSE.gpl file.
//
// XORP Inc, 2953 Bunker Hill Lane, Suite 204, Santa Clara, CA 95054, USA;
// http://xorp.net
// $XORP: xorp/rip/constants.hh,v 1.23 2008/10/02 21:58:16 bms Exp $
#ifndef __RIP_CONSTANTS_HH__
#define __RIP_CONSTANTS_HH__
#include "libxorp/ipv4.hh"
#include "libxorp/ipv4net.hh"
#include "libxorp/ipv6.hh"
#include "libxorp/ipv6net.hh"
static const uint32_t DEFAULT_UPDATE_INTERVAL = 30;
static const uint32_t DEFAULT_UPDATE_JITTER = 16;
static const uint32_t DEFAULT_EXPIRY_SECS = 180;
static const uint32_t DEFAULT_DELETION_SECS = 120;
static const uint32_t DEFAULT_TRIGGERED_UPDATE_DELAY = 3;
static const uint32_t DEFAULT_TRIGGERED_UPDATE_JITTER = 66;
static const uint32_t DEFAULT_TABLE_REQUEST_SECS = 1;
static const uint32_t RIPv2_ROUTES_PER_PACKET = 25;
/**
* The default delay between back to back RIP packets when an update
* is sent that spans more than 1 packet or there are multiple packets
* to be sent.
*/
static const uint32_t DEFAULT_INTERPACKET_DELAY_MS = 50;
/**
* The maximum delay between back to back RIP packets when an update
* is sent that spans more than 1 packet.
*/
static const uint32_t MAXIMUM_INTERPACKET_DELAY_MS = 250;
/**
* The default delay between accepting route request packets that
* query specific routes.
*/
static const uint32_t DEFAULT_INTERQUERY_GAP_MS = 250;
/**
* Protocol specified metric corresponding to an unreachable (or expired)
* host or network.
*/
static const uint32_t RIP_INFINITY = 16;
/**
* The maximum cost of a routing entry.
* Note that it must be larger than the protocol defined RIP_INFINITY.
*/
static const uint32_t RIP_MAX_COST = 0xffff;
/**
* Time-To-Live value that should be used for multicast packets.
*/
static const uint32_t RIP_TTL = 1;
/**
* Hop-Count value that should be used for multicast RIPng packets.
*/
static const uint32_t RIP_NG_HOP_COUNT = 255;
/**
* RIP IPv4 protocol port
*/
static const uint16_t RIP_PORT = 520;
/**
* RIPng protocol port
*/
static const uint16_t RIP_NG_PORT = 521;
static const IPv4Net IPv4_DEFAULT_ROUTE = IPv4Net(IPv4::ZERO(), 0);
static const IPv6Net IPv6_DEFAULT_ROUTE = IPv6Net(IPv6::ZERO(), 0);
/**
* Basis of specialized classes containing RIP constants.
*/
template <typename A>
struct RIP_AF_CONSTANTS;
template <>
struct RIP_AF_CONSTANTS<IPv4>
{
static const IPv4 IP_GROUP() { return IPv4::RIP2_ROUTERS(); }
static const uint16_t IP_PORT = RIP_PORT;
static const IPv4Net& DEFAULT_ROUTE() { return IPv4_DEFAULT_ROUTE; }
static const uint8_t PACKET_VERSION = 2;
};
template <>
struct RIP_AF_CONSTANTS<IPv6>
{
static const IPv6& IP_GROUP() { return IPv6::RIP2_ROUTERS(); }
static const uint16_t IP_PORT = RIP_NG_PORT;
static const IPv6Net& DEFAULT_ROUTE() { return IPv6_DEFAULT_ROUTE; }
static const uint8_t PACKET_VERSION = 1;
};
/**
* Enumeration of RIP Horizon types.
*/
enum RipHorizon {
// No filtering
NONE = 0,
// Don't a route origin its own routes.
SPLIT = 1,
// Show a route origin its own routes but with cost of infinity.
SPLIT_POISON_REVERSE = 2
};
inline static const char*
rip_horizon_name(RipHorizon h)
{
switch (h) {
case SPLIT_POISON_REVERSE:
return "split-horizon-poison-reverse";
case SPLIT:
return "split-horizon";
case NONE:
break;
}
return "none";
};
#endif // __RIP_CONSTANTS_HH__
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